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Thermal transport through the magnetic martensitic transition in MnxGe(M = Co, Ni)
Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, United States.
Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, United States.
Halmstad University, School of Information Technology, Halmstad Embedded and Intelligent Systems Research (EIS), MPE-lab. Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, United States & Department of Physics, Stockholm University, Stockholm, Sweden.ORCID iD: 0000-0002-4049-5672
Department of Materials Science and Engineering, Frederick Seitz Materials Research Laboratory, University of Illinois at Urbana-Champaign, Urbana, United States.
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2018 (English)In: Physical Review Materials, E-ISSN 2475-9953, Vol. 2, no 7, article id 075401Article in journal (Refereed) Published
Abstract [en]

We report on changes in the thermal conductivity of solid-state synthesized MnxGe (M = Co, Ni, 0.98 < x < 1.02) alloys through their temperature-induced martensitic structural transition. The thermal conductivity is measured by time-domain thermoreflectance. Mn1.014 NiGe exhibits an increase in thermal conductivity from 11 to 15.5 W m-1 K-1 from approximately 575 to 625 K, and Mn1.007 CoGe exhibits an increase in thermal conductivity from 7 to 8.5 W m-1 K-1 from 500 to 550 K. In MnxNiGe, the transition temperature and the magnitude of the change in thermal conductivity are strongly dependent on the alloy composition. Our study advances the fundamental understanding of the thermal transport properties in the MnxGe(M = Co, Ni) family of alloys and opens a new direction in the search for solid-state phase transition materials with potential applications as thermal regulators. © 2018 American Physical Society

Place, publisher, year, edition, pages
College Park: American Physical Society, 2018. Vol. 2, no 7, article id 075401
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Condensed Matter Physics
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URN: urn:nbn:se:hh:diva-41488DOI: 10.1103/PhysRevMaterials.2.075401ISI: 000436946800003Scopus ID: 2-s2.0-85059636119OAI: oai:DiVA.org:hh-41488DiVA, id: diva2:1390786
Available from: 2020-02-03 Created: 2020-02-03 Last updated: 2020-02-03Bibliographically approved

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