Vijay Sharma - ZnO

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      Publication Details (including relevant citation   information): Sharma, VK, Najim, M, Varma, GD,   JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS,   2011, 323 (24), pp 3198-3201

      Abstract: We report the systematic study on the   effect of C-doping and annealing atmosphere (air, O(2), N(2) and   Ar) on the magnetic properties of pure ZnO as well as   Zn(0.98)Mn(0.02)O (ZMO). We found diamagnetic behavior for pure   ZnO samples in all the annealing atmospheres whereas all ZMO   samples are paramagnetic except the one, which is annealed in   argon. While maintaining the same annealing atmospheres and   varying the C content we found that on increasing the C-doping   concentration the ferromagnetic fraction in the sample increases.   The observed RTFM in C-doped ZMO is possibly due to carriers   introduced into the samples due to oxygen vacancies and the   substitution of C at O sites. (C) 2011 Elsevier B.V. All rights   reserved.

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