1. Key Laboratory for Anisotropy and Texture of Materials (MOE) School of Materials Science and Engineering Northeastern University Shenyang 110819 P. R. China
2. Institute of Advanced Magnetic Materials College of Materials and Environmental Engineering Hangzhou Dianzi University Hangzhou 310012 P. R. China
3. School of Science China Pharmaceutical University Nanjing 211198 P. R. China