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Thermomagnetic Properties Improved by Self-Organized Flower-Like Phase Separation of Ferromagnetic Co2Dy0.5Mn0.5Sn

Authors

  • Michael Schwall,

    1. Institut of Inorganic and Analytical Chemistry, University of Mainz, Staudingerweg 9, 55099 Mainz, Germany
    2. Graduate School Material Science in Mainz, University of Mainz, Staudingerweg 9, 55099 Mainz, Germany
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  • Leslie M. Schoop,

    1. Institut of Inorganic and Analytical Chemistry, University of Mainz, Staudingerweg 9, 55099 Mainz, Germany
    2. Graduate School Material Science in Mainz, University of Mainz, Staudingerweg 9, 55099 Mainz, Germany
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  • Siham Ouardi,

    1. Institut of Inorganic and Analytical Chemistry, University of Mainz, Staudingerweg 9, 55099 Mainz, Germany
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  • Benjamin Balke,

    Corresponding author
    1. Institut of Inorganic and Analytical Chemistry, University of Mainz, Staudingerweg 9, 55099 Mainz, Germany
    • Institut of Inorganic and Analytical Chemistry, University of Mainz, Staudingerweg 9, 55099 Mainz, Germany.
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  • Claudia Felser,

    1. Institut of Inorganic and Analytical Chemistry, University of Mainz, Staudingerweg 9, 55099 Mainz, Germany
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  • Peter Klaer,

    1. Institut of Physics, University of Mainz, Staudingerweg 7, 55099 Mainz, Germany
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  • Hans-Joachim Elmers

    1. Institut of Physics, University of Mainz, Staudingerweg 7, 55099 Mainz, Germany
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Abstract

A thermodynamically stable phase separation of Co2Dy0.5Mn0.5Sn into the Heusler compound Co2MnSn and Co8Dy3Sn4 is induced by rapid cooling from the liquid phase. The phase separation forms an ordered flower-like structure on the microscale. The increased scattering of phonons at the phase boundaries reduces the thermal conductivity and thus improves thermoelectric and spincaloric properties.

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