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
  • [1] Crystal structural and optical properties of Cr-doped Y2Ti2O7 and Y2Sn2O7 pyrochlores
    Matteucci, F.
    Cruciani, G.
    Dondi, M.
    Baldi, G.
    Barzanti, A.
    ACTA MATERIALIA, 2007, 55 (07) : 2229 - 2238
  • [2] Theoretical investigation of optical spectra and covalent effect of Cr4+ in Y2Ti2O7 and Y2Sn2O7
    Feng, Wen-Lin
    Xue, Ji-Yuan
    PHYSICA B-CONDENSED MATTER, 2012, 407 (12) : 2344 - 2346
  • [3] Comparative analysis of crystal field effects and optical spectroscopy of six-coordinated Mn4+ ion in the Y2Ti2O7 and Y2Sn2O7 pyrochlores
    Brik, M. G.
    Srivastava, A. M.
    Avram, N. M.
    OPTICAL MATERIALS, 2011, 33 (11) : 1671 - 1676
  • [4] Mechanical properties of Y2Ti2O7
    He, L. F.
    Shirahata, J.
    Nakayama, T.
    Suzuki, T.
    Suematsu, H.
    Ihara, I.
    Bao, Y. W.
    Komatsu, T.
    Niihara, K.
    SCRIPTA MATERIALIA, 2011, 64 (06) : 548 - 551
  • [5] Thermal properties of the pyrochlore, Y2Ti2O7
    Johnson, Michel B.
    James, David D.
    Bourque, Alex
    Dabkowska, Hanna A.
    Gaulin, Bruce D.
    White, Mary Anne
    JOURNAL OF SOLID STATE CHEMISTRY, 2009, 182 (04) : 725 - 729
  • [6] Phonon Spectrum and Elastic Properties of Y2Sn2O7
    Chernyshev, V. A.
    Glukhov, K., I
    Agzamova, P. A.
    OPTICS AND SPECTROSCOPY, 2021, 129 (10) : 1074 - 1083
  • [7] Phonon Spectrum and Elastic Properties of Y2Sn2O7
    V. A. Chernyshev
    K. I. Glukhov
    P. A. Agzamova
    Optics and Spectroscopy, 2021, 129 : 1074 - 1083
  • [8] Role of sintering temperature on thermal, electrical and structural properties of Y2Ti2O7 pyrochlores
    Gill, Jasmeet Kaur
    Pandey, O. P.
    Singh, K.
    INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 2011, 36 (22) : 14943 - 14947
  • [9] Topotactic reduction of Y2Ti2O7
    Hayward, MA
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2005, 230 : U2172 - U2173
  • [10] Structural and optical characterization of Y2Ti2O7 and Y2Ti1.5Hf0.5O7 nanomaterials
    S. Anila
    Annamma John
    Jijimon K. Thomas
    Sam Solomon
    Journal of Materials Science: Materials in Electronics, 2017, 28 : 18497 - 18507
12345