Room-temperature ferromagnetism induced by Cu vacancies in Cux(Cu2O)1−x granular films*
作者： Xin-Jian Xie , Hao-Bo Li , Wei-Chao Wang , Feng Lu , Hong-Yun Yu
DOI: 10.1088/1674-1056/24/9/097504
关键词:
摘要: CuxCu2O1−x (0.09 ≤ x 1.00) granular films with thickness about 280 nm have been fabricated by direct current reactive magnetron sputtering. The atomic ratio can be controlled the oxygen flow rate during deposition. Room-temperature ferromagnetism (FM) is found in all of samples. saturated magnetization increases at first and then decreases decrease x. photoluminescence spectra show that closely correlated Cu vacancies films. Fundamentally, FM could understood Stoner model based on charge transfer mechanism. These results may provide solid evidence physical insights origin Cu2O-based oxides diluted magnetic semiconductors, especially for systems without intentional atom doping.
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