Disordered state in IC(incommensurate)- and N(normal)-phases of Ca2CoSi2O7 deduced from variation of thermal displacement factors

被引：0
|
作者：
Kusaka, K [1 ]
Hagiya, K
Haga, N
Ohmasa, M
Iishi, K
机构：
[1] Himeji Inst Technol, Dept Mat Sci, Hyogo, Japan
[2] Japan Sci & Technol Corp, CREST, Saitama, Japan
[3] Himeji Inst Technol, Dept Life Sci, Hyogo, Japan
[4] Yamaguchi Univ, Dept Chem & Earth Sci, Yamaguchi, Japan
来源：
FERROELECTRICS | 2001年 / 250卷 / 1-4期
关键词：
D O I：
10.1080/00150190108225035
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The structure of Ca2CoSi2O7, has been determined at several temperatures in the range between 297 and 773K. Analyses of the anisotropic displacement parameters clarifies the disorder of the modulation waves that develop in the structure at higher temperatures. The evolution of the disorder in the structures was ascertained by observation of circular diffuse streaks in the vicinity of the transition temperature (TIC-N) between the IC- and N-phase.
引用
收藏
页码：71 / 74
页数：4
相关论文
共 13 条
  • [1] Variation of ordered arrangement of atoms in incommensurate Ca2CoSi2O7 accompanied by change of modulation wavelength
    Kusaka, K
    Hagiya, K
    Ohmasa, M
    Iishi, K
    FERROELECTRICS, 2001, 250 (1-4) : 79 - 82
  • [2] Magnetic Structure and Dielectric State in the Multiferroic Ca2CoSi2O7
    Soda, Minoru
    Hayashida, Shohei
    Yoshida, Toshiya
    Akaki, Mitsuru
    Hagiwara, Masayuki
    Avdeev, Maxim
    Zaharko, Oksana
    Masuda, Takatsugu
    JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2017, 86 (06)
  • [3] ATOMIC DISPLACEMENTS IN THE NORMAL-INCOMMENSURATE PHASE-TRANSITION IN CO-AKERMANITE (CA2COSI2O7)
    BROWN, NE
    ROSS, CR
    WEBB, SL
    PHYSICS AND CHEMISTRY OF MINERALS, 1994, 21 (07) : 469 - 480
  • [4] VARIATION OF Q AND ITS RELATION TO THE STRUCTURAL FEATURES IN Ca2CoSi2O7
    Ohmasa, M.
    ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 2002, 58 : C10 - C10
  • [5] Two-dimensional incommensurate structures of (Sr0.13Ca0.87)2CoSi2O7 and Ca2CoSi2O7:: Effects of substitution of interlayer cations
    Bagautdinov, B
    Hagiya, K
    Kusaka, K
    Ohmasa, M
    Iishi, K
    FERROELECTRICS, 2001, 250 (1-4) : 59 - 62
  • [6] Determination of structures of Ca2CoSi2O7, Ca2MgSi2O7, and Ca2(Mg0.55Fe0.45)Si2O7 in incommensurate and normal phases and observation of diffuse streaks at high temperature
    K. Kusaka
    K. Hagiya
    M. Ohmasa
    Y. Okano
    M. Mukai
    K. Iishi
    N. Haga
    Physics and Chemistry of Minerals, 2001, 28 : 150 - 166
  • [7] Determination of structures of Ca2COSi2O7, Ca2MgSi2O7, and Ca2(Mg0.55Fe0.45)Si2O7 in incommensurate and normal phases and observation of diffuse streaks at high temperature
    Kusaka, K
    Hagiya, K
    Ohmasa, M
    Okano, Y
    Mukai, M
    Iishi, K
    Haga, N
    PHYSICS AND CHEMISTRY OF MINERALS, 2001, 28 (03) : 150 - 166
  • [8] Variation of large-scale regularity in modulated structures of Ca2CoSi2O7 studied by a simulation method
    Kusaka, K
    Hagiya, K
    Ohmasa, M
    Iishi, K
    ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE CRYSTAL ENGINEERING AND MATERIALS, 2004, 60 : 369 - 374
  • [9] STRUCTURAL STUDIES ON INCOMMENSURATE-NORMAL PHASE TRANSITION IN Co-AKERMANITE, Ca2CoSi2O7.
    Hagiya, K.
    Kusaka, K.
    Haga, N.
    Ohmasa, M.
    Iishi, K.
    ACTA CRYSTALLOGRAPHICA A-FOUNDATION AND ADVANCES, 1996, 52 : C375 - C375
  • [10] The nature of the incommensurate structure in akermanite, Ca2MgSi2O7, and the character of its transformation from the normal structure
    McConnell, JDC
    McCammon, CA
    Angel, RJ
    Seifert, F
    ZEITSCHRIFT FUR KRISTALLOGRAPHIE, 2000, 215 (11): : 669 - 677
12