Nonvolatile Electric‐Field Control of Ferromagnetic Resonance and Spin Pumping in Pt/YIG at Room Temperature. (6th February 2019)

• Record Type: Journal Article
• Authors: Yu, Rui; He, Kang; Liu, Qi; Gan, Xucheng; Miao, Bingfeng; Sun, Liang; Du, Jun; Cai, Hongling; Wu, Xiaoshan; Wu, Mingzhong; Ding, Haifeng
• Is Part Of: Advanced Electronic Materials. Volume 5:Number 3(2019)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2019-02-06
• Subjects: magnetic insulators -- magneto‐electric coupling -- pure spin currents; Materials -- Electric properties -- Periodicals; Materials science -- Periodicals; Magnetic materials -- Periodicals; Electronic apparatus and appliances -- Periodicals; 537
• DOI: 10.1002/aelm.201800663
• Languages: English
• ISSNs: 2199-160X

Abstract

Abstract: Electric‐field‐controlled magnetism is of importance in realizing energy efficient, dense and fast information storage and processing. Strain‐mediated converse magneto‐electric (ME) coupling between ferromagnetic and ferroelectric heterostructure shows promise for realizing electric‐controlled magnetism at room temperature and is attracting a number of recent investigations. However, such ME‐effect studies have mainly focus on magnetic metals. In this work, high quality yttrium iron garnet (Y3 Fe5 O12 (YIG)) films are deposited directly onto (100)‐oriented single‐crystal Pb (Mg1/3 Nb2/3 )0.7 Ti0.3 O3 (PMN‐PT) substrates by means of magnetron sputtering. The electric‐field‐induced polarization switching and lattice strain in the PMN‐PT substrate results in two distinct magnetization states in the YIG film that are nonvolatile and electrically reversible. Because of the direct contact between the YIG and the PMN‐PT substrate, an efficient ME coupling and an almost 90° rotation of the easy axis of the YIG film can be realized. Furthermore, the electric‐field‐controlled hysteresis loop‐like ferromagnetic resonance field shifts and spin pumping signals are observed in Pt/YIG/PMN‐PT heterostructures. Thus, the obstacle is overcome via growing high‐quality YIG thin films directly onto PMN‐PT substrates and an efficient manipulation of magnetism and pure spin current transport by electric field is thereby realized. These findings are instructive for future low‐power magnetic insulator‐based spintronic devices. Abstract : Efficient magnetoelectric coupling is realized in magnetic insulating yttrium iron garnet (YIG) film on ferroelectric Pb (Mg1/3 Nb2/3 )0.7 Ti0.3 O3 (PMN‐PT) heterostructure at room temperature. Due to the direct deposition of YIG onto PMN‐PT substrate, an almost 90° rotation of the easy axis of YIG is observed. Nonvolatile electric‐field control of ferromagnetic resonance field and spin pumping voltage in Pt/YIG are also demonstrated.