[1] Shanxi Normal Univ, Sch Chem & Mat Sci, Key Lab Magnet Mol & Magnet Informat Mat, Minist Educ, Linfen 041004, Shanxi, Peoples R China
[2] Northwest Inst Nonferrous Met Res, Xian 710016, Peoples R China
[3] Xi An Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
[4] Xi An Jiao Tong Univ, Sch Chem Engn & Technol, Xian 710049, Peoples R China
[5] Northwestern Polytech Univ, Xian Inst Flexible Elect, Frontiers Sci Ctr Flexible Elect, Xian 710072, Peoples R China
[6] Northwestern Polytech Univ, Xian Inst Biomed Mat & Engn, Xian 710072, Peoples R China
[7] Univ Washington, Dept Mat & Engn, Seattle, WA 98195 USA