【作者】 杨渭； 蒋正生； 蔡金华； 王敦辉； 都有为； 任兰亭；

【Author】 Yang Wei~(1,2) Jiang Zhengsheng~2 Cai Jinhua~2 Wang Dunhui~2 Du Youwei~2 Ren lanting~1 (1.Department of Physics,Petroleum of University,Dongying,257062,China) (2.National Laboratory of Solid State Microstructures,Nanjing University,Nanjing 210093,China)

【机构】 石油大学物理系； 南京大学固体微结构国家重点实验室；

【摘要】 采用直流离子束共溅射技术,制备了一系列Co_xCu_1-x颗粒膜（6vol.%≤x≤54vol.%）,薄膜厚度约为450nm。在室温下,用极克尔磁光仪测量Co-Cu颗粒膜的极克尔效应,测量的波长范围从400到800nm。当外磁场大小为10kOe并且方向垂直于膜面时,得到最大的克尔角θ_k为0.26°。我们的结果显示在颗粒膜磁光极克尔效应中,钴颗粒的浓度和微结构起重要作用。更多还原

【Abstract】 Granular cobalt films about 450 nm thick and ranging in composition from 6%to 54 vol.%fraction by volume of cobalt have been prepared by co-sputtering cobalt and copper from mosaic target.Polar Kerr rotation spectra of Co-Cu granular films were measured at room temperature in the wavelength region between 400 nm and 800 nm.A maximum Kerr rotation angle(θ_k) of 0.26°was obtained when a magnetic field of 10kOe was applied perpendicular to the film plane.Our results indicate that the density of Co particles and the microstructure between Co particles and Cu matrix may play an important role in the Kerr rotation of granular films.更多还原