Structure and magnetic properties of R2Fe17Cx (x∼2.5)
- 6 January 1992
- journal article
- conference paper
- Published by AIP Publishing in Applied Physics Letters
- Vol. 60 (1) , 129-131
- https://doi.org/10.1063/1.107346
Abstract
A series of rare‐earth iron carbides were prepared by heat treatment of R2Fe17 compounds in methane. The nominal composition of these carbides is R2Fe17Cx, x∼2.5. The carbides retain the original Th2Zn17 or Th2Ni17 structure with a 6.5% volume expansion over the carbon‐free unit cell. For Sm2Fe17C2.5, the Curie temperature is 760 K and the easy magnetization direction is along the c axis. The anisotropy field of Sm2Fe17C2.5 at room temperature is 15±0.5 T.Keywords
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