1. MOE Key Lab of New Technology for Non-ferrous Metals and Materials and Guangxi Key Lab of Processing for Nonferrous Metals and Featured Materials, School of Physical Science and Technology, Guangxi University, Nanning 530004, China
2. School of Resources, Environment and Material Science, Guangxi University, Nanning 530004, China
3. Beijing Key Laboratory of Nanophotonics & Ultrafine Optoelectronic Systems, Beijing Institute of Technology, Beijing 100081, China