| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Magneto-optic study of chromium doped Bi12SiO20, P. Petkova, P. Vasilev and I. Ismail // Journal Scientific and Applied Research, Vol. 9, 2016, pp. 78-83 | 25.11.2016 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Книги | Modern Technologies for Creating the Thin-film Systems and Coatings, P. Petkova and other authors, Edited by Nikolay Nikitenkov, ISBN: 978-953-51-5056-5, Intech, Book Citation Index in Thomson Reuters and Web of Science Core Collection | 24.11.2016 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Acoustics properties of anisotropic Bi12SiO20:Fe, P. Vasilev, P. Petkova, G. Alexieva, B. Bedzhev, Youri Tzoukrovsky // Optik, Vol. 130, pp. 184-188, 2017 | 24.11.2016 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Phonon spectra of eulytite crystals Bi4M3O12 (M = Ge, Si) : ab initio study, N.M. Avram, V.A. Chernyshev, E.L. Andreici, V.P. Petrov, P. Petkova // Optical Materials, Vol. 61, pp. 30-36, 2016 | 24.11.2016 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Microstructural and optical properties of SnO2-ZnSnO3 ceramics, I. Saafi, R. Dridi, R. Mimouni, A. Amlouk, A. Yumak, K. Boubaker, P. Petkova, M. Amlouk // Ceramics International 42, pp. 6273-6281, 2016 | 13.09.2016 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Effect of Europium content on physical properties of In2O3 thin films for sensitivity and optoelectronic applications, O. Kamoun, A. Boukhachem, C. Mrabet, A. Yumak, P. Petkova, K. Boubaker, M. Amlouk // Bulletin of Materials Science 39, pp. 777-788, 2016 | 09.08.2016 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Marketing Communication of the Sign, P. Petkova, T. Dimitrova // Proceedings in QUAESTI 2015, pp. 97-101 | 08.08.2016 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Infrared Spectroscopy of Undoped and Cu-doped (80-x)Sb2O3-20Li2O-xMoO3 Glasses, P. Petkova, K. Boubaker, P. Vasilev, M. Mustafa, A. Yumak, H. Touihri and M.T. Soltani // AIP Conference Proceedings 1727 (APMAS15), pp. 020017-1-9, 2016 | 08.08.2016 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Anisotropic magneto-optical properties of vanadium in Bi4Ge3O12, P. Petkova // Journal of Magnetism and Magnetic Materials 410, pp. 5-9, 2016 | 08.08.2016 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Doping-induced stability in vanadium-doped ZnO quantum well wires (QWW):Combination of DFT calculations within experimental measurements, A. Yumak, S. Goumri-Said, W. Khan, K. Boubaker, P. Petkova // Solid State Sciences 57, pp. 33-37, 2016 | 08.08.2016 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Magneto-optical properties of Bi12SiO20:Ni, P. Petkova, P. Vasilev // Optik 127, pp. 9076-9080, 2016 | 08.08.2016 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Common and different doping patterns within photo-reactive complex of Co2+ in Bi12SiO20 and Co3+ in Bi12TiO20, P. Petkova, K. Boubaker, P. Vasilev, M. Mustafa, A. Yumak, D. Bachvarova // Optik, Vol. 127, pp. 3925-3928, 2016 | 11.02.2016 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Spiritual Format of the Product, T. Dimitrova, P. Petkova // Proceedings of 12th International Prof. Vladas Gronskas Young Reserchers Scientific Conference "Development in Economics : Theory and Practice", Kaunas : VU KHF, December 2015 - in press | 04.01.2016 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Energy levels scheme simulation of divalent cobalt doped bismuth germinate, E. – L. Andreici, P. Petkova, N.M. Avram // AIP Conference Proceedings, Vol. 1694, pp. 030007 – 1 - 030007 – 4, 2015 | 28.12.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Optical, Physical, Chemical and Electrical Properties of Nickel Oxide Sprayed Thin Films under Tin Doping Effects, M. Ben Amor, N. Hamzaoui, A. Boukhachem, C. Mrabet, M. Ghamnia, A. Yumak, K. Boubaker, P. Petkova, M. Amlouk // Advances in Ceramic Science and Engineering, Vol. 4, pp. 19-41, 2015 | 23.12.