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Michael Schwall, Leslie M. Schoop, Siham Ouardi, Benjamin Balke, Claudia Felser, Peter Klaer and Hans-Joachim Elmers Thermomagnetic Properties Improved by Self-Organized Flower-Like Phase Separation of Ferromagnetic Co2Dy0.5Mn0.5Sn Advanced Functional Materials 22

Version of Record online: 22 FEB 2012 | DOI: 10.1002/adfm.201102792

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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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