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Type: Artigo de periódico
Title: Electronic Depiction Of Magnetic Origin In Undoped And Fe Doped Tio 2-d Epitaxial Thin Films
Author: Bapna K.
Choudhary R.J.
Pandey S.K.
Phase D.M.
Sharma S.K.
Knobel M.
Abstract: We have investigated the electronic and magnetic properties of the pulsed laser deposited epitaxial thin films of undoped and Fe doped (4 at. ) anatase TiO2-d by photoemission, magnetization measurements, and ab-initio band structure calculations. These films show room temperature magnetic ordering. It is observed that Fe ions hybridize with the oxygen vacancy induced Ti3 defect states. Our study reveals the formation of local magnetic moment at Ti and Fe sites to be responsible for magnetic ordering. A finite density of states at the Fermi level in both undoped and Fe doped films is also observed, suggesting their degenerate semiconducting nature. © 2011 American Institute of Physics.
Rights: aberto
Identifier DOI: 10.1063/1.3640212
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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