We report the first observations of ferromagnetism above room temperature for small atomic percentages of Mn doped in ZnO. In a homogeneous bulk pellet sample sintered at low temperatures (∼500°C) Mn is found to carry an average moment of 0.16μB per Mn ion. We have obtained room temperature ferromagnetic ordering in samples containing around 2% Mn in the form of powder, bulk pellets and 2-3μm thick transparent laser-ablated films. The new capability to fabricate ferromagnetic Mn-doped ZnO semiconductors promises new devices related to spintronic devices as well as magneto-optic components.
|ジャーナル||Journal of Magnetism and Magnetic Materials|
|出版ステータス||Published - 2004 11|
|イベント||International Symposium on Advanced Magnetic Technologies - Taipei, Taiwan, Province of China|
継続期間: 2003 11 13 → 2003 11 16
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics