MgZnフェライトのインダクタンスの温度依存性 Temperature Dependence of Inductance of MgZn Ferrite
Temperature dependence of inductance of MgZn ferrites has been investigated with reference to chemical compositions, amount of Fe<SUP>2+</SUP> and microstructures. The dependence is strongly affected by ferrite composition, and maximum of inductance change is observed in stoichiometric composition. It was thought that the origin of composition dependence attributed to crystalline magnetic anisotropy (K<SUB>1</SUB>). In general, the ferrous ion..gives a positive contribution to K<SUB>1</SUB>. Relationship between Fe<SUP>2+</SUP> and inductance change, however, can not be correlated in MgZn ferrites. Furthermore, grain size has less effect on the inductance change.<BR>Inductance change is well correlated with between the number of etch pit and temperature dependence of inductance change. This result suggests that dislocations exist in the grain.
粉体および粉末冶金 43(8), 972-977, 1996-08-15
Japan Society of Powder and Powder Metallurgy