1. N. Zhao, Y. Zhong, M.L. Huang, H.T. Ma, X.P. Liu, Acta. Phys. Sin. 64, 166601 (2015)
2. H.Y. Hsiao, C.M. Liu, H.W. Lin, T.C. Liu, C.L. Lu, Y.S. Huang, C. Chen, K.N. Tu, Science 336, 1007 (2012)
3. A. Kunwar, H.R. Ma, H.T. Ma, B.F. Guo, Z.X. Meng, N. Zhao, M.L. Huang, J. Mater. Sci. 27, 7699 (2016)
4. N. Zhao, M.L. Huang, Y. Zhong, H.T. Ma, X.M. Pan, J. Mater. Sci. 26, 345 (2015)
5. O. Saliza Azlina, A. Astuty, I. Siti Rabiatull Aisha, Adv. Mater. Res. 845, 76 (2014)