NIMTE OpenIR  > 2018专题
Direct imaging of cross-sectional magnetization reversal in an exchange-biased CoFeB/IrMn bilayer
Hu, Shuai; Pei, Ke; Wang, Baomin; Xia, Weixing; Yang, Huali; Zhan, Qingfeng; Li, Xiaoguang; Liu, Xincai; Li, Run-Wei
2018
Source PublicationPHYSICAL REVIEW B
Volume97Issue:5
AbstractThe exchange coupling between ferromagnetic (FM) and antiferromagnetic materials has been intensely studied for fundamental physics and technological applications in various devices. However, the experimental reported magnitudes of exchange coupling are often smaller than that predicted theoretically, and for which the formation of springlike spin structure in the FM layer has been suggested as the cause. However, investigating the spin structure around the interface of exchange-coupled systems is challenging. Herewe report the direct imaging of the cross-sectionalmagnetization reversal and spin structure at the interface of a model exchange-biased CoFeB/IrMn bilayer by a Lorentz transmission electron microscope with electron holography techniques. Through imaging of in situ magnetization reversal and spin structure at the remanent state, the springlike spin structure (either Bloch-wall-like or Neel-wall-like) in the CoFeB layer has been deduced within subnanometer region of the interface. This result puts a strong constraint on the theories of exchange coupling in inhomogeneous magnetic systems.
KeywordElectron Holography Anisotropy Microscopy Films
Subject AreaScience & Technology - Other Topics ; Materials Science
Language英语
Document Type期刊论文
Identifierhttp://ir.nimte.ac.cn/handle/174433/16803
Collection2018专题
Recommended Citation
GB/T 7714
Hu, Shuai,Pei, Ke,Wang, Baomin,et al. Direct imaging of cross-sectional magnetization reversal in an exchange-biased CoFeB/IrMn bilayer[J]. PHYSICAL REVIEW B,2018,97(5).
APA Hu, Shuai.,Pei, Ke.,Wang, Baomin.,Xia, Weixing.,Yang, Huali.,...&Li, Run-Wei.(2018).Direct imaging of cross-sectional magnetization reversal in an exchange-biased CoFeB/IrMn bilayer.PHYSICAL REVIEW B,97(5).
MLA Hu, Shuai,et al."Direct imaging of cross-sectional magnetization reversal in an exchange-biased CoFeB/IrMn bilayer".PHYSICAL REVIEW B 97.5(2018).
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