Effect of quantum fluctuations and isotopic substitution on the curie temperature of BaTiO3, PbTiO3, and KNbO3

被引：0
|
作者：
O. E. Kvyatkovskiĭ
G. A. Zakharov
机构：
[1] Russian Academy of Sciences,Ioffe Physicotechnical Institute
[2] St. Petersburg State Polytechnical University,undefined
来源：
Physics of the Solid State | 2006年 / 48卷
关键词：
77.80.Bh; 64.30.+t; 77.84.Dy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The Hartree-Fock formalism and density functional theory are used in first-principles calculations of the Landau-Ginzburg free-energy expansion coefficients in the Devonshire-Barrett one-ion model for BaTiO3, PbTiO3, and KNbO3. The Curie temperature T0 and the Curie-Weiss constant are calculated. The effect of quantum fluctuations on T0 is considered in the approximation of the first quantum correction to the free energy. The quantum shift of the Curie temperature ΔT0quant for BaTiO3, PbTiO3, and KNbO3 and the isotopic shift ΔT0iso for barium titanate due to the substitution 48Ti → 46Ti or 48Ti → 50Ti are calculated.
引用
收藏
页码：1034 / 1037
页数：3
相关论文
共 50 条
  • [21] Field dependent specific heat of PbTiO3 and KNbO3 ferroelectric perovskites
    Singh, Talvinder
    Kumar, Ashok
    Naithani, U. C.
    INDIAN JOURNAL OF PURE & APPLIED PHYSICS, 2011, 49 (01) : 59 - 63
  • [22] Anisotropy of the electron and hole drift mobility in KNbO3 and BaTiO3
    Bernasconi, P
    Biaggio, I
    Zgonik, M
    Gunter, P
    PHYSICAL REVIEW LETTERS, 1997, 78 (01) : 106 - 109
  • [23] Study on photorefractive properties of BaTiO3, KNSBN and KNbO3 crystals
    Zhang, Z.G.
    Sprenger, M.
    Gyger, M.
    Eichler, H.J.
    Yin, Aimin
    Fu, Panming
    Shen, D.Z.
    Ma, X.Y.
    Chen, J.Y.
    Guangdianzi Jiguang/Journal of Optoelectronics Laser, 9 : 310 - 312
  • [24] Effect of thermally stimulated autosegregation on the nanomorphology of BaTiO3 and PbTiO3 surfaces
    Yu. Ya. Tomashpolsky
    N. V. Sadovskaya
    Inorganic Materials, 2006, 42 : 665 - 670
  • [25] Theory of PbTiO3, BaTiO3, and SrTiO3 surfaces
    Meyer, B
    Padilla, J
    Vanderbilt, D
    FARADAY DISCUSSIONS, 1999, 114 : 395 - 405
  • [26] Effect of thermally stimulated autosegregation on the nanomorphology of BaTiO3 and PbTiO3 surfaces
    Tomashpolsky, Yu. Ya.
    Sadovskaya, N. V.
    INORGANIC MATERIALS, 2006, 42 (06) : 665 - 670
  • [27] Minimum tetragonality in PbTiO3/BaTiO3 ferroelectric superlattices
    Hong, Liang
    Li, Yulan
    Wu, Pingping
    Chen, Long-Qing
    JOURNAL OF APPLIED PHYSICS, 2013, 114 (14)
  • [28] Minimum tetragonality in PbTiO3/BaTiO3 ferroelectric superlattices
    Hong, L. (lxh42@psu.edu), 1600, American Institute of Physics Inc. (114):
  • [29] BaTiO3 and PbTiO3 perovskite as catalysts for methane combustion
    Popescu, Ionel
    Urda, Adriana
    Yuzhakova, Tatiana
    Marcu, Ioan-Cezar
    Kovacs, Jozsef
    Sandulescu, Ioan
    COMPTES RENDUS CHIMIE, 2009, 12 (09) : 1072 - 1078
  • [30] Photoferromechanical and photoferroplastic effects in BaTiO3 and PbTiO3 crystals
    Grekov, A.A.
    Kramarov, S.O.
    Rozin, L.G.
    Borodina, V.V.
    Turik, S.A.
    Anglada, J.
    Ferroelectrics, 1994, 158 (1 -4 pt 8) : 73 - 79
12345