Affiliation: | (1) Department of Materials Science and Institute of Materials Science, Jilin University, 130023 Changchun, Peoples Republic of China;(2) State Key Laboratory of Superhard Materials, Jilin University, 130023 Changchun, Peoples Republic of China;(3) Changchun Physics Institute, Chinese Academy of Sciences, 130021 Changchun, Peoples Republic of China |