Effect of Ar ion irradiation on the room temperature ferromagnetism of undoped and Cu-doped rutile TiO 2 single crystals
| Autor: | Q. L. Lin, Huan Liu, Nan-Nan Xu, Liang-Man Bao, Gong-Ping Li |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Magnetism Analytical chemistry General Physics and Astronomy 02 engineering and technology Cu doped 021001 nanoscience & nanotechnology 01 natural sciences Ion Condensed Matter::Materials Science Magnetization Ferromagnetism Rutile Condensed Matter::Superconductivity 0103 physical sciences Condensed Matter::Strongly Correlated Electrons Irradiation 010306 general physics 0210 nano-technology Saturation (magnetic) |
| Zdroj: | Chinese Physics B. 25:116103 |
| ISSN: | 1674-1056 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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