摘要
In this paper Jiles-Atherton (J-A) model has been implemented in order to simulate the magnetic hysteresis loops of magnetoelectric composite samples containing cobalt ferrite and barium titanate ((BaTiO3) (x) (CoFe2O4)(1-x) having x = 0.8, 0.6, and 0.4) sintered at four temperatures 1,000 A degrees C, 1,050 A degrees C, 1,100 A degrees C, and 1,150 A degrees C. In each case the J-A parameters are calculated. The dynamic of these parameters has been correlated with the microstructure of the samples and the ratio of the concentrations of the two phases (magnetostrictive/piezoelectric). Concomitantly with it the remanent magnetization, the saturation magnetization and the coercive field's dependences on the magnetic phase's concentration have been studied. The dependence of the J-A model parameters on sintering temperature have been analyzed.
- 出版日期2012-4