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Europium incorporation dynamics and some physical investigations within ZnO sprayed thin films, O. Kamoun, A. Boukhachem, A. Yumak, P. Petkova, K. Boubaker, M. Amlouk // Materials Science in Semiconductor Processing 43, pp. 8-16, 2016 | 09.12.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Performance of Eu-doped oxide films for advanced materials engineering and energy conversion:arguments for the lattice compatibility theory (LCT), A. Yumak, K. Boubaker, A. Colantoni, P. Petkova, D. Monarca, M. Cecchini, L. longo // Journal of Materials Sciences and Engineering with Advanced Technology, pp. 1-13, 2016 | 09.12.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | Stability and morphology-dependence of Sc3+ ions incorporation and substitution kinetics within ZnO host lattice, A. Yumak, G. Turgut, O. Kamoun, H. Ozisik, E. Deligoz, P. Petkova, R. Mimouni, K. Boubaker, M. Amlouk, S.G. Said // Mater. Sci. Semicond. Process. 39, pp. 103-111, 2015 Effects of lanthanum and sodium on the structural, optical and hydrophilic properties of sol-gel derived ZnO films:A comparative study, M. Shaban, A.M. El Sayed // Materials Science in Semiconductor Processing 41, pp. 323-334, 2016 | 09.12.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Near-infrared dispersion and spin-orbit interaction of Co doped (80-x)Sb2O3-20Na2O-xWO3, P. Petkova, P. Vasilev, M. Mustafa, I. Parushev and M.T. Soltani // Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, vol. 152, 2016, pp. 475-479 | 27.11.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Europium doping-induced stability and quantum confinement effect in ZnO quantum well wires QWW: Electronic Structure calculation and material structural investigation in terms of band-gap shift, A. Yumak, U. Yahsi, P. Petkova, K. Boubaker // Materials Letters 43, 2016, pp.8-16 | 27.11.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | Stability and morphology-dependence of Sc3+ ions incorporation and substitution kinetics within ZnO host lattice, A. Yumak, G. Turgut, O. Kamoun, H. Ozisik, E. Deligoz, P. Petkova, R. Mimouni, K. Boubaker, M. Amlouk, S.G. Said // Mater. Sci. Semicond. Process. 39, 2015, pp. 103-111 Effects of lanthanum and sodium on the structural, optical and hydrophilic properties of sol-gel derived ZnO films: A comparative study, M. Shaban, A.M. El Sayed // Materials Science in Semiconductor Processing 41, 2016, pp. 323-334 | 24.11.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Physical Capability and Coordination of Students in Grades 5 - 8, T. Simeonova, P. Petkova, N. Yordanova, Yanko Yankov, P. Vasilev, M. Mustafa, D. Bachvarova, 9th International Balkan Education and Science Congress Proceedings, 2015, pp. 716 – 720 | 24.11.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Optical properties of LiNbO3:Ru in the Ultraviolet spectral region, P. Petkova, P. Vasilev, G. Nedelcheva // Acta Scientifica Naturalis, Vol. 1, pp. 38-44, 2014, SJIF:2,723 | 24.11.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Absorption structure of Rh4+ in doped Bi12TiO20, P. Petkova and K. Boubaker // Acta Scientifica Naturalis, Vol. 2, 2015, pp. 87-92, SJIF:2,723 | 24.11.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | 3d electron transitions in Co- and Ni-doped MgSO3.6H2O, P. Petkova, Zh. Bunzarov, I. Iliev, T. Dimov and Y. Tzoukrovsky // Physica Scripta, T149, 014062, 2012 Spin-Forbidden Transitions in the Spectra of Transition Metal Ions and Nephelauxetic Effect, M.G. Brik, S.J. Camardello, A.M. Srivastava, N.M. Avram and A. Suchocki // ECS Journal of Solid State Science and Technology 5(1) R3067 - R3077, 2016 | 23.11.