DocumentCode
820850
Title
57Fe Mossbauer investigation of R2(Fe1-x Cox)17Ny (R =rare earth, x ⩽0.4, y ⩽2.2)
Author
Ardisson, J.D. ; Bogé, M. ; Persiano, A.I.C. ; Colucci, C.C. ; Gama, S.
Author_Institution
Dept. de Fisica, Univ. Federal do Minas Gerais, Brazil
Volume
28
Issue
5
fYear
1992
fDate
9/1/1992 12:00:00 AM
Firstpage
2584
Lastpage
2586
Abstract
The effects of different contents of nitrogen in both Pr2 Fe17 and Nd2Fe17 and of cobalt in both Nd2Fe17 and Nd2Fe17N 2.2 are investigated by means of Mossbauer spectroscopy and thermal magnetic analysis. The results confirm that either nitrogen or cobalt increases the hyperfine field (B hf) as well as the Curie temperature (T c) of the material. The hyperfine parameters for nominal contents of nitrogen above y =1.5 are the same as those observed in fully nitrided samples. The data also reveal that the combination of N and Co produces an additional increase of T c. The same behavior is observed in B hf of Nd2(Fe1-xCo x)17N2.2 in the range 0<x <0 0.1. After a restricted maximum at x ≃0.02-0.05, B hf decreases with increasing x
Keywords
Curie temperature; Mossbauer effect; cobalt alloys; crystal hyperfine field interactions; ferromagnetic properties of substances; iron alloys; neodymium alloys; nitridation; permanent magnets; praseodymium alloys; Curie temperature; Mossbauer spectroscopy; Nd2(Fe1-xCox)17N y; Pr2(Fe1-xCox)17N y; arc melting; thermal magnetic analysis; Anisotropic magnetoresistance; Earth; Iron; Lattices; Magnetic materials; Magnetization; Neodymium; Nitrogen; Paramagnetic materials; Permanent magnets;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/20.179564
Filename
179564
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