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The effects of substrate temperature and oxygen pressure on pulsed laser deposited Bi-substituted Dy iron garnet films

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Papakonstantinou, P, Teggart, B and Atkinson, R (1996) The effects of substrate temperature and oxygen pressure on pulsed laser deposited Bi-substituted Dy iron garnet films. Journal of Magnetism and Magnetic Materials, 163 . pp. 378-392. [Journal article]

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URL: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6TJJ-3SP19HW-1V&_user=126978&_coverDate=11%2F01%2F1996&_alid=1628957875&_rdoc=1&_fmt=high&_orig=search&_origin=search&_zone=rslt_list_item&_cdi=5312&_sort=r&_st=13&_docanchor=&view=c&_ct=11&_acct=C

DOI: 10.1016/S0304-8853(96)00398-8

Abstract

Polycrystalline thin films of highly Bi substituted Dy iron garnets, [(BixDy3−x(Fe, Ga)5O12], with [111] crystalline orientation perpendicular to the film plane were grown on (111) Gd3Ga5O12, single crystal substrates using pulsed laser deposition technique. In the deposited films, Bi stoichiometry was found to be very sensitive to both substrate temperature and oxygen pressure. The Bi volatilisation problem was relieved by depositing in a high background pressure of oxygen. The results demonstrated that high quality garnet films with large magneto-optical (MO) effects and square hysteresis loops could be obtained when the substrate temperature did not exceed 590°C and the oxygen pressure was kept in the neighbourhood of 0.2 mbar. The MO behaviour of these films compared well with predictions based on the fundamental constants of Bi substituted Yttrium Iron Garnet thick films, grown by liquid phase epitaxy. The coercivity could be varied from a few hundred Oe to several kOe by controlling the oxygen pressure and film thickness

Item Type:Journal article
Faculties and Schools:Faculty of Computing & Engineering
Faculty of Computing & Engineering > School of Engineering
Research Institutes and Groups:Engineering Research Institute
Engineering Research Institute > Nanotechnology & Integrated BioEngineering Centre (NIBEC)
ID Code:17055
Deposited By:Professor Pagona Papakonstantinou
Deposited On:11 Feb 2011 10:22
Last Modified:29 Apr 2014 15:54

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