Mechanically alloyed Sm-Fe-N magnets with addition of Ga

E. Vasilyeva , D. Januszewski , Marcin Leonowicz

Abstract

The magnetic properties and microstructure of Sm-Fe-N magnets with addition of Ga were studied. It was found that the coercivity initially increased and than decreased when Ga content exceeded 0.5 at\%. Ga substituted Fe in the lattice of Sm2Fe17 phase and formed a (Sm,Ga)-rich phase at grain boundaries. Deterioration of the magnetic properties, for Ga contents above 0.5 at\%, we attribute to a reduced nitrogen solubility in the lattice of the Sm2(Fe,Ga) 17Nx phase and towering of its anisotropy constants
Author E. Vasilyeva - [Politechnika Warszawska]
E. Vasilyeva,,
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, D. Januszewski - [Warsaw University of Technology (PW)]
D. Januszewski,,
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- Politechnika Warszawska
, Marcin Leonowicz (FMSE / DCFM)
Marcin Leonowicz,,
- Division of Construction and Functional Materials
Journal seriesIEEE Transactions on Magnetics, ISSN 0018-9464
Issue year1997
Vol33
No5
Pages3853-3855
Keywords in Englishalloying additions, Anisotropic magnetoresistance, anisotropy constants, coercive force, Coercivity, Curie temperature, ferromagnetic materials, Ga addition effect, gallium alloys, grain boundaries, iron, iron alloys, lattice constants, Lattice parameters, Lattices, magnetic anisotropy, magnetic properties, Magnets, Mechanical alloying, mechanically alloyed Sm-Fe-N magnets, Microstructure, nitrogen, permanent magnets, Powder metallurgy, reduced N solubility, remanence, samarium alloys, Sm2Fe17 phase, Sm2(FeGa)17N, (Sm,Ga)-rich phase, solid solubility, X-ray diffraction
ASJC Classification2208 Electrical and Electronic Engineering; 2504 Electronic, Optical and Magnetic Materials
DOIDOI:10.1109/20.619593
Score (nominal)25
Score sourcejournalList
Publication indicators Scopus Citations = 3; WoS Citations = 3; GS Citations = 3.0; Scopus SNIP (Source Normalised Impact per Paper): 1999 = 1.242; WoS Impact Factor: 2006 = 0.938 (2) - 2007=1.004 (5)
Citation count*3 (2015-04-25)
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