首页|Solar manipulations of perpendicular magnetic anisotropy for flexible spintronics
Solar manipulations of perpendicular magnetic anisotropy for flexible spintronics
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Flexible electronics/spintronics attracts researchers'attention for their application potential abroad in wearable devices,healthcare,and other areas.Those devices'performance(speed,energy consumption)is highly dependent on manipulating information bits(spin-orientation in flexible spintronics).In this work,we established an organic photovoltaic(OPV)/ZnO/Pt/Co/Pt heterostructure on flexible PET substrates with perpendicu-lar magnetic anisotropy(PMA).Under sunlight illumination,the photo-electrons generated from the OPV layer transfer into the PMA heterostructure,then they reduce the PMA strength by enhancing the interfacial Rashba field accordingly.The coercive field(Hc)reduces from 800 Oe to 500 Oe at its maximum,and the magnetization can be switched up and down reversibly.The stability of sunlight control of magnetization reversal under various bending conditions is also tested for flexible spin-tronic applications.Lastly,the voltage output of sunlight-driven PMA is achieved in our prototype device,exhibiting an excellent angular depen-dence and opening a door towards solar-driven flexible spintronics with much lower energy consumption.
interfacial magnetoelectric couplingperpendicular magnetic anisotropydeterministic magnetization reversalphotovoltaic control of magnetism
State Key Laboratory for Manufacturing Systems Engineering,Electronic Materials Research Laboratory,Key Laboratory of the Ministry of Education & International Center for Dielectric Research,School of Electronic Science and Engineering,The International Joint Laboratory for Micro/Nano Manufacturing and Measurement Technology,Xi'an Jiaotong University,Xi'an 710049,China
School of Materials Science & Engineering,Changzhou University,Changzhou 213164,China
National Key R&D Program of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaChina Postdoctoral Science Foundation