The origin of Faraday effect of Ce substituted YIG (Ce:YIG) is discussed with microscopic theory, the formula for Faraday rotation is obtained.

• 主要研究工作及创新性如下：首先根据量子力学理论，从微观角度讨论Ce:YIG薄膜的巨磁光法拉第效应的起源，得到Ce:YIG的法拉第旋转系数的量子力学表达式。