Title :
Magnetic properties of composite Ba-ferrite particles containing α-Fe
Author :
Kitahata, S. ; Kishimoto, M.
Author_Institution :
Eng. Res. Lab., Hitachi Maxell Ltd., Ibaraki, Japan
fDate :
11/1/1994 12:00:00 AM
Abstract :
Composite Ba-ferrite particles containing α-Fe were made by reducing Co-Ti-Sn substituted Ba-ferrite platelet particles in hydrogen gas. The σs increased monotonically from 55 to 114 emu/g with increasing reduction temperature. Magnetic easy direction of the particles inclined to the plane for the samples with σs larger than 62 emu/g. The α-Fe was considered to be introduced primarily in the S layer in the Ba-ferrite hexagonal structure
Keywords :
barium compounds; composite materials; ferrites; iron; magnetic particles; magnetisation; reduction (chemical); α-Fe; Ba(FeCoTiSn)12O19; BaFe12O19-Fe; Co-Ti-Sn substituted Ba-ferrite platelet particles; Fe; H2; S layer; composite Ba-ferrite particles; hexagonal structure; hydrogen gas; magnetic easy direction; magnetic properties; reduction; saturation magnetization; Crystalline materials; Ferrites; Hydrogen; Magnetic field measurement; Magnetic flux; Magnetic materials; Magnetic properties; Saturation magnetization; Soft magnetic materials; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on
