Phase relations and magnetic properties of MM [CO1-xCux]50 ≤ x ≤ 1 and MM[Co1-xFex]50 ≤ x ≤ 0.3 alloys

Author

Velu, E.M.T. ; Subbarao, E.C. ; Bonda, N.R. ; Gupta, K.P. ; Laha, S. ; Majumdar, A.K. ; Sankar, T.A.Padmavathi ; Pandian, S.

Author_Institution

Indian Institute of Technology, Kanpur, India

Volume

16

Issue

5

fYear

1980

fDate

9/1/1980 12:00:00 AM

Firstpage

997

Lastpage

999

Abstract

A systematic study of the effect of substitution of Cu in MM[Co1-xCux]5 $0 \\leq x \\leq 1$ and Fe in[MM Co1-xFex]5 $0 \\leq x \\leq 0.3$ were made. The Cu substitution for Co gives stable CaCu5type phase in the entire composition range. The lattice parameters $\\underline {a}$ and $\\underline {c}$ of the 1:5 phase increase linearly with increasing Cu content. Fe has only a limited solid solubility in the 1:5 phase. For MM[Co1-xCux]5alloys the $4\\pi M_{s}$ decreased from 95 e.m.u. g^-1at $x=0$ to about 3 e.m.u. g^-1at $x=1$ while for MM[Co1-xFex]5alloys it increased to 101 e.m.u. g^-1at $x=0.1$ . A detailed phase composition of the alloys at 900°C and 700°C and the effect of Cu on the Tcof the 1:5 phase are also reported.

Keywords

Permanent magnet materials; Annealing; Cobalt alloys; Copper alloys; Impurities; Iron alloys; Magnetic properties; Magnetic separation; Matrix decomposition; Microstructure; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.1980.1060860

Filename

1060860