Jiwei Lou 1, Xiaoming Chen 1, Jiangtao Zeng 1, Dokyun Kim 2, Liaoying Zheng 1, Zhenyong Man 1, Chul Hong Park 2, Guorong Li 1
1 Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences,, Shanghai, China, 2 Department of Physics Education, Pusan National University, Pusan 609735, Pusan, Korea, Republic of (South)