Electrical Control of Reflectance in La0.5Sr0.5CoO3/CeY2Fe5O12 Oxide Heterostructure

ZHU Yinlong; BI Lei

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Electrical Control of Reflectance in La0.5Sr0.5CoO3/CeY2Fe5O12 Oxide Heterostructure

ZHU Yinlong 1,BI Lei 2 *

1.National Engineering Research Center of Electromagnetic Radiation Control Materials, Chengdu 610054

2. State Key Laboratory of Electronic Thin Films and Integrated Devices, Chengdu 610054

*Correspondence author

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Funding: the Fundamental Research Funds for the Central Universities（No.ZYGX2013J028, ZYGX2014Z001）, the National Research Foundation for the Doctoral Program of Higher Education of China（No.20130185120009）, the Ministry Of Education Program of Introducing Talents of Discipline （No.111 project, B13042）, National Natural Science Foundation of China （No.61475031, 51302027, 51522204）, the Science Foundation for Youths of Sichuan Province（No.2015JQO014）

Opened online: 3 May 2017

Accepted by: none

Citation: ZHU Yinlong,BI Lei.Electrical Control of Reflectance in La0.5Sr0.5CoO3/CeY2Fe5O12 Oxide Heterostructure[OL]. [ 3 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4725815

Electrically controlling materials' properties contributes to extending functions and applications of electronic devices due to introducing a new degree of freedom that can be manipulated by an electric field. Here, the electrical properties, magneto-optical effect, and electric field control of the reflectance in the La0.5Sr0.5CoO3/CeY2Fe5O12 oxide heterostructure have been experimentally investigated and demonstrated. By applying a voltage of ±5 V across the interface at room temperature, the reflectance of the heterostructure can be reversibly modulated by 0.12%. Simultaneously, the electrical resistance and capacitance of the structure were reversibly modified. Oxygen ion migration near the La0.5Sr0.5CoO3/CeY2Fe5O12 interface under the applied electric field is considered to be the mechanism of electric field controlled reflectance in this structure. This work based on electrochemical gating at oxygen level provides a new mechanism to electrically reconfigure the optical properties of magneto-optical devices for integrated photonic device applications.

Keywords:electric field controlled reflectance; electrochemical gating; yttrium iron garnet; integrated photonic device

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