An interpretation of the optical properties of Cr4+-activated pyrochlores, Y2Ti2O7 and Y2Sn2O7

被引：23
|
作者：
Srivastava, A. M. [1 ]
机构：
[1] GE Global Res, Niskayuna, NY 12309 USA
来源：
JOURNAL OF LUMINESCENCE | 2009年 / 129卷 / 09期
关键词：
Pyrochlore; Cr4+; Crystal field splitting; Covalence; Ligand polarization; TETRAHEDRALLY COORDINATED CR4+; THEORETICAL CALCULATION; ABSORPTION-SPECTRUM; CRYSTAL; OXIDES;
D O I：
10.1016/j.jlumin.2009.04.015
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A qualitative model is proposed to explain the differences between the optical properties of the six-coordinated Cr4+ ion in the pyrochlores, Y2Sn2O7 and Y2Ti2O7, It is shown that polarization of the electron density of the oxygen ions occupying the 48f sites of the pyrochlore lattice is responsible for the observed differences in the optical properties. (C) 2009 Published by Elsevier B.V.
引用
收藏
页码：1000 / 1002
页数：3
相关论文
共 50 条
  • [21] Surface Ferromagnetism in Y2Sn2O7 Pyrochlore Nanoparticles
    Borah, Kulendra
    Longchar, Lanuakum A.
    Babu, P. D.
    Jayaramulu, Kolleboyina
    Sundarayya, Y.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2024, 1008
  • [22] Effects of distortions in ion-host systems on optical spectra, crystal-field and spin-Hamiltonian parameters of Cr3+ ions doped pyrochlores Y2Ti2O7 and Y2Sn2O7: exchange charge model and superposition model calculations
    Biswas, Anwesha
    Sarkar, Shankhanil
    Jana, Yatramohan
    Swarnakar, Debasish
    Rudowicz, Czeslaw
    PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2023, 25 (06) : 5082 - 5094
  • [23] High-pressure synchrotron X-ray diffraction study of the pyrochlores: Ho2Ti2O7, Y2Ti2O7 and Tb2Ti2O7
    Scott, Paul R.
    Midgley, A.
    Musaev, O.
    Muthu, D. V. S.
    Singh, S.
    Suryanarayanan, R.
    Revcolevschi, A.
    Sood, A. K.
    Kruger, M. B.
    HIGH PRESSURE RESEARCH, 2011, 31 (01) : 219 - 227
  • [24] Thermodynamic Properties of Y2Ti2O7 and Eu2Ti2O7 in the Temperature Range 7-1800 K
    Gagarin, P. G.
    Gus'kov, A. V.
    Khoroshilov, A. V.
    Gus'kov, V. N.
    Kondrat'eva, O. N.
    Ryumin, M. A.
    Nikiforova, G. E.
    Gavrichev, K. S.
    RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, 2024, 98 (09) : 1883 - 1894
  • [25] FORMATION OF SOLID-SOLUTIONS IN THE SYSTEMS Y2TI2O7-CR2TI2O7 AND Y2TI2O7-V2TI2O7
    PESHEV, P
    MANUILOV, N
    DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE, 1989, 42 (02): : 81 - 83
  • [26] EFFUSION AND VACUUM CONDENSATION OF THE TITANTES SC2TI2O7, Y2TI2O7, LANTHANIDES2TI2O7
    KHODOS, MY
    KRIVOSHEEV, NV
    TETERIN, GA
    ALEKSEEV, OG
    ZHURAVLEV, YF
    INORGANIC MATERIALS, 1990, 26 (03) : 484 - 488
  • [27] Synthesis and characterization of Y2Ti2O7 and ErxY2-xTi2O7 nanofibers
    Mondal, Kanchan
    Hartman, Kaleb
    Dasgupta, Debalina
    Trifon, George
    Dasari, Mallika
    JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY, 2015, 73 (01) : 265 - 269
  • [28] Ionic conductivity, structural and thermal properties of pure and Sr2+ doped Y2Ti2O7 pyrochlores for SOFC
    Gill, Jasmeet Kaur
    Pandey, O. P.
    Singh, K.
    SOLID STATE SCIENCES, 2011, 13 (11) : 1960 - 1966
  • [29] Muon diffusion and electronic magnetism in Y2Ti2O7
    Rodriguez, J. A.
    Yaouanc, A.
    Barbara, B.
    Pomjakushina, E.
    Quemerais, P.
    Salman, Z.
    PHYSICAL REVIEW B, 2013, 87 (18):
  • [30] SMALL-POLARON CONDUCTION IN Y2TI2O7
    GOLDSCHMIDT, D
    TULLER, HL
    PHYSICAL REVIEW B, 1986, 34 (08): : 5558 - 5561
12345