Effect of additives on the magnetic properties and microstructure of melt spun SmCo6.9Hf0.1M0.1 (M=B, C, Nb, Si, Ti) ribbons

Effect of additives on the magnetic properties, phase evolution, and microstructure of SmCo6.9Hf0.1M0.1 (M = B, C, Nb, Si, and Ti) ribbons by melt spinning technique under sufficient supercooling condition have been investigated. Among those additives, C is the most effective element in refining the...

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Veröffentlicht in:	Journal of alloys and compounds 2008-05, Vol.455 (1-2), p.506-509
Hauptverfasser:	CHANG, H. W, HUANG, S. T, CHANG, C. W, CHIU, C. H, CHEN, I. W, CHANG, W. C, SUN, A. C, YAR, Y. D
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Exact sciences and technology Exchange and superexchange interactions Magnetic properties and materials Magnetically ordered materials: other intrinsic properties Physics
Online-Zugang:	Volltext
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Zusammenfassung:	Effect of additives on the magnetic properties, phase evolution, and microstructure of SmCo6.9Hf0.1M0.1 (M = B, C, Nb, Si, and Ti) ribbons by melt spinning technique under sufficient supercooling condition have been investigated. Among those additives, C is the most effective element in refining the grain size of SmCo6.9Hf0.1M0.1 ribbons, from 100-400 nm for ternary ribbons to 30-100 nm for C-containing ribbons. Besides, C addition also induces extremely fine fcc-Co grains (5-10 nm) in the matrix, resulting in the stronger intergranular exchange coupling effect and the improved magnetic properties. The optimal magnetic properties of Br = 6.9 kG, iHc = 11.8 kOe and (BH)max = 10 MGOe could be achieved for SmCo6.8Hf0.1C0.1 nanocomposite ribbons.
ISSN:	0925-8388 1873-4669
DOI:	10.1016/j.jallcom.2007.04.280