Theoretical stability, thin film synthesis and transport properties of the Mon+1GaCn MAX phase
2015 (English)In: Physica Status Solidi. Rapid Research Letters, ISSN 1862-6254, E-ISSN 1862-6270, Vol. 9, no 3, 197-201 p.Article in journal (Refereed) Published
The phase stability of Mon +1GaCn has been investigated using ab-initio calculations. The results indicate stability for the Mo2GaC phase only, with a formation enthalpy of 0.4 meV per atom. Subsequent thin film synthesis of Mo2GaC was performed through magnetron sputtering from elemental targets onto Al2O3 , 6H-SiC  and MgO  substrates within the temperature range of 500 degrees C and 750 degrees C. High structural quality films were obtained for synthesis on MgO  substrates at 590 degrees C. Evaluation of transport properties showed a superconducting behavior with a critical temperature of approximately 7 K, reducing upon the application of an external magnetic field. The results point towards the first superconducting MAX phase in thin film form.
Place, publisher, year, edition, pages
Wiley-VCH Verlag , 2015. Vol. 9, no 3, 197-201 p.
superconducting MAX phases; Mo2GaC; ab-initio calculations; magnetron sputtering; thin films
IdentifiersURN: urn:nbn:se:liu:diva-117388DOI: 10.1002/pssr.201409543ISI: 000351674600009OAI: oai:DiVA.org:liu-117388DiVA: diva2:807779
Funding Agencies|European Research Council under European Community/ERC ; Swedish Research Council (VR) [642-2013-8020, 621-2012-4425]; KAW Fellowship program; SSF synergy grant FUNCASE; Icelandic Research Fund2015-04-242015-04-242015-09-11