Title :
Electronic magnetic after-effects in BaO-nFe2O3 ferrites at low temperatures
Author :
Cabido, J. I Lopez ; Martinez, D. ; Rivas, J. ; Walz, F.
Author_Institution :
Dept. de Fisica Aplicada, Fac. de Fisica, Santiago de Compostela, Spain
fDate :
9/1/1990 12:00:00 AM
Abstract :
The authors report on investigation of magnetic aftereffects in ceramic BaO.-nFe2O3 ferrites up to 300 K in the time and frequency domains. The relaxation phenomena observed below the Verwey temperature are identified with electronic processes which have been found in magnetite. These relaxation phenomena strongly depend on the concentration of barium ions and on the firing and cooling gas atmosphere conditions used in the sintering of the ferrites
Keywords :
barium compounds; ferrites; magnetic aftereffect; magnetic relaxation; BaO-Fe2O3; Verwey temperature; ceramic; ferrites; magnetic aftereffects; magnetite; relaxation phenomena; sintering; Barium; Ceramics; Ferrites; Frequency domain analysis; Magnetic domains; Magnetic separation; Permeability measurement; Temperature; Time measurement; Toroidal magnetic fields;
Journal_Title :
Magnetics, IEEE Transactions on
