Co-Ag颗粒膜的磁光克尔效应  

Magneto optical Kerr effect on Co Ag granular films

作　　者：杨渭[1,2] 蒋正生[1,2] 赖鸣远 章建荣[1,2] 都有为[1,2] 

机构地区：[1]南京大学固体微结构国家重点实验室南京大学物理系 [2]南京大学成矿作用国家重点实验室

出　　处：《西北师范大学学报（自然科学版）》1998年第4期33-35,共3页Journal of Northwest Normal University(Natural Science)

基　　金：国家自然科学基金;国家八.五攀登计划资助

摘　　要：用直流离子束共溅射技术溅射ＣｏＡｇ复合靶，制备了一系列Ｃｏ含量不同的颗粒膜，薄膜厚度约为４００ｎｍ，含Ｃｏ的体积比为００３～０８４．在室温下测量了ＣｏＡｇ颗粒膜的极克尔角θｋ的磁光谱，测量的波长范围为４００～８５０ｎｍ．当外磁场大小为１０Ｔ并且方向垂直于膜面时，得到最大的克尔角为０２８°．研究结果显示，在颗粒膜极克旋转中。Granular cobalt films about 400nm thick and ranging in composition from 0 03～0 84 fraction by volume of cobalt have been prepared by co sputtering cobalt and silver from mosaic target.Polar Kerr rotation spectra of Co Ag granular films were measured at room temperature in the wavelength region between 400nm and 850nm.A maximum Kerr rotation angle( θ k)of 0 28° was obtained when a magnetic field of 1 0T was applied perpendicular to the film plane.Our results indicate that the density of Co particles and the microstructure between Co particles and Ag matrix may play an important role in the Kerr rotation of granular films.

关 键 词：磁光效应 颗粒膜 钴银颗粒膜 磁光克尔效应 

分 类 号：O484.43[理学—固体物理] O482.55[理学—物理]