Zn 0.96 Mn 0.04 O powder and thin films were prepared by standard solid-state reaction processes and radio-frequency (RF) magnetron sputtering. Magnetic measurements indicate that the powder is paramagnetic for temperatures above 3 K, while the thin films annealed in vacuum are ferromagnetic at room temperature with a transition temperature of about 400 K. The largest saturated magnetization (M s ) was found to be about 1.05 B /Mn, while the coercive force was found to be 100 Oe at room temperature. The very …
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