摘要：根据铁磁自旋波理论及自旋波与微波辐射的相互作用量子理论，得到计入量子尺寸效应时铁磁超细颗粒的低温磁化强度及磁振子的微波吸收函数。

关键词：铁磁超细颗粒;磁化强度;微波吸收函数;量子尺寸效应;

Abstract：Based on the spin w aves theory of ferromagnets and interaction quantum theory betw een the spin w ave and microw ave radiation，this paper discusses magnetization of the ferromagnetic ultrafine particle in the low temperature case and absoption of microw ave by system of magnon，w hich contains quantum size effects． 

Key words：ferromgnetic ultrafine particle； magnetization；absorbent function；quantum size effect