纳米Fe-In_2O_3颗粒膜中Fe的晶格结构和尺度效应  

LATTICE STRUCTURE AND DIMENSION EFFECT OF Fe IN NANOMETRIC Fe-In_2O_3 GRANULAR FILMS

作　　者：张林[1] 张连生[1] 刘宜华[1] 

机构地区：[1]山东大学物理与微电子学院,济南250100

出　　处：《金属学报》2004年第8期863-866,共4页Acta Metallurgica Sinica

基　　金：国家自然科学基金资助项目 59981004

摘　　要：采用射频溅射法制备了纳米“铁磁金属一半导体基体”Fe-In203颗粒膜,研究了颗粒膜中纳米Fe颗粒的晶格结构和尺度效应.结果表明:Fe-In2O3颗粒膜中纳米Fe颗粒晶格发生畸变,原子间距随颗粒尺寸的减小而增大;纳米Fe颗粒的比饱和磁化强度Ms和Curie温度Tc随颗粒尺寸减小而降低.探讨分析了Fe-In2O3颗粒膜中纳米Fe颗粒的Ms和Tc随颗粒尺寸变化的原因.Nanometric ferromagnetic.metal-semiconductor matrix Fe-In2O3 granular films are fabricated by-the radio frequency sputtering. The lattice structure and dimension effect of the nanometer-sized Fe.particles in granular films have been studied. The result shows that the lattice deformation of the nanometer-sized Fe particles occurs in Fe-In2O3 granular films, which causes the enlargement of the atomic separation of Fe particles with the decrease of particle dimension. The specific saturation magnetization (MS) and Curie temperature (T-C) of the nanometer-sized Fe particles decrease with the decrease of particle dimension, and the causes are explored and analyzed.

关 键 词：纳米Fe-In2O3颗粒膜 晶格畸变 交换作用 磁特性 

分 类 号：TB383[一般工业技术—材料科学与工程]