Title of article
Effects of depositing rate on structure and magnetic properties of Mn:TiO2 films grown by plasma-assisted molecular beam epitaxy
Author/Authors
Li، نويسنده , , X.Y and Wu، نويسنده , , S.X. and Xu، نويسنده , , L.M. and Li، نويسنده , , C.T. and Liu، نويسنده , , Y.J. and Xing، نويسنده , , X.J. and Li، نويسنده , , S.W.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2009
Pages
4
From page
90
To page
93
Abstract
We research the relationship between structural quality and magnetic ordering, using epitaxial Mn-doped anatase TiO2 with excellent structural quality as a model system. Epitaxial films deposited slowly 0.08 (إ/s) possess a perfect crystalline structure, whereas films deposited at 0.2 (إ/s) are found to have a highly defected crystalline structure, as characterized by X-ray diffraction (XRD). X-ray photoelectron spectroscopy studies (XPS) indicate the possibility of hybridization between the Mn2+ ions and host defects. In contrast to defective Mn:TiO2, these structurally superior films show negligible magnetism. It is demonstrated that room temperature ferromagnetism strongly correlated with the defect density of the sample.
Keywords
Anatase , Mn-doped TiO2 film , Dilute Magnetic Semiconductors , Molecular Beam Epitaxy
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Serial Year
2009
Journal title
MATERIALS SCIENCE & ENGINEERING: B
Record number
2146205
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