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首页> 外文期刊>Inorganic materials >Physicochemical Properties of La(Ba,M)CuFeO_(5+δ) (M = Sr, Ca, Mg) Solid Solutions
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Physicochemical Properties of La(Ba,M)CuFeO_(5+δ) (M = Sr, Ca, Mg) Solid Solutions

机译：La（Ba，M）CuFeO_（5 +δ）（M = Sr，Ca，Mg）固溶体的理化性质

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摘要

The crystal structure of LaBa_(1-x)M_xCuFeO_(5+δ) (M = Sr, Ca, Mg; 0 < x ≤ 0.5) solid solutions has been studied by x-ray diffraction and IR absorption spectroscopy, and their thermal stability, thermal expansion, and electrical conductivity have been determined in air between 290 and 1270 K. The structure of LaBa_(1-x)Sr_xCuFeO_(5+δ) has been shown to change from cubic to tetragonal at x approx = 0.4-0.45, whereas the LaBa_(1-x)M_xCuFeO_(5+δ) (M = Ca, Mg) solid solutions have a cubic structure up to x = 0.5. The composition dependences of structural parameters and physicochemical properties for LaBa_(1-x)Sr_xCuFeO_(5+δ) show anomalies at x = 0.25, which suggests ordering of the La~(3+), Ba~(2+), and Sr~(2+) cations in the structure of La(Ba,Sr)CuFeO_(5+δ), leading to the formation of a new chemical compound, LaBa_(3/4)Sr_(1/4)CuFeO_(5+δ).
机译：通过X射线衍射和红外吸收光谱研究了LaBa_（1-x）M_xCuFeO_（5 +δ）（M = Sr，Ca，Mg; 0

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  • 来源
    《Inorganic materials》 |2006年第4期|p.436-442|共7页
  • 作者

    A. I. Klyndyuk; E. A. Chizhova;

  • 作者单位

    Belarussian State Technological University, ul. Sverdlova 13a, Minsk, 220050 Belarus;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
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