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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.