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2015_695: Determination of radiation shielding properties of cotton polyester blend fabric coated with different barite rate, AIP Conference Proceedings (APMAS 2015) | 23.11.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Доклади | Mazers theory application in Bi4Ge3O12:V, P. Petkova, P. Vasilev, R. Belcheva // XIII National Conference "Natural Sciences 2015" (NCNS 2015), 25 - 27.09. 2015 г., гр. Варна | 13.11.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | Effect of Mn content on structural, optical, opto-thermal and electrical properties of ZnO:Mn sprayed thin film compounds, R. Mimouni, O. Kamoun, A. Yumak, A. Mhamdi, K. Boubaker, P. Petkova, M. Amlouk // Journal of Alloys and Compounds 645, 2015, pp. 100-111 Metal-organo-zinc oxide materials: Investigation on the structural, optical and electrical properties, N. Bouazizi, F. Ajala, A. Bettaibi, M. Khelil, A. Benghnia, R. Bargougui, S. Louhichi, L. Labiadh, R. Ben Slama, B. Chaouachi, K.K. Khirouni, A. Houas, A. Azzouz // Journal of Alloys and Compounds 656, 2016, pp. 146-153 | 13.11.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | Effect of Mn content on structural, optical, opto-thermal and electrical properties of ZnO:Mn sprayed thin film compounds, R. Mimouni, O. Kamoun, A. Yumak, A. Mhamdi, K. Boubaker, P. Petkova, M. Amlouk // Journal of Alloys and Compounds 645, 2015, pp. 100-111 Fabrication and characterization of optical and electrical properties of Al-Ti-Co-doped ZnO nano-structured thin film, A. Davoodi, M. Tajally, O. Mirzaee, A. Eshaghi // Journal of Alloys and Compounds 657, 2016, pp. 296-301 | 13.11.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Growth of first ever macrocrystals of MgSO3.6H2O – representative of rare crystallographic C3 class, Zh. Bunzarov, Tz. Kovachev, T. Dimov, I. Iliev, P. Petkova, L. Lyutov, Y. Tzoukrovsky // National Crystallographic Symposium – Proceedings, pp. 21-22, 2009 | 05.11.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2015_12914: Polytype Stabilization of High-purity Semi-insulating 4H-SiC Crystal via the PVT Method, Materials Science (MEDZIAGOTURA), 2015 | 05.11.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | An attempt to give exact solitary and periodic wave polynomial solutions to the nonlinear Klein-Gordon-Shrodinger equations, A. Yumak, K. Boubaker, P. Petkova // Journal "Chaos Solitons & Fractals”, Elsevier, Volume 81PA, pp. 299-302, 2015 | 03.11.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | MC-D-15-01235: Structural and Spectroscopic studies on composition dependent Sm3+ ions doped Bismuth sodiumfluoroborate glasses, Journal of Molecular Structure, Elsevier, 2015 | 30.09.2015 |
| Доц. д-р Петя Николаева Петкова | В сборник | Доклади | Кобалтови йони в структурата на MSO3 и [M(H2O)6]2+ (M = Co2+), П. Петкова, Г. Неделчева, П. Василев, М. Мустафа, В. Недков, Й. Тачева // II Студентска научна конференция "От атома до космоса", стр. 53-56, 2014 | 30.09.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Доклади | Impact of the Sign on the Optical Properties of а Product, T. Dimitrova, P. Petkova, D. Bachvarova, V. Lalova // II International Turkish Congress on Molecular Spectroscopy, September 13-18, 2015, Antalya, Turkey | 30.09.2015 |
