Solid state science and technology IV : selected, peer reviewed papers from the 4th International Conference on Solid State Science and Technology, (ICSSST 2012), December 18-20, 2... by International Conference on Solid State Science and Technology (4th : 2012 : Melaka, Malaysia), Huang, Nay Ming, editor, Saadah Abd Rahman, editor, Woon, Kai Lin, editor