Studies on the Relation between the Composition of Thermal Sensitive MnZn Ferrite and Curie Temperature

摘要

Thermal sensitive MnZn ferrite is a kind of soft magnetic ferrite material with lower Curie temperature （Tc） and can be used to make many kinds of magnetic thermal sensitive sensors with high sensitivity. In this paper, the relation between the composition of thermal sensitive ferrite and Tc was studied. It was found that Tc changes linearly with ZnO extent when the content of Fe2O3 is fixed. Based on lots of experiments, an experimential formula to determine Tc was given out.