Easy directions of magnetization in ternary R2(Co, Fe)17phases

Author

Ray, Alden E. ; Strnat, Karl J.

Author_Institution

University of Dayton, Dayton, Ohio

Volume

8

Issue

3

fYear

1972

fDate

9/1/1972 12:00:00 AM

Firstpage

516

Lastpage

518

Abstract

The magnetocrystalline symmetry and the Curie temperature of six families of quasi-binary rare earth-cobalt-iron intermetallic phases were studied. Investigated were the phases R2(Co1-xFex)17of the light rare-earth elements R = Ce, Pr, Nd, Sm, and Y and also of Ce-rich mischmetal (MM). In the Sm system, the terminal compound Sm2Co17has an easy c axis and the easy-axis symmetry persists up to $x \\approx 0.5$ . The Nd alloys have an easy basal plane for all values of x. In the other systems, small iron substitutions change the easy-plane behavior of the R2Co17to an easy-axis anisotropy. The easy-axis ranges are $x \\approx 0.05$ to 0.45 for Ce, $x \\approx 0.2$ to 0.6 for Pr, $x \\approx 0.1$ to 0.5 for Y, and $x \\approx 0.1$ to 0.45 for MM. The Curie temperatures are high, between 600°C and 940°C, in these ranges. It is concluded that some of the alloys investigated are promising candidate materials for use in improved "rare earth-cobalt" magnets.

Keywords

Cobalt-iron-rare earth alloys; Rare earth-cobalt-iron alloys; Anisotropic magnetoresistance; Intermetallic; Iron; Magnetic anisotropy; Magnetic materials; Magnetization; Magnets; Neodymium; Perpendicular magnetic anisotropy; Temperature distribution;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1972.1067471

Filename

1067471