Article

Magnetic properties and coercivity mechanism of melt-spun Sm(Co1−xFex)6.8Zr0.2C0.06 ribbons with TbCu7 structure

Department of Physics, Jilin University, Changchun, 130023, China; State Key Laboratory of Magnetism, Institute of Physics and Centre for Condensed Matter Physics, Chinese Academy of Sciences, Beijing P.O. Box 603, Beijing 100080, China
Journal of Magnetism and Magnetic Materials DOI:10.1016/j.jmmm.2004.04.111 pp.255-260

ABSTRACT The effect of Fe addition on the structure and magnetic properties of melt-spun Sm(Co1−xFex)6.8Zr0.2C0.06 ribbons have been investigated. Only TbCu7 structure is found by X-ray diffraction pattern. The added Fe results in a significant rise in saturation magnetization and remanence. The coercivity decreases with the increase of x. For the ribbons with x=0.25, the remanence, intrinsic coercivity and maximum energy product are , and , respectively. The coercivity mechanism is mainly controlled by inhomogeneous domain wall pinning for x=0.25.

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Keywords

added Fe results
 
Fe addition
 
inhomogeneous domain wall pinning
 
intrinsic coercivity
 
significant rise
 
TbCu7 structure
 
X-ray diffraction pattern