Thermal Expansion Anomaly of Tb2Fe14Cr3 Compound

HAO Yan-Ming; HE Xiao-Hong; AN Li-Qun; Fu Bin

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Thermal Expansion Anomaly of Tb2Fe14Cr3 Compound

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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 thermal expansion is found in the Tb2Fe14Cr3 compound from 296 to 493K by x-ray dilatometry.The coefficient of the average thermal expansion is (a)=-2.82×10-5 K-1.In the temperature range 493-692K,the coefficient of the average thermal expansion is (a)=1.59×10-5 K-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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《中国物理快报：英文版》 |2008年第2期|661-662|共2页
作者
HAO Yan-Ming; HE Xiao-Hong; AN Li-Qun; Fu Bin;
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College of Science,Tianjin University of Science and Technology,13th Street Teda,Tianjin,300457;

Department of Applied Physics,Taiyuan University of Technology,Taiyuan,030024;

College of Science,Tianjin University of Science and Technology,13th Street Teda,Tianjin,300457;

College of Materials Science,Beijing University of Science and Technology,Being,100083;

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中图分类物理学;
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Thermal Expansion Anomaly of Tb2Fe14Cr3 Compound

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