自旋波线宽的测量

本文描述了磁有序材料在垂直激励和平行激励下产生第一阶非稳定性微波阈值磁场的测试装置及有关测试技术,在平行激励下通过阈值场的测量可以获得自旋波线宽,同时给出了在室温、X波段条件下对YIG单晶小球进行自旋波线宽测量的结果,与同类测量进行比较,两者相当一致。 关键词：

MEASUREMENT OF SPIN WAVE LINEWIDTH

In this paper, we describe the instrumentation and technique which are suitable for measuring first-Order instability threshold values of microwave field for both configurations of perpendicular and parallel pumping in magnetic order materials. The spin wave linewidth is derived from instability threshold values for parallel pumping. Experimental results are given for a sphere of yttrium iron garnet at room temperature and x-band. These results are in good agreement with those obtained by other researchers.