Study of Ni80Fe20/Fe50Mn50 superlattice microstructures by transmission electron microscopy and x—ray diffraction

查看全文 作　　者：MingXu TaoYang GuangmingLuo ZhengqiLu CuixiuLiu NingYang [1]Zhenh 机构地区：[1]InstiruteofPhysics,ChineseAcademyofSciences,POBox603-28,Beijing100080 出　　处：《Beijing Synchrotron Radiation Facility》索引2001年第2期,共9页 摘　　要：The detailed microstructures of Ni80Fe20/Fe50Mn50 superlattices have been characterized using both x-ray diffraction techniques and transmission electron microscopy.The obrivous layered structure,typical column structure and twins which exist in Ni80Fe20/Fe50Mn50 superlattices were observed through performing transmission microscopy.By combining the technique of lowangle x-ray reflectivity(specular and off-specular scans)with the anomalous scattering effect and high-angle x-ray diffraction(using conventional x-ray),wequantitatively analysed the microstructural variation as a function of annealing temperature.It is found that the lateral correlation length,the(111)peak intensity of the superlattices and the average multilayer coherence length all increase with a rise in annealing temperature annealing can decrease the rootmean-square roughness at the interfaces of Ni80Fe20/Fe50Mn50 superlattices.the obtained microstructural knowledge will be helpful in understanding the magnetic properties of the ni80Fe20/Fe50Mn50 exchange bias system. 关 键 词：Ni80Fe20/Fe50Mn50超晶格 X射线衍射分析 微观结构 电子输运