Magnetic properties of SmCo/sub 7//Co and Sm(Co, Fe)/sub 7///spl alpha/-(Fe, Co) nanocomposite magnets prepared by magnetic anneal

Author

Cui, B.Z. ; Huang, M.Q. ; Liu, S.

Author_Institution

Magnetics Lab., Dayton Univ., OH, USA

fYear

2003

fDate

March 30 2003-April 3 2003

Abstract

In this paper the effect of applying a magnetic field during the crystallization process of mechanically milled SmCo/sub 9.5/ and Sm(Co/sub 0.88/Fe/sub 0.12/)/sub 9.5/ alloys on the nanostructure, exchange coupling, and magnetic properties has been studied. There was a noticeable improvement in the intrinsic coercivity /sub i/H/sub c/, the remanence B/sub r/, and the maximum magnetic energy product (BH)/sub max/ for SmCo/sub 9.5/ and Sm(Co/sub 0.88/Fe/sub 0.12/)/sub 9.5/ alloys annealed in a magnetic field of 10 kOe were obtained. Better rectangularity of demagnetization curves was also observed for SmCo/sub 9.5/ and Sm(Co/sub 0.88/Fe/sub 0.12/)/sub 9.5/ after the annealing treatment.

Keywords

cobalt alloys; coercive force; crystallisation; demagnetisation; exchange interactions (electron); ferromagnetic materials; iron alloys; magnetic annealing; nanocomposites; remanence; samarium alloys; Sm(Co, Fe)/sub 7///spl alpha/-(Fe, Co) nanocomposite magnets; SmCo-Co; SmCo/sub 7//Co nanocomposite magnets; SmCoFe-FeCo; crystallization; demagnetization; intrinsic coercivity; magnetic annealing; magnetic energy; magnetic properties; mechanically milling; nanostructured materials; remanence; Annealing; Demagnetization; Iron; Magnetic properties; Magnets;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2003. INTERMAG 2003. IEEE International

Conference_Location

Boston, MA, USA

Print_ISBN

0-7803-7647-1

Type

conf

DOI

10.1109/INTMAG.2003.1230388

Filename

1230388