| Доц. д-р Петя Николаева Петкова | В сборник | Доклади | Fibonacci superlattice in the aqueous solution of Co(NO3)2(H2O)6, G. Nedelcheva, P. Petkova // III Студентска научна конференция "От атома до космоса" с участие на ученици, 15-16 май 2015 г., pp. 73-76 | 21.09.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Цитирания | Effect of Mn content on structural, optical, opto-thermal and electrical properties of ZnO:Mn sprayed thin films compounds // R. Mimouni, O.Kamoun, A. Yumak, A. Mhamdi, K. Boubaker, P. Petkova, M. Amlouk // JALCOM, vol. 645, 2015, pp. 100-111 Structural, Surface Morphology and Optical Properties of Pulsed Laser Deposited ZnO Thin Films at Various Laser Pulse Energies, Ying Huang, Jia Yuan Qin, Xiao Ming Shen, Nguyen Manhtai, Yue Chun Fu, Huan He, Shu Long Lu and Li Feng Bian, 3rd International Conference on Material, Mechanical and Manufacturing Engineering (IC3ME 2015) | 08.09.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Effect of Mn content on structural, optical, opto-thermal and electrical properties of ZnO:Mn sprayed thin films compounds // R. Mimouni, O.Kamoun, A. Yumak, A. Mhamdi, K. Boubaker, P. Petkova, M. Amlouk // JALCOM, vol. 645, 2015, pp. 100-111 | 08.09.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | Influence of W5+ ions on the optical properties of doped Bi12TiO20, P. Petkova, Optical Materials, vol. 37, pp. 160-164, 2014 First-principles study of the phonon modes in bismuth sillenites, D.J. Arenas, C Middleton, A.F. Kemper, Physical Review B, 2015, IF: 3,736 | 08.09.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | Urbachs rule of Bi4Ge3O12 doped with 3d and 4d ions // Optical Materials, Vol. 34, issue 1, pp. 265 - 268, 2011, (P. Petkova) Optical and morphological investigation of aluminium and nickel oxide composite films deposited by spray pyrolysis method as a basis of solar thermal absorber, A BAGHERI KHATIBANI and S M ROZATI, Bull. Mater. Sci., Vol. 38, No. 2, April 2015, pp. 319–326, IF: 1,017. | 08.09.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Доклади | The Lorentz oscillator model and covalent bonds of aqueous solutions, P. Petkova, D. Bachvarova, P. Vasilev // The 4th International Conference on the Physics of Optical Materials and Devices (ICOM 2015), 31st August - 4th September 2015, Budva, Montenegro | 06.09.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Доклади | Phonon spectra of eulytite crystals Bi4M3O12 (M = Ge, Si):ab initio study, N.M. Avram, V.A. Chernyshev, E. L. Andreici, V.P. Petrov, P. Petkova // The 4th International Conference on the Physics of Optical Materials and Devices (ICOM 2015), 31st August - 4th September 2015, Budva, Montenegro | 06.09.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Доклади | Quantum mechanical transmission with absorption of ZnO thin films, P. Petkova, D. Bachvarova, P. Vasilev, K. Boubaker, R. Mimouni // The 4th International Conference on the Physics of Optical Materials and Devices (ICOM 2015), 31st August - 4th September 2015, Budva, Montenegro | 06.09.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Доклади | Optical activity theory for the oxygen tetrahedra in doped Bi12TiO20, P. Petkova, P. Vasilev, M. Mustafa, D. Bachvarova // V International School and Conference on Photonics (PHOTONICA 2015), 24 - 28 August 2015, Belgrade, Serbia | 06.09.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Доклади | Fibonacci superlattice in the aqueous solution of Co(NO3)2(H2O)6, P. Petkova, G. Nedelcheva, M. Mustafa, D. Bachvarova // V International School and Conference on Photonics (PHOTONICA 2015), 24 - 28 August 2015, Belgrade, Serbia | 06.09.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Vanadium States in Doped Bi12SiO20, P. Petkova, P. Vasilev, M. Mustafa and I. Parushev // Materials Science (MEDZIAGOTURA), vol. 21, N 2, 2015, pp. 167-172 | 10.08.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Доклади | Quantum Mechanical Transmission with Absorption of Co(NO3)2(H2O)6 and Ni(NO3)2(H2O)6, P. Petkova, P. Vasilev, M. Mustafa and D. Bachvarova // The 8th International Conference on Advanced Materials (ROCAM 2015), 7-10 July 2015, Bucharest, Romania | 21.07.