Ferromagnetism from Co-Doped ZnO Nanocantilevers above Room Temperature

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2008,（12）
• 页码范围: 4446-4448
• 页数: 3页
• 语种: 英文

摘要

At low temperature (400° C), chemical vapour deposition (CVD) is employed to make comb-like Co-doped ZnO nanocantilever arrays (NAs). The magnetization curves of the as-synthesized Co-doped ZnO NAs indicate the existence of above-room-temperature ferromagnetism (ARTFM) (Curie temperature, Tc > 300 K) whereas un-doped ZnO NAs does not. The corresponding ferromagnetic source mechanism is discussed, in which defects play an important role due to the strong green light emission.