Effect of sub-layer thickness on magnetic and giant magnetoresistance properties of Ni–Fe/Cu/Co/Cu multilayered nanowire arrays  

子层厚度对Ni-Fe/Cu/Co/Cu多层纳米线阵列磁性和巨磁电阻性能的影响（英文）

作　　者：王宏智 黄波 邓华权 李浩晨 张卫国 姚素薇 

机构地区：[1]Sugiyama Laboratory of Surface Technology, School of Chemical Engineering, Tianjin University

出　　处：《Chinese Journal of Chemical Engineering》2015年第7期1231-1235,共5页中国化学工程学报（英文版）

基　　金：Supported by the Natural Science Foundation of Tianjin,China(08JCZDJC17400)

摘　　要：Ni-Fe/Cu/Co/Cu multilayered nanowire arrays were electrodeposited into anodic aluminum oxide template by using dual-bath method at room temperature. Scanning electron microscopy and transmission electron microscopy were used to characterize the morphology and structure of the multilayered nanowire arrays. Vibrating sample magnetometer and physical property measurement system were used to measure their magnetic and giant magnetoresistance （GMR） properties. The effect of sub-layer thickness on the magnetic and GMR properties was investigated. The results indicate that magnetic properties of electmdeposited nanowires are not affected obviously by Cu layer thickness, while magnetic layers （Ni-Fe and Co layers） have significant influence. In addition, GMR ratio presents an oscillatory behavior as Cu layer thickness changes. The magnetic and GMR properties of the multilayered nanowire arrays are optimum at room temperature for the material structure of Ni-Fe （25 nm）/Cu （15 nm）/Co （25 nm）/Cu （15 nm） with 30 deposition cycles.Ni–Fe/Cu/Co/Cu multilayered nanowire arrays were electrodeposited into anodic aluminum oxide template by using dual-bath method at room temperature. Scanning electron microscopy and transmission electron microscopy were used to characterize the morphology and structure of the multilayered nanowire arrays. Vibrating sample magnetometer and physical property measurement system were used to measure their magnetic and giant magnetoresistance(GMR) properties. The effect of sub-layer thickness on the magnetic and GMR properties was investigated. The results indicate that magnetic properties of electrodeposited nanowires are not affected obviously by Cu layer thickness, while magnetic layers(Ni–Fe and Co layers) have signi ficant in fluence. In addition, GMR ratio presents an oscillatory behavior as Cu layer thickness changes. The magnetic and GMR properties of the multilayered nanowire arrays are optimum at room temperature for the material structure of Ni–Fe(25 nm)/Cu(15 nm)/Co(25 nm)/Cu(15 nm) with 30 deposition cycles.

关 键 词：Electrochemistry Ni-Fe/Cu/Co/Cu multilayered nanowires Sub-layer thickness Magnetic property Giant magnetoresistance 

分 类 号：TB383.1[一般工业技术—材料科学与工程]