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Доклади | Common and different doping patterns within complexes of Co2+ in Bi12SIO20 and Co3+ in Bi12TiO20, P. Petkova, K. Boubaker, P. Vasilev, M. Mustafa, D. Bachvarova and A. Yumak // The 8th International Conference on Advanced Materials (ROCAM 2015), 7-10 July 2015, Bucharest, Romania | 21.07.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Доклади | Paramagnetic properties of anisotropic MgSO3.6H2O:Co, Youri Tzoukrovsky, P. Petkova, D. Bachvarova // Third International Conference on Advanced Complex Inorganic Nanomaterials (ACIN 2015), 13 - 17 July 2015, Namur, Belgium | 20.07.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Доклади | Single oscillator model of undoped and co-doped ZnO thin films, P. Petkova, L. Nedelchev, D. Nasarova, K. Boubaker, R. Mimouni and D. Bachvarova // Third International Conference on Advanced Complex Inorganic Nanomaterials (ACIN 2015), 13 - 17 July 2015, Namur, Belgium | 20.07.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Molecular structure stability of Short-Chain Chlorinated Paraffins : Evidence from Lattice Compatibility and Simha-Somcynsky Theories, A. Yumak, K. Boubaker, P. Petkova, U. Yahsi // Journal of Molecular Structure, vol. 1098, 2015, pp. 255 - 260 | 04.07.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2015_MSEC1753: Measurement of Retardation of Wide-viewing-angle Quarter Wave Plate, Maney Publishing, 2015 | 28.06.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2015_MSEC1155: Geometric and Electronic Structures of Bulk CuFeS2: A Density Functional Study, Maney Publishing, 2015 | 28.06.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2015_MSEC1444: First-principle study on optical properties of C-Si-codoped anatase TiO2, Materials Research Innovations, Maney Publishing, 2015 | 28.06.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | MC:15/4575: Chemiluminescence (CL) has been detected during solid-phase XeF2 decomposition on SiO2 surface, where Xe, Xe+ and singlet oxygen act as CL emitters, Mendeleev Communications, Elsevier, 2015 | 28.06.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Optical Spectra of the complexes [M(H2O)6]2+ and MSO3 - (H2O)2 (M = Ni2+) // P. Petkova, P. Vasilev, M. Mustafa, V. Nedkov, J. Tacheva and Y. Tzoukrovsky // Bulgarian Chemical Communications, vol. 42, 2015, pp. 1 - 5 | 26.06.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Physical Capability and Coordination of Students in grades 5 - 8, T. Simeonova, P. Petkova, N. Yordanova, Ya. Yankov, P. Vasilev, M. Mustafa and D. Bachvarova // 9th International Balkan Education and Science Congress Proceedings, 2015, pp. 716 – 720 | 12.06.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Application of Physics in Volleyball, P. Petkova, T. Simeonova, P. Vasilev, M. Mustafa, D. Bachvarova, N. Yordanova and Ya. Yankov // 9th International Balkan Education and Science Congress Proceedings, 2014, pp. 662 – 664 | 12.06.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Electrosynthesis and study of some physical properties of conductive and solid-state gas sensing polydiphenylamine, A. Boukhachem, A. Yumak, S. Krichen, A. Madani, M. Abderrabba, P. Petkova, K. Boubaker, M. Amlouk, H. Bouchriha // Sensors and Actuators A: Physical, vol. 227, 2015, pp. 11 - 20 | 04.06.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Stability and morphology-dependence of Sc3+ ions incorporation and substitution kinetics within ZnO host lattice, A. Yumak, G. Turgut, O. Kamoun, H. Ozisik, E. Deligoz, P. Petkova, R. Mimouni, K. Boubaker, M. Amlouk, S. Goumri-Said // Materials Science in Semiconductor Processing, vol. 39, 2015, pp. 103 - 111 | 04.06.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Fermi energy and Urbach’s rule of Ni doped Mn3O4 thin films, P. Petkova, K. Boubaker, P. Vasilev, M. Mustafa, T. Larbi // Bulgarian Chemical Communications, vol. 47, 2015, pp. 431 - 435 | 04.06.