Origin of magnetic moments in defectivesingle crystals
- 10 March 2009
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 79 (11), 113201
- https://doi.org/10.1103/physrevb.79.113201
Abstract
In this Brief Report we show that ferromagnetism can be induced in pure single crystals by oxygen ion irradiation. By combining x-ray diffraction, Raman scattering, and electron-spin resonance spectroscopy, a defect complex, i.e., ions on the substitutional sites accompanied by oxygen vacancies, has been identified in irradiated . This kind of defect complex results in a local stretching Raman mode. We elucidate that ions with one unpaired electron provide the local magnetic moments.
Keywords
This publication has 29 references indexed in Scilit:
- Ferromagnetism and suppression of metallic clusters in Fe implanted ZnO: a phenomenon related to defects?Journal of Physics D: Applied Physics, 2008
- Magnetic State around Cation Vacancies in II–VI SemiconductorsPhysical Review Letters, 2008
- The effects of O deficiency on the electronic structure of rutile TiO2Journal of Physics and Chemistry of Solids, 2007
- Oxygen-defect-induced magnetism to 880 K in semiconducting anatase TiO2−δfilmsJournal of Physics: Condensed Matter, 2006
- Room-temperature ferromagnetism observed in undoped semiconducting and insulating oxide thin filmsPhysical Review B, 2006
- Magnetism without Magnetic Ions: Percolation, Exchange, and Formation Energies of Magnetism-Promoting Intrinsic Defects in CaOPhysical Review Letters, 2006
- O deficiency in the rutile TiO2(110) surface: Ab initio quantum chemical investigation of the electronic propertiesInternational Journal of Quantum Chemistry, 2006
- Magnetism in hafnium dioxidePhysical Review B, 2005
- Possible Path to a New Class of Ferromagnetic and Half-Metallic Ferromagnetic MaterialsPhysical Review Letters, 2002
- First-principles spin-polarized calculations on the reduced and reconstructed(110) surfacePhysical Review B, 1997