Structural and Magnetic Studies of Zn0.95Co0.05O and Zn0.90Co0.05Al0.05O
Murtaza Saleem1**, Saadat A. Siddiqi1,2, Shahid Atiq1, M. Sabieh Anwar3
1Centre of Excellence in Solid State Physics, University of the Punjab, Quaid-e-Azam Campus, Lahore-54590, Pakistan 2Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Defence Road, Off Raiwind Road, Lahore, Pakistan 3 School of Science and Engineering (SSE), Lahore University of Management Sciences (LUMS), Opposite Sector U, D.H.A. Lahore-54792, Pakistan
Structural and Magnetic Studies of Zn0.95Co0.05O and Zn0.90Co0.05Al0.05O
Murtaza Saleem1**, Saadat A. Siddiqi1,2, Shahid Atiq1, M. Sabieh Anwar3
1Centre of Excellence in Solid State Physics, University of the Punjab, Quaid-e-Azam Campus, Lahore-54590, Pakistan 2Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS Institute of Information Technology, Defence Road, Off Raiwind Road, Lahore, Pakistan 3 School of Science and Engineering (SSE), Lahore University of Management Sciences (LUMS), Opposite Sector U, D.H.A. Lahore-54792, Pakistan
摘要Single-phase Zn0.95Co0.05O and Zn0.90Co0.05Al0.05O samples were prepared by a novel combustion method. X-ray diffraction studies exhibit the pure phase wurtzite structure of doped ZnO. Energy dispersive x-ray analysis confirms the incorporation of dopants into the host material. Scanning electron microscopy shows the ordered morphology in both of the samples. Temperature-dependent resistivity analysis describes the expected semiconducting behavior that is similar to the parent ZnO materials. Room-temperature magnetic measurements reveal the absence of ferromagnetism in Co-doped ZnO, while the Co and Al co-doped sample displays apparent room-temperature ferromagnetic behavior. The decrease of resistivity and presence of ferromagnetic behavior in Al-doped ZnCoO system corroborate the significant role of free carriers.
Abstract：Single-phase Zn0.95Co0.05O and Zn0.90Co0.05Al0.05O samples were prepared by a novel combustion method. X-ray diffraction studies exhibit the pure phase wurtzite structure of doped ZnO. Energy dispersive x-ray analysis confirms the incorporation of dopants into the host material. Scanning electron microscopy shows the ordered morphology in both of the samples. Temperature-dependent resistivity analysis describes the expected semiconducting behavior that is similar to the parent ZnO materials. Room-temperature magnetic measurements reveal the absence of ferromagnetism in Co-doped ZnO, while the Co and Al co-doped sample displays apparent room-temperature ferromagnetic behavior. The decrease of resistivity and presence of ferromagnetic behavior in Al-doped ZnCoO system corroborate the significant role of free carriers.
Murtaza Saleem**;Saadat A. Siddiqi;Shahid Atiq;M. Sabieh Anwar
. Structural and Magnetic Studies of Zn0.95Co0.05O and Zn0.90Co0.05Al0.05O[J]. 中国物理快报, 2011, 28(11): 116103-116103.
Murtaza Saleem**, Saadat A. Siddiqi, Shahid Atiq, M. Sabieh Anwar
. Structural and Magnetic Studies of Zn0.95Co0.05O and Zn0.90Co0.05Al0.05O. Chin. Phys. Lett., 2011, 28(11): 116103-116103.
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