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Realization of room temperature ferromagnetism in Zn(1-x)Cr(x)O thin films grown by RF magnetron sputtering

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Title Realization of room temperature ferromagnetism in Zn(1-x)Cr(x)O thin films grown by RF magnetron sputtering
 
Creator ELANCHEZHIYAN, J
BHUVANA, KP
GOPALAKRISHNAN, N
CHANG, Y
SIVANANTHAN, S
KUMAR, MS
BALASUBRAMANIAN, T
 
Subject zno films
semiconductors
design
oxide
thin films
rf sputtering
x-ray diffraction
afm
magnetic measurements
 
Description Chromium doped zinc oxide (ZnO:Cr) films have been deposited onto sapphire substrates by RF magnetron sputtering. The effects of(different chromium concentrations (5, 15 and 30 mol%) in structural, morphological and magnetic properties have been investigated by X-ray diffraction (XRD), atomic force microscopy (AFM) and vibrating sample magnetometer (VSM), respectively, According to X-ray diffraction the films are preferentially oriented along (0 0 2) diffraction plane and maintain its wurtzite structure by the addition of Cr even for higher concentration. The FWIIM is found to increase initially and it saturates for 15 and 30% of Cr concentration. AFM images reveal that the surface roughness of the films is exponentially decreased upon the addition of Cr. VSM measurement indicates the realization of ferromagnetism at room temperature for the films corresponding to 15 and 30 mol% Cr (loped ZnO Which suggesting that the sufficient number of Cr ions incorporated to induce the magnetic moment. (c) 2008
 
Publisher ELSEVIER SCIENCE SA
 
Date 2011-07-28T18:17:33Z
2011-12-26T12:47:17Z
2011-12-27T05:35:13Z
2011-07-28T18:17:33Z
2011-12-26T12:47:17Z
2011-12-27T05:35:13Z
2009
 
Type Article
 
Identifier JOURNAL OF ALLOYS AND COMPOUNDS, 468(1-2), 7-10
0925-8388
http://dx.doi.org/10.1016/j.jallcom.2007.12.087
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7465
http://hdl.handle.net/10054/7465
 
Language en