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Influence of annealing parameters on the ferromagnetic properties of optimally passivated (Ga,Mn)As epilayers
Dalarna University, School of Technology and Business Studies, Material Science.
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2005 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 72, no 12, article id 125324Article in journal (Refereed) Published
Abstract [en]

The influence of annealing parameters—temperature (Ta) and time (ta)—on the magnetic properties of As-capped (Ga,Mn)As epitaxial thin films has been investigated. The dependence of the transition temperature (TC) on ta marks out two regions. The TC peak behavior, characteristic of the first region, is more pronounced for thick samples, while for the second ("saturated") region the effect of ta is more pronounced for thin samples. A right choice of the passivation medium, growth conditions along with optimal annealing parameters routinely yield TC-values of ~150 K and above, regardless of the thickness of the epilayers

Place, publisher, year, edition, pages
2005. Vol. 72, no 12, article id 125324
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Materials Engineering
Identifiers
URN: urn:nbn:se:du-2683DOI: 10.1103/PhysRevB.72.125324ISI: 000232229400090OAI: oai:dalea.du.se:2683DiVA, id: diva2:519803
Available from: 2007-04-04 Created: 2007-04-04 Last updated: 2017-12-07Bibliographically approved

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