RARE-EARTH TRANSITION-METAL CARBIDES

被引：17
|
作者：
TANG, ZX
SINGLETON, EW
HADJIPANAYIS, GC
机构：
[1] Department of Physics and Astronomy, University of Delaware, Newark, DE
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1992年 / 28卷 / 05期
关键词：
D O I：
10.1109/20.179560
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Methane and ethane were used to prepare rare-earth transition metal carbides. The structural and magnetic properties of these carbides have been studied. Interstitial carbon atoms expand the unit cell of the R2Fe17 (R=Y, Ce, Pr, Nd, Sm, Dy, Er) and RFe10M2 (R = Y, Nd, Sm and M=Mo, V) structures by about 7.5 and 1.5%, respectively. The lattice expansion resulted in increases of Curie temperature and spontaneous magnetization. The easy magnetization direction (EMD) of Sm2Fe17 is changed from planar to uniaxial with the carbon uptake, while in other R2Fe17 compounds it remains planar. For RFe10M2 with R=Y and Nd, a uniaxial anisotropy is observed after carbonation.
引用
收藏
页码：2572 / 2574
页数：3
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