Title :
Structural and magnetic properties of LaFe13-xSix nitrides
Author :
Tang, Z.X. ; Deng, X.H. ; Hadjipanayis, G.C. ; Papaefthymiou, V. ; Sellmyer, David J.
Author_Institution :
Dept. of Phys. & Astron., Delaware Univ., Newark, DE, USA
fDate :
11/1/1993 12:00:00 AM
Abstract :
LaFe13-xSix compounds are found to have two types of crystal structure, i.e., the face-centered cubic NaZn13 -type (x⩽2.4) and the body-centered tetragonal Ce2Ni17Si9-type (3.5⩽x⩽ 5.0). Nitrogenation has a strong effect on the cubic phase, including a large lattice expansion (6.2 to 10.8%), an increase of Curie temperature (52 to 80 K) and spontaneous magnetization (~10%). The tetragonal phase is not significantly affected by the nitrogenation
Keywords :
Curie temperature; crystal atomic structure of alloys; ferromagnetic properties of substances; iron alloys; lanthanum alloys; nitridation; permanent magnets; silicon alloys; spontaneous magnetisation; 52 to 80 K; Curie temperature; LaFe13-xSix nitrides; LaFe13-xSixNy; body-centered tetragonal; crystal structure; cubic phase; face-centered cubic; lattice expansion; magnetic properties; nitrogenation; spontaneous magnetization; tetragonal phase; Annealing; Astronomy; Iron; Lattices; Magnetic properties; Magnetization; Nitrogen; Physics; Temperature; X-ray diffraction;
Journal_Title :
Magnetics, IEEE Transactions on