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2015_TNANO-00179:Proposal of a multi-state memory using voltage controlled magnetic anisotropy of a cross-shaped ferromagnet, IEEE Transactions on Nanotechnology, 2015 | 04.06.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2015_9624: Optical and Electrical Performance of ZnO Films Textured by Chemical Etching, Materials Science (MEDZIAGOTURA), 2015 | 04.06.2015 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Доклади | Spiritual form of the product, P. Petkova and T. Dimitrova // 5th International Advances in Applied Physics and Materials Science Congress & Exhibition (APMAS 2015), 16 - 19 April 2015, Oludeniz (Mugla), Turkey | 20.04.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Доклади | Infrared spectroscopy of undoped and Cu doped (80-x)Sb2O3-20Li2O-xMoO3 glasses, P. Petkova, K. Boubaker, P. Vasilev, M. Mustafa, A. Yumak, H. Touihri and M.T. Soltani // 5th International Advances in Applied Physics and Materials Science Congress & Exhibition (APMAS 2015), 16 - 19 April 2015, Oludeniz (Mugla), Turkey | 20.04.2015 |
| Доц. д-р Петя Николаева Петкова | Известие | Доклади | Quantum Mechanical Transmission with Absorption of ZnO thin films, P. Petkova, D. Bachvarova, P. Vasilev, K. Boubaker and R. Mimouni, Interdisciplinary Surface Science Conference (ISSC-20), 30 March - 2 April 2015, University of Birmingham, Birmingham, UK | 07.04.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Aqueous solutions of MgSO3.6H2O:M (M = Co or Co+Ni) and nonlinear optics, P. Petkova, M. Mustafa, P. Vasilev, V. Nedkov, J. Tacheva and Y. Tzukrovski, Proc. SPIE, Vol. 9447, 2015, pp. 1 - 6 | 06.04.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Refractive index calculation of doped Bi4Ge3O12 and Bi12SiO20, P. Petkova and D. Bachvarova // Proceedings in QUAESTI, 2015, pp. 434 – 438 | 06.04.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Levels of Consumer Value of the Product Clay, T. Dimitrova and P. Petkova // Proceedings in QUAESTI, 2015, pp. 91 – 95 | 06.04.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Application of Physics in Volleyball, P. Petkova, T. Simeonova, P. Vasilev, M. Mustafa, D. Bachvarova, N. Yordanova and Ya. Yankov, 9th International Balkan Education and Science Congress Proceedings, 2015, pp. 662 – 664 | 06.04.2015 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Electron Transitions in Cr2+ in the Aqueous Solutions of MgSO3.6H2O, P. Petkova, V. Nedkov, J. Tacheva, P. Vasilev, I. Ismailov, M. Mustafa and Y. Tzukrovski // IOP Conference Proceedings, 2014 Journal of Physics, Conference series, 558, 012029, pp. 1-4, 2014 | 12.12.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Цитирания | Calculation of the Einstein coefficiens for Co doped (80-x)Sb2O3-20Na2O-xWO3 (x% mol of WO3) glasses, P. Petkova and P. Vasilev // Journal Scientific and Applied Research, vol. 5, pp. 154-161, 2014 Thermoluminescence properties of hausmannite Mn3O4 thin films induced by UV light, H. Hristov, R. Mateva, N. Arhangelova, V. Velev, Y. Baneva, K. Boubaker, T. Larbi, G. Moschini and N.M. Uzunov // IOP Conference Proceedings, 558, 012034, pp. 1-6, 2014 | 12.12.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2014_4725: Manganese Modified Structural and Optical Properties of Bismuth Silicate Glasses, Journal of Molecular Structure, Elsevier, 2014 | 12.12.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Доклади | Urbach’s Rule Region of Al3+ and P5+ in the Single and Double Doped Bi12TiO20, P. Petkova, P. Vasilev, M. Mustafa and I. Parushev, 2nd Annual International Conference on Chemistry, 2nd Annual International Conference on Physics, 21-24 July 2014, (ATINER 2014), Athens, Greece | 01.12.