金属多层膜中的磁光效应  

MAGNETOOPTICS IN MULTILAYER FILMS

作　　者：翟宏如[1] 苗永智[1] 鹿牧[1] 顾本喜[1] 张胜良 

机构地区：[1]南京大学固体微结构物理国家重点实验室,现代分析中心南京210008

出　　处：《物理学进展》1993年第1期215-228,共14页Progress In Physics

基　　金：国家自然科学基金会;教委博士点基金;中科院磁学开放实验室的资助

摘　　要：本文报导了我们近几年来对薄膜磁光效应方面的主要研究结果。在双层及多层膜中,只要适当地选择层的构成材料及层的厚度,就可能有效地控制薄膜系统的等效光学常数,从而实现从近紫外到近红外光波范围内的极磁光克尔旋转角的增强。发现了几种有较大磁光增强效应的新薄膜材料。在多层膜中,发现了由于层间交换作用和非铁磁层被磁极化所提供的附加磁光效应,使磁光谱发生变化而导至某些波长下磁光效应的增强。The present paper describes the main results of our experimental and theoretical studies on the magnetooptics in layered and multilayer films in recent years. By selecting layer materials and adjusting the layer thicknesses, it is possible to control and reduce the effective optical constants of the layered and multilayer films by various approaches. Enhancement of polar magnetooptical Kerr rotation in layered structures ran be realized in the wavelength range from near IR to near UV. Several bilayer f were found to show large or abnormal enhancement of Kerr rotation. Multilayer films containing transition metal,Pd,Pt and normal metal Cu,Ag layers were studied. Additional magnetoop-tial activities created by the spin polarization of non-ferromagnetic layers caused by in terlayer exchange interaction were observed and discussed. It has been demonstrated that multilayer strustures is a promising approach toward looking for new magnetooptical materials.

关 键 词：金属薄膜 多层膜 磁光效应 薄膜 

分 类 号：O482.55[理学—固体物理]