1. School of Material Science and Engineering Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology Hebei University of Technology Tianjin 300130 P. R. China
2. Key Laboratory of Materials Physics of Ministry of Education School of Physics Zhengzhou University Zhengzhou 450001 P. R. China
3. School of Chemical Engineering Hebei University of Technology Tianjin 300130 P. R. China
4. Center for High Pressure Science and Technology Advanced Research Beijing 100094 P. R. China
5. Beijing National Laboratory of Molecular Science Beijing Key Laboratory of Magnetoelectric Materials and Devices College of Chemistry and Molecular Engineering Peking University Beijing 100871 P. R. China