摘要
Revealing the physical nature of vortex wall（VW） behavior in magnetic nanostructures has been of great importance for future device concepts. Here we introduce the superior properties of VW in a notched FeNi nanowire under the action of an electronic current. The pinning-dependent VW propagation is demonstrated by a successive in-field magnetic force microscopy, an anisotropic magnetoresistance measurement, as well as micromagnetics.Based on the developed method, the propagation of VW can be effectively captured by monitoring the change of magnetoresistance in the FeNi nanowire, which sheds light on the development of future spin-based devices.
Revealing the physical nature of vortex wall（VW） behavior in magnetic nanostructures has been of great importance for future device concepts. Here we introduce the superior properties of VW in a notched FeNi nanowire under the action of an electronic current. The pinning-dependent VW propagation is demonstrated by a successive in-field magnetic force microscopy, an anisotropic magnetoresistance measurement, as well as micromagnetics.Based on the developed method, the propagation of VW can be effectively captured by monitoring the change of magnetoresistance in the FeNi nanowire, which sheds light on the development of future spin-based devices.
基金
Supported by the National Natural Science Foundation of China under Grant No 61771092
the Natural Science Foundation of Liaoning Province under Grant No 2015020072
the Fundamental Research Funds for the Central Universities,the Fundamental Research Funds for the Central Universities(No wd01153)
the Technology Foundation for Selected Overseas Chinese