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2014: Characters of graphenes symmetry group Dg80, Physica Scripta, T162, 014022, pp. 1-4, 2014 | 01.12.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Crystal Field Parameters and Energy Levels Scheme of Trivalent Chromium Doped BSO, P. Petkova, E.L. Andreici, N.M. Avram, IOP Conference Proceedings 1634, pp. 120-124, 2014 | 01.12.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Spin-orbit interaction in aqueous and alcoholic solutions of FeCl3.6H2O, P. Petkova, P. Vasilev, M. Mustafa, V. Nedkov and J. Tacheva, Science, Education, Innovation, vol. 2, pp. 114-120, 2014 | 01.12.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Shrodinger equation and Co oxygen complexes, P. Petkova, M. Dimitrova, P. Vasilev and M. Mustafa, Science, Education, Innovation, vol. 2, pp. 121-127, 2014 | 01.12.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | The behavior of Ni2+ cations in the aqueous and alcoholic solutions of NiCl2.6H2O, P. Petkova, V. Nedkov, P. Vasilev and I. Ismailov // Physica Scripta, T162, 014029, pp. 1-3, 2014 | 01.12.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Visible absorption structure of chromium doped (80-x)Sb2O3-20K2O-xPbO glasses, P. Petkova, A. Ghamri, I. Ismailov and M.T. Soltani // Physica Scripta, T162, 014028, pp. 1-4, 2014 | 01.12.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Цитирания | Tetrahedral and octahedral complexes of Mn2+ in the aqueous solutions of MnCl2.4H2O // Journal Scientific and Applied Research, Vol. 3, pp. 78-83, 2013, (P. Petkova, V. Nedkov, J. Tacheva, P. Vasilev, D. Hristov, G. Nedelcheva, I. Dimitrov, A. Ivanov and I. Ahmed) Modeling of the influence of the thermomechanical modification parameters on the structural changes in polyester fibers, V. Velev, V. Grozev, A. Popov, R. Androsh, T. Dimov, L. Veleva, H. – J. Radush // Journal Scientific and Applied Research, vol. 5, pp. 173-180, 2014 | 12.11.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Цитирания | Tetrahedral complex of Cr3+ and Cr4+ ions in Bi12SiO20 // Journal Scientific and Applied Research, Vol. 2, pp. 58-65, 2012, (P. Petkova) Modeling of the influence of the thermomechanical modification parameters on the structural changes in polyester fibers, V. Velev, V. Grozev, A. Popov, R. Androsh, T. Dimov, L. Veleva, H. – J. Radush // Journal Scientific and Applied Research, vol. 5, pp. 173-180, 2014 | 12.11.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | MC:14/4411: Phosphorescence of the ruthenium(II) hydride-carbonyl complex with 3-hydroxy-2-quinoxaline carboxylic acid as co-ligand, Mendeleev Communications, Elsevier, 2014 | 12.11.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | The lattice compatibility theory (LCT): an attempt to explain Urbach tailing patterns in coper-doped bismuth sillenites (BSO) and germinates (BGO), P. Petkova, K. Boubaker, J. Alloys Compd. 546 (2013) 176-179. Thickness effect on the structural and optical constants of stibnite thin films prepared by sulfidation annealing of antimony films, M. Haj Lakhdar, B. Ouni, M. Amlouk, Optik - International Journal for Light and Electron Optics (IF: 0.77), 05/2014 | 12.11.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Influence of W5+ ions on the optical properties of doped Bi12TiO20, P. Petkova, Optical Materials, vol. 37, pp. 160-164, 2014 | 12.11.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | The basketball game and the physical experiment, D. Bachvarova, P. Petkova, T. Simeonova, P. Vasilev, M. Mustafa // Congress Proceedings – sport, stress, adaptation, scientific journal, extra issue, pp. 935-937 | 12.11.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | The Lattice Compatibility Theory (LCT): An attempt to explain Urbach tailing patterns in copper-doped bismuth sillenites (BSO) and germanates (BGO) // Journal of Alloys and Compounds, Vol. 546, pp. 176-179, 2013, (P. Petkova and K. Boubaker) | 12.11.