Thermomagnetic properties improved by self-organized flower-like phase separation of ferromagnetic Co 2Dy 0.5Mn 0.5Sn

Michael Schwall; Leslie M. Schoop; Siham Ouardi; Benjamin Balke; Claudia Felser; Peter Klaer; Hans Joachim Elmers

doi:10.1002/adfm.201102792

Thermomagnetic properties improved by self-organized flower-like phase separation of ferromagnetic Co ₂Dy _0.5Mn _0.5Sn

Michael Schwall, Leslie M. Schoop, Siham Ouardi, Benjamin Balke, Claudia Felser, Peter Klaer, Hans Joachim Elmers

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

A thermodynamically stable phase separation of Co ₂Dy _0.5Mn _0.5Sn into the Heusler compound Co ₂MnSn and Co ₈Dy ₃Sn ₄ 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.

Original language	English (US)
Pages (from-to)	1822-1826
Number of pages	5
Journal	Advanced Functional Materials
Volume	22
Issue number	9
DOIs	https://doi.org/10.1002/adfm.201102792
State	Published - May 9 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Chemistry
Condensed Matter Physics
General Materials Science

Keywords

heusler compounds
phase separation
spincalorics
thermomagnetics

Access to Document

10.1002/adfm.201102792

Cite this

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title = "Thermomagnetic properties improved by self-organized flower-like phase separation of ferromagnetic Co 2Dy 0.5Mn 0.5Sn",

abstract = "A thermodynamically stable phase separation of Co 2Dy 0.5Mn 0.5Sn into the Heusler compound Co 2MnSn and Co 8Dy 3Sn 4 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.",

keywords = "heusler compounds, phase separation, spincalorics, thermomagnetics",

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AU - Schwall, Michael

AU - Schoop, Leslie M.

AU - Ouardi, Siham

AU - Balke, Benjamin

AU - Felser, Claudia

AU - Klaer, Peter

AU - Elmers, Hans Joachim

PY - 2012/5/9

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AB - A thermodynamically stable phase separation of Co 2Dy 0.5Mn 0.5Sn into the Heusler compound Co 2MnSn and Co 8Dy 3Sn 4 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.

KW - heusler compounds

KW - phase separation

KW - spincalorics

KW - thermomagnetics

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