Mn2CoSb compound:: Structural, electronic, transport and magnetic properties

被引：71
作者：
Dai, Xuefang
Liu, Guodong
Chen, Lijie
Chen, Jinglan
Wu, Guangheng
机构：
[1] Chinese Acad Sci, Inst Phys, State Key Lab Magnetism, Beijing 100080, Peoples R China
[2] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China
来源：
SOLID STATE COMMUNICATIONS | 2006年 / 140卷 / 11-12期
基金：
中国国家自然科学基金;
关键词：
hensler alloy; electronic band structure; magnetism; transport properties;
D O I：
10.1016/j.ssc.2006.09.030
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
High-ordered Mn2CoSb compound has been synthesized successfully by a melt-spinning technique. The band structure calculation shows that Mn2CoSb is a true half-metallic ferromagnet characterized by an indirect Gamma-X band gap of about 0.4007 eV around the Fermi level for minority-spin electrons. The calculated magnetic moment is 4.00 AB per formula unit, which is close to the experimental value of 3.92 It B. The electronic resistivity shows a power-law T-1.33 temperature dependence at low temperature. The T-1.5 dependence of the magnetization was observed at low temperature, which is expected from Bloch's law. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码：533 / 537
页数：5
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