[Wang, Shiliang; Kuang, Daitao; Deng, Lianwen; Luo, Heng] Cent South Univ, Sch Phys & Elect, Changsha 410083, Peoples R China.
[Kuang, Daitao; Song, Min; Luo, Heng] Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China.
[Hou, Lizhen] Hunan Normal Univ, Sch Phys & Elect, Changsha 410081, Peoples R China.
[Chen, Chuansheng] Changsha Univ Sci & Technol, Coll Mat Sci & Engn, Changsha 410114, Peoples R China.
[Huang, Han; Mead, James L.] Univ Queensland, Sch Mech & Min Engn, Brisbane, Qld 4072, Australia.