Dynamic in situ visualization of voltage-driven magnetic domain evolution in multiferroic heterostructures. (27th November 2015)

• Record Type: Journal Article
• Authors: Gao, Ya; Hu, Jia-Mian; Wu, Liang; Nan, C W
• Is Part Of: Journal of physics. Volume 27:Number 50(2015)
• Publication Date: 2015-11-27
• Subjects: magnetic domain evolution -- voltage-control-of magnetism -- Ni/PMN-PT heterostructure; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/0953-8984/27/50/504005
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: Voltage control of magnetism in multiferroic heterostructures provides a promising solution to the excessive heating in spintronic devices. Direct observation of voltage-modulated magnetic domain evolution dynamics is desirable for studying the mechanism of the voltage control of magnetism at mesoscale, but has remained challenging. Here we explored a characterization method for the dynamic in situ evolution of pure voltage modulated magnetic domains in the heterostructures by employing the scanning Kerr microscopy function in the magneto optic Kerr effect system. The local magnetization reorientation of a Ni/PMN-PT heterostructure were characterized under sweeping applied voltage on the PMN-PT single crystal, and the results show that the magnetization rotation angle in the local regions is much greater than that obtained from macroscopic magnetization hysteresis loops.