离子辐照对材料磁性的调控及其应用  

Ion irradiation modulated magnetic properties of materials and its applications

作　　者：郭玺 左亚路[1] 崔宝山 申铁龙[2] 盛彦斌[2] 席力 Guo Xi;Zuo Ya-Lu;Cui Bao-Shan;Shen Tie-Long;Sheng Yan-Bin;Xi Li(School of Physical Science and Technology,Lanzhou University,Lanzhou 730000;Institute of Modern Physics,Chinese Academy of Sciences,Lanzhou 730000)

机构地区：[1]兰州大学物理科学与技术学院,兰州730000 [2]中国科学院近代物理研究所,兰州730000

出　　处：《物理学报》2024年第13期28-43,共16页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:51671098);甘肃省自然科学基金(批准号:22JR5RA474)资助的课题。

摘　　要：离子辐照技术具有离子束能量密度高、实验条件可精确控制,且不受化学剂量比影响的特点,利用离子束辐照材料,可实现定向掺杂,或精确引入和调控现缺陷位和密度等优势,因此在多个领域,如材料改性、芯片制造、生物医学、能源及化工领域都得到了广泛应用.尤其在磁性材料改性领域,该技术能够通过细致控制离子束的能量、剂量和辐照方向,实现对磁性材料的定制化性能优化.为进一步提升磁性材料的性能并探索新的磁性器件,本文深入地探讨了离子辐照如何精确调制各种磁相互作用,并分析其对自旋霍尔效应和磁结构动力学的影响.首先着重介绍了离子辐照在调控垂直磁各向异性、交换偏置及RKKY相互作用等磁性特征方面的最新研究成果.这些调控手段对于理解和优化磁性材料的微观结构和性质至关重要.接着,本文详细地探讨了离子辐照在调控自旋轨道力矩器件中的重要作用.这些应用展示了离子辐照技术在设计高性能磁性存储和处理器件方面的潜力.最后,还讨论了辐照离子种类、能量、剂量、辐照面积等参数对磁斯格明子成核位置、密度、尺寸、稳定性以及磁斯格明子霍尔效应的调控作用,阐明了离子辐照改变磁斯格明子生成、湮灭、运动规律等方面的内在机理,为制备基于磁斯格明子运动的低功耗存储器件提供新的途径.此外,本文还就离子辐照技术在未来多功能磁性传感器及信息存储磁介质制备方面的可能应用进行了前瞻性分析.离子辐照技术为磁性材料的性能调控和应用扩展提供了新的可能性.随着研究的深入,这项技术有望在未来的材料科学、电子器件以及信息技术等多个领域发挥更大的作用.Ion irradiation,a technology in which ion beams are used to irradiate materials,has high manipulation precision,short processing time,and many applications in the fields of material modification,chip manufacturing,biomedicine,energy and chemicals.Especially in magnetic material modification,customized modifications of magnetic materials can be achieved by precisely controlling the energy,dose,and direction of the ion beam.To further enhance the performances of magnetic materials and explore new magnetic devices,this study focuses on how ion irradiation precisely modulates various magnetic interactions and the analysis of its influence on the spin Hall effect and magnetic structural dynamics.Firstly,the latest research achievements are emphasized of ion irradiation regulated magnetic characteristics such as perpendicular magnetic anisotropy,exchange bias,and RKKY interaction.These regulation methods are crucial for understanding and optimizing the microstructure and properties of magnetic materials.Secondly,the significant role played by ion irradiation in regulating spin-orbit torque devices is discussed in detail.These applications demonstrate the potential of ion irradiation technology in designing high-performance magnetic storage and processing devices.Finally,the future applications of ion irradiation technology in the preparation of multifunctional magnetic sensors and magnetic media for information storage are discussed,highlighting its great enormous innovation and application potential in the field of magnetic materials.

关 键 词：离子辐照 磁相互作用能 自旋轨道力矩 磁斯格明子 

分 类 号：TM271[一般工业技术—材料科学与工程]