journal article·2018-04

Some device implications of voltage controlled magnetic anisotropy in Co/Gd2O3 thin films through REDOX chemistry

Guanhua Hao, Nicholas Noviasky, Shi Cao, Ildar Sabirianov, Yuewei Yin, Carolina C. Ilie, Eugene Kirianov, Nishtha Sharma, Andrei Sokolov, Andrew Marshall, Xiaoshan Xu, Peter A. Dowben

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Abstract

Abstract The effect of intermediate interfacial oxidation on the in-plane magnetization of multilayer stack Pt/Co/Gd 2 O 3 , on a p-type silicon substrate, has been investigated by magneto-optical Kerr effect (MOKE) measurements, the anomalous Hall effect, and magnetoresistance measurements. While voltage controlled perpendicular magnetic anisotropy of a metal/oxide heterostructure is known, this heterostructure displays an inverse relationship between voltage and coercivity. The anomalous Hall effect demonstrates a significant change in hysteresis, with the applied bias sign. There is a higher perpendicular magnetic anisotropy with positive bias exposure.
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OpenAlex topics: Magnetic properties of thin films · ZnO doping and properties · Multiferroics and related materials

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