Magnetic properties of Fe3(1-x)Cr3xC alloys

被引：7
作者：
Zhao, Feng-qi [1 ]
Tegus, O. [1 ,2 ]
Fuquan, B. [1 ]
Bruck, E. [2 ]
机构：
[1] Inner Mongolia Normal Univ, Coll Phys & Elect Informat, Inner Mongolia Key Lab Phys & Chem Funct Mat, Hohhot 010022, Peoples R China
[2] Univ Amsterdam, Van der Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands
来源：
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2009年 / 16卷 / 03期
基金：
中国国家自然科学基金;
关键词：
magnetic properties; magnetocaloric effect; magnetic-entropy change; magnetic refrigeration; ENTROPY-CHANGE; ELECTRONIC-STRUCTURE; FE3C;
D O I：
10.1016/S1674-4799(09)60056-X
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The magnetic properties of Fe3(1-x)Cr3xC alloys with x=0.05, 0.1, 0.15, and 0.2, which crystallize in the cementite Fe3C-type structure with space group Pnma, were investigated by means of magnetization measurements. These alloys show temperature-induced second-order magnetic phase transitions. The Curie temperature (T-c) of these alloys decreases with increasing x. The isothermal magnetic-entropy changes of these alloys were derived from the magnetic isotherms measured with increasing temperature and increasing field. The maximum values of the magnetic-entropy change are about 0.9 and 3.6 J.kg(-1).K-1 at T-c=360 K for x = 0.05 in a magnetic field change from 0 to 1 T and 0 to 5 T, respectively.
引用
收藏
页码：314 / 316
页数：3
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