| ชื่อเรื่อง | : | Electronic and magnetic properties of V-doped anatase TiO2 from first principles |
| นักวิจัย | : | Du, Xiaosong , Li, Qunxiang , Su, Haibin , Yang, Jinlong |
| คำค้น | : | DRNTU::Engineering::Materials::Magnetic materials. |
| หน่วยงาน | : | Nanyang Technological University, Singapore |
| ผู้ร่วมงาน | : | - |
| ปีพิมพ์ | : | 2549 |
| อ้างอิง | : | Du, X., Li, Q., Su, H. & Yang, J. (2006). Electronic and magnetic properties of V-doped anatase TiO2 from first principles. Physical Review B, 74. , http://hdl.handle.net/10220/6924 , http://dx.doi.org/10.1103/PhysRevB.74.233201 |
| ที่มา | : | - |
| ความเชี่ยวชาญ | : | - |
| ความสัมพันธ์ | : | Physical review B |
| ขอบเขตของเนื้อหา | : | - |
| บทคัดย่อ/คำอธิบาย | : | We report a first-principles study on the geometric, electronic, and magnetic properties of V-doped anatase TiO2. The DFT+U (Hubbard coefficient) approach predicts semiconductor band structures for Ti1−xVxO2 (x=6.25% and 12.5%), in good agreement with the poor conductivity of samples, while the standard calculation within generalized gradient approximation fails. Theoretical results show that V atoms tend to stay close and result in strong ferromagnetism through superexchange interactions. Oxygen vacancy induced magnetic polaron could produce long-range ferromagnetic interaction between largely separated magnetic impurities. The experimentally observed ferromagnetism in V-doped anatase TiO2 at room temperature may originate from a combination of short-range superexchange coupling and long-range bound magnetic polaron percolation. |
| บรรณานุกรม | : |
Du, Xiaosong , Li, Qunxiang , Su, Haibin , Yang, Jinlong . (2549). Electronic and magnetic properties of V-doped anatase TiO2 from first principles.
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Du, Xiaosong , Li, Qunxiang , Su, Haibin , Yang, Jinlong . 2549. "Electronic and magnetic properties of V-doped anatase TiO2 from first principles".
กรุงเทพมหานคร : Nanyang Technological University, Singapore. Du, Xiaosong , Li, Qunxiang , Su, Haibin , Yang, Jinlong . "Electronic and magnetic properties of V-doped anatase TiO2 from first principles."
กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2549. Print. Du, Xiaosong , Li, Qunxiang , Su, Haibin , Yang, Jinlong . Electronic and magnetic properties of V-doped anatase TiO2 from first principles. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2549.
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