Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations
Само за регистроване кориснике
2017
Аутори
Đorđević, Vesna R.Brik, Mikhail G.
Srivastava, Alok M.
Medić, Mina M.
Vulić, Predrag J.
Glais, Estelle
Viana, Bruno
Dramićanin, Miroslav
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
Herein, the synthesis, structural and crystal field analysis and optical spectroscopy of Mn4+ doped metal titanates ATiO(3) (A = Ca, Mg) are presented. Materials of desired phase were prepared by molten salt assisted sol-gel method in the powder form. Crystallographic data of samples were obtained by refinement of X-ray diffraction measurements. From experimental excitation and emission spectra and structural data, crystal field parameters and energy levels of Mn4+ in CaTiO3 and MgTiO3 were calculated by the exchange charge model of crystal-field theory. It is found that crystalline field strength is lower (Dq = 1831 cm(-1)) in the rhombohedral Ilmenite MgTiO3 structure due to the relatively longer average Mn4+-O2- bond distance (2.059 angstrom), and higher (Dq = 2017 cm(-1)) in orthorhombic CaTiO3 which possess shorter average Mn4+-O2- bond distance (1.956 angstrom). Spectral positions of the Mn(4+2)Eg - GT (4)A(2g) transition maxima is 709 nm in MgTiO3 and 717 nm in CaTiO3 respective...ly in good agreement with calculated values. (C) 2017 Elsevier B.V. All rights reserved.
Кључне речи:
Red luminescence / Mn4+ / Perovskite / Crystal field / LEDИзвор:
Optical Materials, 2017, 74, 46-51Финансирање / пројекти:
- Физика аморфних и наноструктурних материјала (RS-MESTD-Basic Research (BR or ON)-171022)
- Cluster of excellence MATISSE [ANR-11-IDEX-0004-02], DGA (Direction Generale de LArmement, France), a [451-03-39/2016-09/19], Recruitment Program of High-end Foreign Experts [GDW20145200225], Ministry of Education and Research of Estonia [PUT430], European Regional Development Fund [TK141], g [451-03-39/2016-09/19]
Напомена:
- 6th International Conference of Excited States of Transition Elements (ESTE) / Workshop on Luminescence, Aug 21-26, 2016, Polanica Zdroj, Poland
DOI: 10.1016/j.optmat.2017.03.021
ISSN: 0925-3467; 1873-1252
WoS: 000418989400008
Scopus: 2-s2.0-85017014821
Колекције
Институција/група
VinčaTY - JOUR AU - Đorđević, Vesna R. AU - Brik, Mikhail G. AU - Srivastava, Alok M. AU - Medić, Mina M. AU - Vulić, Predrag J. AU - Glais, Estelle AU - Viana, Bruno AU - Dramićanin, Miroslav PY - 2017 UR - https://vinar.vin.bg.ac.rs/handle/123456789/7197 AB - Herein, the synthesis, structural and crystal field analysis and optical spectroscopy of Mn4+ doped metal titanates ATiO(3) (A = Ca, Mg) are presented. Materials of desired phase were prepared by molten salt assisted sol-gel method in the powder form. Crystallographic data of samples were obtained by refinement of X-ray diffraction measurements. From experimental excitation and emission spectra and structural data, crystal field parameters and energy levels of Mn4+ in CaTiO3 and MgTiO3 were calculated by the exchange charge model of crystal-field theory. It is found that crystalline field strength is lower (Dq = 1831 cm(-1)) in the rhombohedral Ilmenite MgTiO3 structure due to the relatively longer average Mn4+-O2- bond distance (2.059 angstrom), and higher (Dq = 2017 cm(-1)) in orthorhombic CaTiO3 which possess shorter average Mn4+-O2- bond distance (1.956 angstrom). Spectral positions of the Mn(4+2)Eg - GT (4)A(2g) transition maxima is 709 nm in MgTiO3 and 717 nm in CaTiO3 respectively in good agreement with calculated values. (C) 2017 Elsevier B.V. All rights reserved. T2 - Optical Materials T1 - Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations VL - 74 SP - 46 EP - 51 DO - 10.1016/j.optmat.2017.03.021 ER -
@article{ author = "Đorđević, Vesna R. and Brik, Mikhail G. and Srivastava, Alok M. and Medić, Mina M. and Vulić, Predrag J. and Glais, Estelle and Viana, Bruno and Dramićanin, Miroslav", year = "2017", abstract = "Herein, the synthesis, structural and crystal field analysis and optical spectroscopy of Mn4+ doped metal titanates ATiO(3) (A = Ca, Mg) are presented. Materials of desired phase were prepared by molten salt assisted sol-gel method in the powder form. Crystallographic data of samples were obtained by refinement of X-ray diffraction measurements. From experimental excitation and emission spectra and structural data, crystal field parameters and energy levels of Mn4+ in CaTiO3 and MgTiO3 were calculated by the exchange charge model of crystal-field theory. It is found that crystalline field strength is lower (Dq = 1831 cm(-1)) in the rhombohedral Ilmenite MgTiO3 structure due to the relatively longer average Mn4+-O2- bond distance (2.059 angstrom), and higher (Dq = 2017 cm(-1)) in orthorhombic CaTiO3 which possess shorter average Mn4+-O2- bond distance (1.956 angstrom). Spectral positions of the Mn(4+2)Eg - GT (4)A(2g) transition maxima is 709 nm in MgTiO3 and 717 nm in CaTiO3 respectively in good agreement with calculated values. (C) 2017 Elsevier B.V. All rights reserved.", journal = "Optical Materials", title = "Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations", volume = "74", pages = "46-51", doi = "10.1016/j.optmat.2017.03.021" }
Đorđević, V. R., Brik, M. G., Srivastava, A. M., Medić, M. M., Vulić, P. J., Glais, E., Viana, B.,& Dramićanin, M.. (2017). Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations. in Optical Materials, 74, 46-51. https://doi.org/10.1016/j.optmat.2017.03.021
Đorđević VR, Brik MG, Srivastava AM, Medić MM, Vulić PJ, Glais E, Viana B, Dramićanin M. Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations. in Optical Materials. 2017;74:46-51. doi:10.1016/j.optmat.2017.03.021 .
Đorđević, Vesna R., Brik, Mikhail G., Srivastava, Alok M., Medić, Mina M., Vulić, Predrag J., Glais, Estelle, Viana, Bruno, Dramićanin, Miroslav, "Luminescence of Mn4+ ions in CaTiO3 and MgTiO3 perovskites: Relationship of experimental spectroscopic data and crystal field calculations" in Optical Materials, 74 (2017):46-51, https://doi.org/10.1016/j.optmat.2017.03.021 . .