1. State Key Laboratory of Powder Metallurgy, Powder Metallurgy Research Institute, Central South University, Changsha 410083, China
2. Hunan Provincial Key Laboratory of Micro and Nano Materials Interface Science, College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
3. Urumqi Comprehensive Survey Centre of Natural Resources, China Geological Survey, Urumqi 830092, China
4. School of Physics and Electronics, Central South University, Changsha 410083, China
5. Changsha Advanced Materials Industrial Institute Co., Ltd., Changsha 410000, China
6. School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore