Vijay Sharma - Zn1-xCoxO (x=0.05, 0.10 and 0.15) samples

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  Publication Details (including relevant citation   information): Sharma, VK, Varma, GD, CRYSTAL   RESEARCH AND TECHNOLOGY, 2008, 43  (10), pp 1046-1051

  Abstract: We report on the structural and   magnetic properties of the polycrystalline samples of Zn1-xCoxO   (x = 0.05, 0.10 and 0.15) synthesized via sol-gel route. The air   sintered samples of all compositions exhibit paramagnetic   behaviour at room temperature, on the other hand the same samples   on annealing in Ar/H-2, atmosphere show room temperature   ferromagnetism (RTFM) with enhanced magnetization. The value of   magnetization increases with the Co concentration (x) in both the   air sintered and Ar/H-2 annealed samples. The observed   ferromagnetism in the Ar/H-2 annealed Zn1-xCoxO (x = 0.05, 0.10   and 0.15) samples is attributed to the presence of Co   nanoclusters as detected by XRD and FESEM-EDAX. (C) 2008   WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

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