Vijay Sharma - Mn-doped ZnO

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  Publication Details (including relevant citation   information): Sharma, VK, Varma, GD, JOURNAL OF   APPLIED PHYSICS, 2007, 102 (5)

  Abstract: We report room temperature   ferromagnetism (RTFM) in the hydrogenated bulk samples of   Zn0.98Mn0.02O synthesized via standard solid state reaction   route. The effect of hydrogenation time (t(H)) on the structural   and magnetic properties of the samples has been explored.   Magnetic measurements show that the samples synthesized by   sintering in air at similar to 800 degrees C exhibit paramagnetic   behavior and the same samples on annealing in a gaseous mixture   of argon (90%) and hydrogen (10%) at similar to 800 degrees C   become ferromagnetic at room temperature. Based on the structural   and magnetic properties of the samples, it is argued that RTFM in   the hydrogenated samples originates from the oxygen vacancies and   some defects at Zn sites. (C) 2007 American Institute of Physics.

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