Magnetic properties of ZrO2-diluted magnetic semiconductors |
| |
Authors: | Thomas Archer Chaitanya Das PemmarajuStefano Sanvito |
| |
Institution: | School of Physics, Trinity College, Dublin 2, Ireland |
| |
Abstract: | Monoclinic zirconia (ZrO2) as a potential host for diluted magnetic semiconductors (DMS) was investigated using density functional theory (DFT). Our calculations assessed the feasibility of long-range magnetic order at room temperature for transition metal ions substituting Zr. The defect-related d states split into eg and t2g bands. The exchange mechanism was shown to have strong nearest-neighbour coupling for several dopants reaching up to 150 meV for Fe. However, there was little to no long-range coupling extending beyond nearest-neighbour coordination, resulting in a non-physically high-defect concentration necessary for room temperature ferromagnetism. |
| |
Keywords: | DFT Zirconia DMS High-k Dielectric |
本文献已被 ScienceDirect 等数据库收录! |