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Large uniaxial magnetostriction with sign inversion at the first order phase transition in the nanolaminated Mn2GaC MAX phase

Novoselova, Iuliia P. (författare)
Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany.;Univ Duisburg Essen, Ctr Nanointegrat CENIDE, D-47057 Duisburg, Germany.,Faculty of Physics and Center for Nanointegration (CENIDE), University of Duisburg-Essen, 47057, Duisburg, Germany.
Petruhins, Andrejs (författare)
Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
Wiedwald, Ulf (författare)
Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany.;Univ Duisburg Essen, Ctr Nanointegrat CENIDE, D-47057 Duisburg, Germany.;Natl Univ Sci & Technol MISIS, Moscow 119049, Russia.,Faculty of Physics and Center for Nanointegration (CENIDE), University of Duisburg-Essen, 47057, Duisburg, Germany.; National University of Science and Technology «MISIS», 119049, Moscow, Russian Federation.
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Ingason, Arni Sigurdur, 1979- (författare)
Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten,Grein Research ehf. Dunhaga 5, Reykjavik, Iceland.
Hase, Thomas (författare)
Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England.,Department of Physics, University of Warwick, Coventry, CV4 7AL, UK.
Magnus, Fridrik (författare)
Uppsala universitet,Materialfysik,Univ Iceland, Sci Inst, Dunhaga 3, IS-107 Reykjavik, Iceland,Science Institute, University of Iceland, Dunhaga 3, IS-107, Reykjavik, Iceland.; Division of Materials Physics, Department of Physics and Astronomy, Uppsala University, Box 516, SE-75121, Uppsala, Sweden.
Kapaklis, Vassilios, 1978- (författare)
Uppsala universitet,Materialfysik,Division of Materials Physics, Department of Physics and Astronomy, Uppsala University, Box 516, SE-75121, Uppsala, Sweden.
Palisaitis, Justinas (författare)
Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
Spasova, Marina (författare)
Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany.;Univ Duisburg Essen, Ctr Nanointegrat CENIDE, D-47057 Duisburg, Germany.,Faculty of Physics and Center for Nanointegration (CENIDE), University of Duisburg-Essen, 47057, Duisburg, Germany.
Farle, Michael (författare)
Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany.;Univ Duisburg Essen, Ctr Nanointegrat CENIDE, D-47057 Duisburg, Germany.;Immanuel Kant Baltic Fed Univ, Ctr Functionalized Magnet Mat FunMagMa, Kaliningrad, Russia.,Faculty of Physics and Center for Nanointegration (CENIDE), University of Duisburg-Essen, 47057, Duisburg, Germany.; Center for Functionalized Magnetic Materials (FunMagMa), Immanuel Kant Baltic Federal University, Kaliningrad, Russian Federation.
Rosén, Johanna (författare)
Linköpings universitet,Tunnfilmsfysik,Tekniska fakulteten
Salikhov, Ruslan (författare)
Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany.;Univ Duisburg Essen, Ctr Nanointegrat CENIDE, D-47057 Duisburg, Germany.;Russian Acad Sci, Zavoisky Phys Tech Inst, Kazan 420029, Russia.,Faculty of Physics and Center for Nanointegration (CENIDE), University of Duisburg-Essen, 47057, Duisburg, Germany. ruslan.salikhov@uni-due.de.; Zavoisky Physical-Technical Institute, Russian Academy of Sciences, 420029, Kazan, Russian Federation. ruslan.salikhov@uni-due.de.
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Univ Duisburg Essen, Fac Phys, D-47057 Duisburg, Germany;Univ Duisburg Essen, Ctr Nanointegrat CENIDE, D-47057 Duisburg, Germany. Faculty of Physics and Center for Nanointegration (CENIDE), University of Duisburg-Essen, 47057, Duisburg, Germany. (creator_code:org_t)
2018-02-08
2018
Engelska.
Ingår i: Scientific Reports. - London : NATURE PUBLISHING GROUP. - 2045-2322. ; 8
Relaterad länk:
https://doi.org/10.1...
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https://uu.diva-port... (primary) (Raw object)
https://www.nature.c...
https://liu.diva-por... (primary) (Raw object)
https://urn.kb.se/re...
https://doi.org/10.1...
https://urn.kb.se/re...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • In 2013, a new class of inherently nanolaminated magnetic materials, the so called magnetic MAX phases, was discovered. Following predictive material stability calculations, the hexagonal Mn2GaC compound was synthesized as hetero-epitaxial films containing Mn as the exclusive M-element. Recent theoretical and experimental studies suggested a high magnetic ordering temperature and non-collinear antiferromagnetic (AFM) spin states as a result of competitive ferromagnetic and antiferromagnetic exchange interactions. In order to assess the potential for practical applications of Mn2GaC, we have studied the temperature-dependent magnetization, and the magnetoresistive, magnetostrictive as well as magnetocaloric properties of the compound. The material exhibits two magnetic phase transitions. The Neel temperature is T-N similar to 507 K, at which the system changes from a collinear AFM state to the paramagnetic state. At T-t = 214 K the material undergoes a first order magnetic phase transition from AFM at higher temperature to a non-collinear AFM spin structure. Both states show large uniaxial c-axis magnetostriction of 450 ppm. Remarkably, the magnetostriction changes sign, being compressive (negative) above T-t and tensile (positive) below the T-t. The sign change of the magnetostriction is accompanied by a sign change in the magnetoresistance indicating a coupling among the spin, lattice and electrical transport properties.

Ämnesord

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)
NATURVETENSKAP  -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Condensed Matter Physics (hsv//eng)

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