Co基赫斯勒合金研究进展
Recent Developments in Co-Based Heusler Alloys Research
许铭扬 1李明华 1张垚 1刘沛桥 1李阔 1王东伟 2于广华1
作者信息
- 1. 北京科技大学材料科学与工程学院材料物理与化学系,北京 100083
- 2. 中国科学院纳米标准与检测重点实验室国家纳米科学中心,北京 100190
- 折叠
摘要
Co基赫斯勒合金是一类具有高度有序晶体结构的金属间化合物,其化学组成常用Co2XY表示,其中X为过渡金属元素,Y为主族元素.相比于其他材料,它具有更高的自旋极化率、更高的居里温度以及更低的阻尼因子.基于这些优良特性使得Co基赫斯勒合金在自旋阀、隧道结及半导体自旋场效应管等自旋电子学器件中具有巨大的应用前景.本文回顾了近年来国际上关于Co基赫斯勒合金在垂直磁各向异性和自旋轨道转矩上的研究,从合金成分、微观结构、磁性层的厚度、缓冲层的材料、氧化物层的材料、元素扩散等方面总结了垂直磁各向异性和自旋轨道转矩的影响因素.对垂直磁各向异性和自旋轨道转矩的影响因素的总结有助于更好地理解其深层物理机制以及在未来研究中的挑战与前景.
Abstract
Co-based Heusler alloy is a kind of intermetallic compound with highly ordered crystal structure.Its chemical composition is usually expressed by Co2XY,where X is a transition metal element and Y is a main group element.Compared with other materials,it has higher spin polarizability,higher Curie temperature and lower damping factor.Based on these excellent characteristics,Co-based Heusler alloy has great application prospects in spin valves,tunnel junctions and semiconductor spin field effect transistors.In this paper we reviewed recent international studies on Co-based Heusler alloys on perpendicular magnetic anisotropy and spin-orbit torque.We also summarized the influencing factors of perpendicular magnetic anisotropy and spin-orbit torque from the aspects of alloy composition,microstructure,magnetic layer thickness,buffer layer material,oxide layer material,element diffusion,etc.,which will help us better understand its deep-seated physical mechanism,as well as the challenges and prospects in future research.
关键词
Co基赫斯勒合金/垂直磁各向异性/自旋轨道转矩/影响因素Key words
Co-based Heusler alloy/perpendicular magnetic anisotropy/spin-orbit torque/influencing factors引用本文复制引用
基金项目
国家重点研发计划(2019YFB1309900)
北京市自然科学基金(2182037)
出版年
2024
NETL
NSTL
万方数据