Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO2 single crystals
Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO2 single crystals
复制标题
Ar离子辐照对未掺杂和Cu掺杂金红石TiO2单晶室温铁磁性的影响
DOI：
10.1088/1674-1056/25/11/116103
复制
发表时间：
2016
影响因子：
1.7
通讯作者：
Bao Liang-Man
中科院分区：
文献类型：
--
作者：
Xu Nan-Nan;Li Gong-Ping;Lin Qiao-Lu;Liu Huan;Bao Liang-Man
Remarkable room-temperature ferromagnetism was observed both in undoped and Cu-doped rutile TiO2 single crystals (SCs). To tune their magnetism, Ar ion irradiation was quantitatively performed on the two crystals in which the saturation magnetizations for the samples were enhanced distinctively. The post-irradiation led to a spongelike layer in the near surface of the Cu-doped TiO2. Meanwhile, a new CuO-like species present in the sample was found to be dissolved after the post-irradiation. Analyzing the magnetization data unambiguously reveals that the experimentally observed ferromagnetism is related to the intrinsic defects rather than the exotic Cu ions, while these ions are directly involved in boosting the absorption in the visible region.
