Sensitive materials mainly composed of ZnO and their multi-functional properties were investigated. The temperature extent of linear resistance, non-linear deviation and endurance ability of surge energy were further discussed. The effect of Mg^2+, Al^3+ and Si^4+, which could be solid solutioned in ZnO grain and the function of Y^3+ ion segregated out in grain boundary were studied as well. The function of Ti was analyzed emphatically.
Mengkui WANG, Xiao’an YANG and Fuzhong WANG (Department of Physics, Jinzhou Teachers College, Jinzhou 121003, China) Ke SUN (Department of Physics, Northeastern University, Shenyang 110006, China)
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.
Mengkui WANG (Department of Physics, Jinzhou Teachers College, Jinzhou 121003, China) Junyue WANG (Jinzhou Audio-Visual Education Center, Jinzhou 121000, China) Ke SUN (Department of Physics, Northeastern University, Shenyang 110006, China)
