测量磁织构的一种新方法

A New Method of Measuring the Magnetic Texture

本文提出了一种用转动样品的穆斯堡尔效应测量磁织构的方法。理论分析表明,铁磁材料的非极化^(57)Fe穆斯堡尔谱的取向因子A(即第二峰与第三峰面积之比)包含有描述磁矩取向空间分布的五个独立参数,文中并赋予了各参数的物理意义。用急冷非晶薄带的穆斯堡尔实验结果证实了理论分析的正确性。本方法提供了定量描述磁矩三维择优取向分布的方法和测量参数的实验方法。

A method of measuring the magnetic texture in Mossbauer spectroscopy with rotating sample has been suggested in this paper. The theoretical analysis indicates that the orientation factor A (i. e. the ratio of the areas of the second to the third peak in the. spectrum) of the Mossbauer spectrum of non polarized gamma rays for ^(57)Fe in ferromagnetic material implies five independent parameters which describe the direction distribution of the moments. The physical meanings of these parameters are given as well. The theory has been proved by the experiments in Mossbauer spectroscopy for amorphous ribbons quenched rapidly from the liquid state.This method provides a quantitative description for the distribution of preferred orientation of the moments in three dimensions and a experimental method for measurements of the parameters.