Title :
Magnetic properties of Ce2Fe17-xAlx(Ny) compounds
Author :
Middleton, D.P. ; Buschow, KH J.
Author_Institution :
Philips Res. Lab., Eindhoven, Netherlands
fDate :
3/1/1994 12:00:00 AM
Abstract :
We have studied the magnetic properties of the rhombohedral Ce2Fe17-xAlx(Ny) compounds. Aluminum substitution in Ce2Fe17 leads to ferromagnetism for medium Al concentration and to cluster glasses for high Al concentration. The Curie temperature shows a maximum. Rare-earth nitrides of the composition Ce2Fe17-xAlxNy can be prepared by the reaction of Ce2Fe17-xAlxNy with nitrogen gas at 500°C. The crystal structure and lattice constants have been determined for all compounds. The Curie temperature enhances upon nitrogenation. The nitrogen absorption capacity decreases with composition x and vanishes for x>5. The enhancement of the Curie temperature of the nitrides decreases according to the absorption capacity
Keywords :
Curie temperature; aluminium alloys; cerium alloys; crystal atomic structure of alloys; ferromagnetic properties of substances; iron alloys; sorption; 600 C; Ce2(FeAl)17N; Ce2Fe17; Curie temperature; aluminum substitution; cluster glasses; crystal structure; ferromagnetism; lattice constants; magnetic properties; nitrogen absorption capacity; nitrogen gas reaction; nitrogenation; preparation; rare-earth nitrides; rhombohedral Ce2Fe17-xAlx(Ny) compounds; Aluminum; Cerium; Iron; Lattices; Magnetic materials; Magnetic properties; Nitrogen; Permanent magnets; Saturation magnetization; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