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2014_MSE1500: Factorial design applied to investigate the effect of vanadium and temperature on nitrogen solubility in Fe-Cr-Ni-Mn system, Materials Research Innovations, Maney Publishing, 2014 | 21.10.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2014_MSE1352: Prediction and Control of the Bi-stable FGM Composites by Temperature Gradient Field, Materials Research Innovations, Maney Publishing, 2014 | 21.10.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2014_4574: Structural and Luminescence behaviour of Er3+ doped Telluro-fluoroborate glasses, Journal of Molecular Structure, 2014 | 20.10.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Calculation of the Einstein coefficiens for Co doped (80-x)Sb2O3-20Na2O-xWO3 (x% mol of WO3) glasses, P. Petkova and P. Vasilev // Journal Scientific and Applied Research, vol. 5, pp. 154-161, 2014 | 02.10.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Al3+ acceptors and the optical properties of Bi12SiO20:Cr+Al, P. Petkova and P. Vasilev // Journal Scientific and Applied Research, vol. 5, pp. 146-153, 2014 | 02.10.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Статии | Linear dichroism in optical spectra of Co-ions in CdS // Optical Materials 32, pp. 909-912, 2010, (P.N. Petkova, T.N. Dimov, I.A. Iliev) | 08.09.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Faraday effect and lambda-modulation absorption spectra of GaP // Journal of Physics:Conference Series 92, 002069 pp. 1-4, 2007, (P.N. Petkova, T.N. Dimov and I.A. Iliev) | 08.09.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF2014_4320: Dy3+ - doped tellurite based tungstate-zirconium glasses: Spectroscopic study, Journal of Molecular Structure, Elsevier, 2014 | 15.07.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Публикувани рецензии, становища и отзиви в научни/академични списания | RF_2014_ICBE1336: Speciation of chromium and vanadium in medicinal plants from selected farms in the vicinity of ferrochrome and vanadium mines, Bio-Medical Materials and Engineering, 2014 | 14.07.2014 |
| Доц. д-р Петя Николаева Петкова | В реферирани издания | Статии | Magneto-optical properties of Fe3+ ions in Bi4Ge3O12 // 12th International Conference on Nanotechnology (IEEE-NANO), 20 - 23 August 2012, Birmingham, UK, ISSN: 1944-9399, pp. 1-2, 2012, (P. Petkova) | 23.01.2014 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | Urbachs rule of Bi4Ge3O12 doped with 3d and 4d ions, P. Petkova, Optical Materials, Vol. 34, Issue 1, 2011, pp. 265-268 // Temperature-controlled synthesis and characterization of Bi4Ge3O12 nanowires, D.S. Kwak, Y.J. Kwon, H.G. Na, T.V. Khai, C. Lee, H.W. Kim, Chemical Engineering Journal, Vol. 222, 2013, pp. 337-344 | 23.11.2013 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | Urbachs rule of Bi4Ge3O12 doped with 3d and 4d ions, P. Petkova, Optical Materials, Vol. 34, Issue 1, 2011, pp. 265-268 // Effect of niobium doping on physical, thermal and spectral parameters of infrared transmitting BGO70 glasses, Khair-U-Nisa, Ashraf Chaudhry, M., 2013, Journal of Thermal Analysis and Calorimetry 111(1), pp. 417-423 | 23.11.2013 |
| Доц. д-р Петя Николаева Петкова | С импакт фактор | Цитирания | The Lattice Compatibility Theory (LCT): An attempt to explain Urbach tailing patterns in copper-doped bismuth sillenites (BSO) and germanates (BGO), P. Petkova, K. Boubakker, Journal of Alloys and Compounds, Vol. 546, 2013, pp. 176-179 // Structural properties of FeTe2 thin films synthesized by tellurization of amorphous iron oxide tin films, Materials Science in Semiconductor Processing, Vol. 16, 2013, 1912-1917 | 23.11.2013 |
