Title :
Mn-Zn ferrite with MoO3 and other oxide additives
Author :
Ono, K. ; Fukunaga, S. ; Matsuo, Y.
Author_Institution :
FDK Corp., Shizuoka, Japan
fDate :
9/1/1999 12:00:00 AM
Abstract :
We studied the effects of mixing a high-permeability Mn-Zn ferrite with two different additives simultaneously-MoO3 (known to promote grain growth) and another oxide having a low melting point. We found that, paired with MoO3, V2O5 had an effect of speeding up ferrite shrinkage, thereby enabling the sintering of ferrites in a shorter time or at a lower temperature. Similarly coupled with MoO3, PbO had an effect of increasing the ferrite shrinkage rate, resulting in a higher permeability of the ferrite with an initial-permeability measurement of 25,500
Keywords :
ferrites; magnetic permeability; manganese compounds; molybdenum compounds; sintering; zinc compounds; (MnZn)Fe2O4:MoO3; Mn-Zn ferrite; MoO3; PbO; V2O5; ferrite shrinkage; grain growth; high-permeability; oxide additives; sintering; Atmosphere; Ball milling; Crystal microstructure; Crystallization; Ferrites; Heating; Nitrogen; Permeability; Powders; Temperature;
Journal_Title :
Magnetics, IEEE Transactions on