[Liu, Xuan; Lin, Sheng; Chen, Xun; Zhang, Gen-Fa; Chen, X] Univ South China, Sch Nucl Sci & Technol, Hengyang 421001, Peoples R China.
[Chen, Xun; Chen, X] Cent China Normal Univ, Key Lab Quark & Lepton Phys MOE, Wuhan 430079, Peoples R China.
[Zhou, Jing; Zhou, J] Hunan City Univ, Dept Phys, Yiyang 413000, Hunan, Peoples R China.
[Zhou, Jing; Zhou, J] Hunan City Univ, Key Lab Hunan Prov, Solid State Energy Storage Mat & Devices, Yiyang 413000, Peoples R China.