DocumentCode
897276
Title
High coercivity in Sm(FeT)12 type magnets
Author
Strzeszewski, J. ; Wang, Y.Z. ; Singleton, E.W. ; Hadjipanayis, G.C.
Author_Institution
Dept. of Phys., Kansas State Univ., Manhattan, KS, USA
Volume
25
Issue
5
fYear
1989
fDate
9/1/1989 12:00:00 AM
Firstpage
3309
Lastpage
3311
Abstract
The magnetic properties and microstructure of melt-spun iron-rich ternary alloys with the ThMn12-type structure are reported. Rapidly quenched samples were prepared with composition SmxFe yTz, where T=Ti, V, Mo, Cu, Al, Si or a mixture of these, and 8<x<20, 76<y<89, and 6<z<12. Some samples has small amounts of B or C added. The results of X-ray diffraction, electron microscopy, and thermomagnetic measurements showed that the crystallized alloys have the ThMn12-type structure when annealed above 800°C. For lower annealing temperatures, some alloys have the TbCu7-type structure. The maximum coercivity obtained was 7.7 kOe, and several samples with composition Sm-Fe-Ti-B and Sm-Fe-Ti-(Si,Al) had H c>6.5 kOe
Keywords
coercive force; ferromagnetic properties of substances; iron alloys; samarium alloys; 800 C; Sm(FeAl)12; Sm(FeCu)12; Sm(FeMo)12; Sm(FeSi)12; Sm(FeTi)12; Sm(FeV)12; TbCu7-type structure; ThMn12-type structure; X-ray diffraction; annealing; crystallized alloys; electron microscopy; magnetic properties; microstructure; rapid quenching; thermomagnetic measurements; Amorphous materials; Annealing; Boron; Coercive force; Crystallization; Grain size; Magnets; Optical microscopy; Temperature dependence; X-ray diffraction;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.42287
Filename
42287
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