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Theoretical stability, thin film synthesis and transport properties of the Mon+1GaCn MAX phase
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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
Abstract [en]

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 [0001], 6H-SiC [0001] and MgO [111] substrates within the temperature range of 500 degrees C and 750 degrees C. High structural quality films were obtained for synthesis on MgO [111] 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
2015. Vol. 9, no 3, 197-201 p.
Keyword [en]
superconducting MAX phases, Mo2GaC, ab-initio calculations, magnetron sputtering, thin films
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-252030DOI: 10.1002/pssr.201409543ISI: 000351674600009OAI: oai:DiVA.org:uu-252030DiVA: diva2:809153
Available from: 2015-04-30 Created: 2015-04-28 Last updated: 2017-12-04Bibliographically approved

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Magnus, Fridrik

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