Abstract
Magnetic properties of Mn-doped ZnO strongly depend on sample preparation and annealing. While the samples sintered in air at 500 °C show ferromagnetism at room temperature, those sintered at 900 °C are paramagnetic. The samples sintered in vacuum show a ferromagnetic transition at 45 K, which is attributed to ferrimagnetic Mn3 O4. With an increase of annealing temperature, the ferromagnetism observed at room temperature in the low-temperature-sintered samples is gradually suppressed and finally completely removed. These results can be understood by considering a metastable ferromagnetic phase and its stability under varying temperatures and atmospheres.
| Original language | English (US) |
|---|---|
| Article number | 10D303 |
| Journal | Journal of Applied Physics |
| Volume | 97 |
| Issue number | 10 |
| DOIs | |
| State | Published - May 15 2005 |
ASJC Scopus subject areas
- Physics and Astronomy(all)
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Zhang, J., Skomski, R., & Sellmyer, D. J. (2005). Sample preparation and annealing effects on the ferromagnetism in Mn-doped ZnO. Journal of Applied Physics, 97(10), [10D303]. https://doi.org/10.1063/1.1845858