[1] East China Normal Univ, State Key Lab Precis Spect, Shanghai 200241, Peoples R China
[2] East China Normal Univ, Sch Phys & Mat Sci, Shanghai 200241, Peoples R China
[3] East China Normal Univ, Dept Elect Engn, Key Lab Polar Mat & Devices MOE, Shanghai 200241, Peoples R China
[4] East China Normal Univ, Dept Elect Engn, Tech Ctr Multifunct Magnetoopt Spect Shanghai, Shanghai 200241, Peoples R China
[5] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, State Key Lab Transducer Technol, Shanghai 200050, Peoples R China
[6] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450052, Peoples R China