RAMAN-SCATTERING STUDY OF ACCEPTOR-DOPED BACEO3

被引:84
|
作者
SCHERBAN, T
VILLENEUVE, R
ABELLO, L
LUCAZEAU, G
机构
[1] LIESG, ENSEEG, 38402 St. Martin d'Héres
基金
美国国家科学基金会;
关键词
D O I
10.1016/0167-2738(93)90339-5
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Raman scattering studies of perovskite-structured BaCeO3 acceptor-doped with the rare earth ions Yb3+, Gd3+ and Nd3+ are presented. Room temperature spectra of BaCeO3 doped with 5% Yb3+ and 5% Gd3+ are similar to that observed for undoped BaCeO3, having an orthorhombic perovskite structure. However, 5% doping with Nd3+ results in a strikingly different Raman spectrum with fewer bands, indicating a tetragonal structure. Moreover, the distortion of the structure towards the higher symmetry phase is an increasing function of Nd dopant concentration, 10% doping giving a nearly cubic structure. A broad band appearing at 624 cm-1 which increases in intensity with increasing Nd dopant concentration probably arises from dopant-oxygen ion vibrational modes. The Raman scattering results are interpreted in terms of the ionic radii of the dopants and, further, are compared to existing conductivity results.
引用
收藏
页码:93 / 98
页数:6
相关论文
共 50 条
  • [31] CO Catalytic Oxidation Performances of Pd-Doped BaCeO3
    Tan, Xihan
    Li, Ying
    Wu, Pengpeng
    NANOSCIENCE AND NANOTECHNOLOGY LETTERS, 2020, 12 (11) : 1293 - 1300
  • [32] Atomistic study of doped BaCeO3:: Dopant site-selectivity and cation nonstoichiometry
    Wu, J
    Davies, RA
    Islam, MS
    Haile, SM
    CHEMISTRY OF MATERIALS, 2005, 17 (04) : 846 - 851
  • [33] Study on stability and electrical performance of yttrium and bismuth co-doped BaCeO3
    Chi, Xiaowei
    Zhang, Jingchao
    Wu, Meifen
    Liu, Yu
    Wen, Zhaoyin
    CERAMICS INTERNATIONAL, 2013, 39 (05) : 4899 - 4906
  • [34] Kinetic Monte Carlo study of protonic diffusion and conduction in Gd-doped BaCeO3
    Hermet, Jessica
    Bottin, Francois
    Dezanneau, Guilhem
    Geneste, Gregory
    SOLID STATE IONICS, 2013, 252 : 48 - 55
  • [35] Calorimetric study of phase transitions in the perovskite BaCeO3
    V. M. Egorov
    Yu. M. Baikov
    N. F. Kartenko
    B. T. Melekh
    Yu. N. Filin
    Physics of the Solid State, 1998, 40 : 1911 - 1914
  • [36] Calorimetric study of phase transitions in the perovskite BaCeO3
    Egorov, VM
    Baikov, YM
    Kartenko, NF
    Melekh, BT
    Filin, YN
    PHYSICS OF THE SOLID STATE, 1998, 40 (11) : 1911 - 1914
  • [37] Effect of CuO on microstructure and conductivity of Y-doped BaCeO3
    Presto, S.
    Viviani, M.
    SOLID STATE IONICS, 2016, 295 : 111 - 116
  • [38] Protons and other defects in BaCeO3:: a computational study
    Glöckner, R
    Islam, MS
    Norby, T
    SOLID STATE IONICS, 1999, 122 (1-4) : 145 - 156
  • [39] Wet chemical synthesis of Nd doped BaCeO3 proton conductor
    Chen, FL
    Sorensen, OT
    Meng, GY
    Peng, DK
    HIGH TEMPERATURE ELECTROCHEMISTRY: CERAMICS AND METALS, 1996, : 199 - 204
  • [40] Synthesis;: Structure and electrochemical characterization of Eu-doped BaCeO3
    Kunstler, K
    Lang, HJ
    Voland, L
    Tomandl, G
    PROCEEDINGS OF THE FIFTH INTERNATIONAL SYMPOSIUM ON SOLID OXIDE FUEL CELLS (SOFC-V), 1997, 97 (40): : 1066 - 1075