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The Extent and Crystal Structure of the Solid Solution Based on Ca2Pr2Cu5O10
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Gong-Bao SONG1, 2, Cang-Qiong HAN2, Jing-Kui LIANG2, 3, Guang-Hui RAO2
Chinese Journal of High Pressure Physics | 2004, 18(1) : 27 - 35
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Chinese Journal of High Pressure Physics | 2004, 18(1): 27-35
The Extent and Crystal Structure of the Solid Solution Based on Ca2Pr2Cu5O10
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Gong-Bao SONG1, 2, Cang-Qiong HAN2, Jing-Kui LIANG2, 3, Guang-Hui RAO2
Affiliations
  • 1.School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, 621002, China
  • 2.Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
  • 3.International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China
Published: 2004-03-05
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The extent and crystal structure of the solid solution based on Ca2Pr2Cu5O10 were studied by X-ray diffraction combined with Rietveld structure refinement. According to the principle of valence neutralization and the disappearing-phase method, in the Ca-rich region (i.e. Ca/Pr>1) the composition of solid solution can be expressed as the general stoichiometry Ca2+xPr2-xCu5O10, and in the Pr-rich region (i.e. Ca/Pr<1) as Ca1.7Pr2.2Cu5O10、Ca1.4Pr2.4Cu5O10, i.e., the solid solubility of the Ca2Pr2Cu5O10-based solid solution can be determined as from Ca2.4Pr1.6Cu5O10 to Ca1.4Pr2.4Cu5O10. The crystal structure of Ca2Pr2Cu5O10 based solid solution is an incommensurate phase based on the orthorhombic NaCuO2-type subcell. The lattice parameters of Ca2.4Pr1.6Cu5O10 subcell are a0=0.28246 (7) nm, b0=0.63693 (1) nm, c0=1.06794 (1) nm, and its orthorhombic superstructure is with a=5a0, b=b0, c=5c0. The Ca2.4Pr1.6Cu5O10 structure is also determined by using a monoclinic supercell with space group P21/c, Z=4, a=5a0, b=b0, c=c0/sinβ and β=104.79 ° or 136.60 °, V=5 a0b0 c0. In the structure of the solid solution based on Ca2Pr2Cu5O10, the mutual substitution between Pr and Ca is possible in some bound. Furthermore, they are distributed disorderly in the structure.

Ca2Pr2Cu5O10  /  ternary solid solution  /  X-ray diffraction  /  Rietveld refinement  /  crystal structure
宋功保, 韩苍穹, 梁敬魁, 饶光辉. 基于组分Ca2Pr2Cu5O10三元固溶区的范围和晶体结构. 高压物理学报, 2004 , 18 (1) : 27 -35 .
Gong-Bao SONG, Cang-Qiong HAN, Jing-Kui LIANG, Guang-Hui RAO. The Extent and Crystal Structure of the Solid Solution Based on Ca2Pr2Cu5O10[J]. Chinese Journal of High Pressure Physics, 2004 , 18 (1) : 27 -35 .
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Year 2004 volume 18 Issue 1
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  • Receive Date：2003-05-24
  • Online Date：2026-10-31
  • Published：2004-03-05
Article Data
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History
  • Received：2003-05-24
  • Revised：2003-09-22
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Affiliations
    1.School of Material Science and Engineering, Southwest University of Science and Technology, Mianyang, 621002, China
    2.Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080, China
    3.International Center for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China
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表12种不同金属材料的力学参数
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多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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