| 三元金属间化合物La3Cu3Bi4的合成、结构与性能研究 |
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| 引用本文： | 鲁玉明,范峰,蔡传兵,曹世勋,张金仓.三元金属间化合物La3Cu3Bi4的合成、结构与性能研究[J].上海大学学报(英文版),2008,12(6):486-488. |
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| 作者姓名： | 鲁玉明 范峰 蔡传兵 曹世勋 张金仓 |
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| 摘 要： | The new intermetallic compound La3Cu3Bi4 was synthesized by arc melting method followed by annealing. The crystal structure refined using the Rietveld method and X-ray powder diffraction data showed to be Y3Au3Sb4 structure type with space group I-^43D （No.220）. The unit cell parameters were a = 0.997 797（7） nm and V = 0.993 41（2） nm^3. The structure was characterized by covalent Cu-Bi4 tetrahedron, which formed three-dimensional network by sharing corners and La atoms separated in the space of Cu-Bi4 tetragon. The expansion of La3Cu3Bi4 studied by using low temperature X-ray diffraction showed to be positive expansion and diminished with the temperature rising.
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| 关 键 词： | 建筑物 La3Ca3Bi4 Y3Au3Sb4 建筑材料 建筑构成 金属材料 |
| 收稿时间： | 2007-09-04 |
| 修稿时间： | 2008-02-05 |
Y3Au3Sb4 type structure La3Cu3Bi4: synthesis, structure and property |
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| Yu-ming Lu,Feng Fan,Chuan-bing Cai,Shi-xun Cao,Jin-chang Zhang.Y3Au3Sb4 type structure La3Cu3Bi4: synthesis, structure and property[J].Journal of Shanghai University(English Edition),2008,12(6):486-488. |
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| Authors: | Yu-ming Lu Feng Fan Chuan-bing Cai Shi-xun Cao Jin-chang Zhang |
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| Institution: | (1) Department of Physics, College of Sciences, Shanghai University, Shanghai, 200444, P. R. China |
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| Abstract: | The new intermetallic compound La3Cu3Bi4 was synthesized by arc melting method followed by annealing. The crystal structure refined using the Rietveld method and
X-ray powder diffraction data showed to be Y3Au3Sb4 structure type with space group I
 3D (No.220). The unit cell parameters were a = 0.997 797(7) nm and V = 0.993 41(2) nm3. The structure was characterized by covalent Cu-Bi4 tetrahedron, which formed three-dimensional network by sharing corners and La atoms separated in the space of Cu-Bi4 tetragon. The expansion of La3Cu3Bi4 studied by using low temperature X-ray diffraction showed to be positive expansion and diminished with the temperature rising. |
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| Keywords: | rare earth copper bismuth intermetallics Rietveld method |
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