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Synthesis and characterization of magnetic (Cr0.5Mn0.5)(2)GaC thin films
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Materials Physics.
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2015 (English)In: Journal of Materials Science, ISSN 0022-2461, E-ISSN 1573-4803, Vol. 50, no 13, 4495-4502 p.Article in journal (Refereed) Published
Abstract [en]

Growth of (Cr0.5Mn0.5)(2)GaC thin films from C, Ga, and compound Cr0.5Mn0.5 targets is reported for depositions on MgO (111), 4H-SiC (0001), and Al2O3 (0001) with and without a NbN (111) seed layer. Structural quality is found to be highly dependent on the choice of substrate with MgO (111) giving the best results as confirmed by X-ray diffraction and transmission electron microscopy. Phase pure, high crystal quality MAX phase thin films are realized, with a Cr:Mn ratio of 1:1. Vibrating sample magnetometry shows a ferromagnetic component from 30 K up to 300 K, with a measured net magnetic moment of 0.67 mu(B) per metal (Cr + Mn) atom at 30 K and 5 T. The temperature dependence of the magnetic response suggests competing magnetic interactions with a resulting non-collinear magnetic ordering.

Place, publisher, year, edition, pages
2015. Vol. 50, no 13, 4495-4502 p.
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Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-255037DOI: 10.1007/s10853-015-8999-8ISI: 000354093500005OAI: oai:DiVA.org:uu-255037DiVA: diva2:826151
Funder
Swedish Research Council, 642-2013-8020 621-2012-4425
Available from: 2015-06-24 Created: 2015-06-12 Last updated: 2017-12-04Bibliographically approved

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Magnus, Fridrik

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