Mapping the magnetic transition temperatures for medium- and high-entropy alloys
2018 (engelsk)Inngår i: Intermetallics (Barking), ISSN 0966-9795, E-ISSN 1879-0216, Vol. 95, s. 80-84Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]
Tailorable magnetic state near room temperature is very promising for several technological, including magnetocaloric applications. Here using first-principle alloy theory, we determine the Curie temperature (T-C) of a number of equiatomic medium- and high-entropy alloys with solid solution phases. All calculations are performed at the computed lattice parameters, which are in line with the available experimental data. Theory predicts a large crystal structure dependence of T-C, which explains the experimental observations under specified conditions. The sensitivity of the magnetic state to the crystal lattice is reflected by the magnetic exchange interactions entering the Heisenberg Hamiltonian. The analysis of the effect of composition on T-C allows researchers to explore chemistry-dependent trends and design new multi-component alloys with pre-assigned magnetic properties.
sted, utgiver, år, opplag, sider
Elsevier , 2018. Vol. 95, s. 80-84
Emneord [en]
Curie temperature, High-entropy alloys, First-principle calculations, Monte-Carlo simulations
HSV kategori
Identifikatorer
URN: urn:nbn:se:oru:diva-66647DOI: 10.1016/j.intermet.2018.01.016ISI: 000428975100010Scopus ID: 2-s2.0-85041415212OAI: oai:DiVA.org:oru-66647DiVA, id: diva2:1198928
Forskningsfinansiär
Swedish Research CouncilSwedish Foundation for Strategic Research VINNOVA, 2014-03374Swedish Energy AgencyCarl Tryggers foundation
Merknad
Funding Agencies:
Swedish Foundation for International Cooperation in Research and Higher Education
China Scholarship Council
Hungarian Scientific Research Fund OTKA 109570
2018-04-192018-04-192018-04-19bibliografisk kontrollert