| Thermal Expansion Anomaly of Tb2Fe14Cr3 Compound |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 50271022. |
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| 摘 要： | We investigate the thermal expansion property of the Tb2Fe14Cr3 compound by means of x-ray diffraction. The result shows that the Tb2Fe14Cr3 compound has a hexagonal Th2Ni17-type structure. Negative thermalexpansion is found in the Tb2Fe14Cr3 compound from 296 to 493K by x-ray dilatometry. The coefficient of the average thermal expansion is α=-2.82 × 10-5K-1. In the temperature range 493--692K, the coefficient of the average thermal expansion is α=1.59 × 10-5K-1. The physical mechanism of thermal expansion anomaly of the Tb2Fe14Cr3 compound is discussed according to the temperature dependence of magnetization measured by a superconducting quantum interference device.
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| 关 键 词： | Tb2Fe14Cr3化合物 热膨胀 磁化 合金学 |
| 收稿时间： | 2007-11-20 |
Thermal Expansion Anomaly of Tb2Fe14Cr3 Compound |
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| Authors: | HAO Yan-Ming HE Xiao-Hong AN Li-Qun FU Bin |
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| Affiliation: | College of Science, Tianjin University of Science and Technology, 13th Street Teda, Tianjin 300457Department of Applied Physics, Taiyuan University of Technology, Taiyuan 030024College of Materials Science, Beijing University of Science and Technology, Being 100083 |
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| Abstract: | |
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| Keywords: | 65 40 De 65 70 +y 61 10 -i |
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