Vijay Sharma - Effect of Al and Sb doping on the magnetic properties of ZnMnO and ZnCoO

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  Publication Details (including relevant citation   information): Sharma, VK, Varma, GD, JOURNAL OF   APPLIED PHYSICS, 2009, 105 (7), pp   Phys Conf Inc, IEEE, Magnet Soc

  Abstract: The bulk polycrystalline samples with   nominal compositions Zn(0.98-y)(Mn/Co)(0.02) (Al/Sb)(y)O (y = 0,   0.01, and 0.03) have been synthesized via solid state reaction   route. The x-ray diffraction results reveal the presence of   mainly wurtzite structure of pure ZnO in all the Al/Sb codoped   ZnMnO and ZnCoO samples. EDAX results confirm the presence of all   elements in the samples in the stoichiometric ratio. While the   Zn(Mn/Co)O samples show paramagnetic behavior at room   temperature, the Al/Sb codoped ZnMnO samples exhibit room   temperature ferromagnetism (RTFM) with saturation magnetization   (Ms). The M-H curves of Al/Sb codoped ZnCoO samples show almost   linear variation with a small kink at the origin, indicating the   presence of weak ferromagnetism in the Al/Sb codoped ZnCoO   samples. Possible mechanisms of the observed RTFM in Al/Sb   codoped Zn(Mn/Co)O samples are discussed in this paper. (C) 2009   American Institute of Physics. [DOI: 10.1063/1.3059408]

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