基于MATLAB的铁磁材料居里点的测定实验数据处理

Application of MATLAB in Ferromagnetic Materials Curie Point Experimental Data Processing

精确地找出ε～T关系曲线中斜率最小处是减小铁磁材料居里点的测定实验误差的关键。通过用待定系数法求出感应电动势随温度发生突变附近的曲线方程,再对曲线方程求导,得出斜率极小值点,从而确定切线方程。同时,利用高效的MATLAB计算语言处理计算过程中的数据,使复杂的数学运算变简单。

Pinpoint slope ε～T curve is the key to reducing the minimum in ferromagnetic materials Curie point determination experiment error. The induced electromotive force with temperature near the mutation curve equation is calculated by using the undetermined eoefficient method, and then the derivation of the curve equation is obtained s so as to determine the tangent equation. At the same time, the calculation of language processing in the process of calculation data by using efficient MATLAB makes the complex mathematical operation simple.