Title :
Precipitation magnetic hardening in NiFe2O4-Mn3O4system
Author :
Sugimoto, Mitsuo
Author_Institution :
The Institute of Physical and Chemical Research, Saitama, Japan
fDate :
9/1/1975 12:00:00 AM
Abstract :
A marked magnetic hardening is observed at room temperature on compositions 35NiFe2O4.65Mn3O4and 30NiFe2O4.70Mn3O4in the binary system NiFe2O4-Mn3O4. From the effects of aging temperature and time upon the magnetic hardening, the measurements of the change of Curie temperature by aging, the results of X-ray and chemical analyses, and microscopic and electron microscopic observations of microstructure, the new findings have been concluded to come from the precipitation of γ-Mn2O3.
Keywords :
Ferrite materials/devices; Magnetic thermal factors; Permanent magnet materials; Aging; Electromagnetic measurements; Ferrites; Magnetic field measurement; Magnetic properties; Powders; Saturation magnetization; Shape measurement; Temperature; Vibration measurement;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1975.1058834
