Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO_2 single crystals |
| |
| Affiliation: | 1.School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China;2.State Key Laboratory of Crystal Material, Shandong University, Jinan 250001, China;3.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China |
| |
| Abstract: | Remarkable room-temperature ferromagnetism was observed both in undoped and Cu-doped rutile TiO_2 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 TiO_2.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. |
| |
| Keywords: | single-crystal TiO2 Cu ion implantation Ar ion irradiation/post-irradiation room-temperature ferromagnetism |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国物理 B》浏览原始摘要信息 |
|
点击此处可从《中国物理 B》下载免费的PDF全文 |
|
