Synthesis and characterization of magnetic (Cr0.5Mn0.5)(2)GaC thin films
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
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
Springer Verlag (Germany) , 2015. Vol. 50, no 13, 4495-4502 p.
Condensed Matter Physics
IdentifiersURN: urn:nbn:se:liu:diva-118837DOI: 10.1007/s10853-015-8999-8ISI: 000354093500005OAI: oai:DiVA.org:liu-118837DiVA: diva2:818175
Funding Agencies|European Research Council under the European Community ; Swedish Research Council (VR) [642-2013-8020, 621-2012-4425]; KAW Fellowship program; SSF synergy grant FUNCASE; Icelandic University Research fund2015-06-082015-06-042015-07-01