Atomic-scale engineering of oxide interfaces yields a new family of synthetic magnetic structures  

作　　者：David L.Cortie Xiaolin Wang 

机构地区：[1]ARC Centre of Excellence in Future Low-Energy Electronics Technologies,University of Wollongong,North WoUongong,NSW 2522,Australia [2]The Institute for Superconducting and Electronic Materials,Australian Institute for Innovative Materials,University of Wollongong North Wollongong,NSW 2522,Australia

出　　处：《Science Bulletin》2017年第17期1169-1170,共2页科学通报（英文版）

摘　　要：A grand challenge in the field of magnetism is to find material systems that exhibit spin structures ranging from simple ferromagnets to exquisite non-collinear states.In bulk three-dimensional(3D)materials,however,the magnetic exchange interactions are constrained by the crystal symmetry and quantum chemistry,making it challenging to adjust the intrinsic magnetic structure.AA grand challenge in the field of magnetism is to find material systems that exhibit spin structures ranging from simple ferromag- nets to exquisite non-collinear states. In bulk three-dimensional （3D） materials, however, the magnetic exchange interactions are constrained by the crystal symmetry and quantum chemistry, mak- ing it challenging to adjust the intrinsic magnetic structure. A major advance for the custom-design of spin structures was the discovery that the exchange interaction can be fine-tuned in nanoscale thin film multilayers to produce either ferromagnetic （FM） or antiferro- magnetic （AF） interactions. This effect, known as interlayer exchange coupling （IEC）, is adjustable using a thin nonmagnetic spacer layer interleaved between two magnetic layers. The first indisputable experimental evidence of this magnetic coupling was demonstrated in the 1980＇s using metallic Fe/Cr and rare-earth based multilayers [1]. The ability to engineer the exchange interac- tion introduced an unprecedented level of control to produce nanostructures known as synthetic antiferromagnets （Fig. 1）. Ulti- mately, this led to the discovery of novel transport and spintronic phenomena culminating in the 2007 Nobel Prize （https：//www.no- belprize.org/nobel_prizes/physics/laureates/2007）.

关 键 词：铁磁性 工程师 原子尺度 合成 结构族 氧化物 交换相互作用 界面 

分 类 号：O441.2[理学—电磁学]