Crystal structures of the double perovskites Ba2Sr1-xCaxWO6

被引：23
|
作者：
Fu, W. T. [1 ]
Akerboom, S. [1 ]
IJdo, D. J. W. [1 ]
机构：
[1] Leiden Univ, Leiden Inst Chem, Gorlaeus Labs, NL-2300 RA Leiden, Netherlands
来源：
JOURNAL OF SOLID STATE CHEMISTRY | 2007年 / 180卷 / 05期
关键词：
perovskites; X-ray powder diffraction; crystal structure; X-RAY; LN; LA; TUNGSTATES; SYMMETRY; PR;
D O I：
10.1016/j.jssc.2007.03.008
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Structures of the double perovskites Ba(2)Srl-,Ca,WO6 have been studied by the profile analysis of X-ray diffraction data. The end members, Ba2SrWO6 and Ba2CaWO6, have the space group I2/m (tilt system a(0)b(-)b(-)) and Fm (3) over barm (tilt system a(0)a(0)a(0)), respectively. By increasing the Ca concentration, the monoclinic structure transforms to the cubic one via the rhombohedral R (3) over bar phase (tilt system a(-)a(-)a(-)) instead of the tetragonal I4/m phase (tilt system a(0)a(0)c(-)). This observation supports the idea that the rhombohedral structure is favoured by increasing the covalency of the octahedral cations in Ba2MMO6-type double perovskites, and disagrees with a recent proposal that the formation of the pi-bonding, e.g., d(0)-ion, determines the tetragonal symmetry in preference to the rhombohedral one. (C) 2007 Elsevier Inc. All rights reserved.
引用
收藏
页码：1547 / 1552
页数：6
相关论文
共 50 条
  • [31] Synthesis and structures of chromium double perovskites A2CrTaO6 (A = Sr, Ca)
    Cheah, Melina C. L.
    Kennedy, Brendan J.
    PHYSICA B-CONDENSED MATTER, 2006, 385 : 184 - 186
  • [32] Synthesis, structures and phase transitions in the double perovskites Sr2-xCaxCrNbO6
    Cheah, Melina C. L.
    Kennedy, Brendan J.
    Withers, Ray L.
    Yonemura, Masao
    Kamiyama, Takashi
    JOURNAL OF SOLID STATE CHEMISTRY, 2006, 179 (08) : 2487 - 2494
  • [33] Metallic and nonmetallic double perovskites:: A case study of A2FeReO6 (A = Ca, Sr, Ba)
    Gopalakrishnan, J
    Chattopadhyay, A
    Ogale, SB
    Venkatesan, T
    Greene, RL
    Millis, AJ
    Ramesha, K
    Hannoyer, B
    Marest, G
    PHYSICAL REVIEW B, 2000, 62 (14): : 9538 - 9542
  • [34] Preparation and Dielectric Spectroscopy Characterization of A2MnMoO6 (A = Ca, Sr and Ba) Double Perovskites
    Perianu, Elena-Adriana
    Gorodea, Ioana Aurelia
    Gheorghiu, Felicia
    Sandu, Andrei Victor
    Ianculescu, Adelina Carmen
    Sandu, Ion
    Iordan, Alexandra Raluca
    Palamaru, Mircea Nicolae
    REVISTA DE CHIMIE, 2011, 62 (01): : 17 - 20
  • [35] Crystal structures and chemistry of double perovskites Ba2M(II)M′(VI)O6 (M = Ca, Sr, M′ = Te, W, U)
    Fu, W. T.
    Au, Y. S.
    Akerboom, S.
    Ijdo, D. J. W.
    JOURNAL OF SOLID STATE CHEMISTRY, 2008, 181 (09) : 2523 - 2529
  • [36] Synthesis, structures and temperature-induced phase transitions of the Sr2Cd1-xCaxWO6 (0 ≤ x ≤ 1) double perovskite tungsten oxides
    Faik, A.
    Igartua, J. M.
    Pizarro, J. L.
    JOURNAL OF MOLECULAR STRUCTURE, 2009, 920 (1-3) : 196 - 201
  • [37] ALaMnBO6 (A = Ca, Sr, Ba; B = Fe, Ru) double perovskites
    Ramesha, K
    Thangadurai, V
    Sutar, D
    Subramanyam, SV
    Subbanna, GN
    Gopalakrishnan, J
    MATERIALS RESEARCH BULLETIN, 2000, 35 (04) : 559 - 565
  • [38] The intermediate tilt systems in the double perovskites Ba1-xSrxCaWO6 and Ba2-xSrxYSbO6
    Fu, W. T.
    Akerboom, S.
    Ijdo, D. J. W.
    JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 476 (1-2) : L11 - L15
  • [39] Structures and magnetic properties of double perovskites A2LnMO6 and 6H-perovskites Ba3LnRu2O9 (A = Sr, Ba; Ln = Y, lanthanides; M = Nb, Ta, Ru)
    Hinatsu, Y
    Doi, Y
    BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN, 2003, 76 (06) : 1093 - 1113
  • [40] MAGNETISM IN DOUBLE PEROVSKITES BA2CRMOO6
    Bouadjemi, Bouabdellah
    Matougui, Mohamed
    Houari, Mohamed
    Bentata, Samir
    Lantri, Tayeb
    Haid, Slimane
    ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 2019, 75 : E339 - E339
12345