Journal
SUPERLATTICES AND MICROSTRUCTURES
Volume 77, Issue -, Pages 313-324Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2014.10.035
Keywords
Magnetization; Magnesium oxide; X-ray absorption near edge fine structure; d degrees ferromagnetism
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Funding
- DST, GOI under Indo-Russia project [INT/RFBR/P-72]
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Present study reports the role of surface and subsurface defects in amorphous and polycrystalline MgO thin films. The amorphous film exhibits magnetization of the order of 179 emu/cc at room temperature, however, this value is almost 10 times smaller than the value for polycrystalline MgO film. SEM-EDX and RBS studies reveal the absence of magnetic impurities in both films. Observed magnetic properties seem to be originated from the surface states as evidenced by X-ray absorption near edge fine structure study and in correlation with the existing theories of d degrees ferromagnetism in similar oxides (C) 2014 Elsevier Ltd. All rights reserved.
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