Elasticity and magnetocaloric effect in MnFe4Si3

M. Herlitschke; B. Klobes; I. Sergueev; P. Hering; J. Perßon; R. P. Hermann

doi:10.1103/PhysRevB.93.094304

Elasticity and magnetocaloric effect in MnFe4Si3

M. Herlitschke, B. Klobes, I. Sergueev, P. Hering, J. Perßon, R. P. Hermann

Neutron & X-Ray Scattering, & Thermophys

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19 Scopus citations

Abstract

The room temperature magnetocaloric material MnFe4Si3 was investigated with nuclear inelastic scattering (NIS) and resonant ultrasound spectroscopy (RUS) at different temperatures and applied magnetic fields in order to assess the influence of the magnetic transition and the magnetocaloric effect on lattice dynamics. The NIS data give access to phonons with energies above 3 meV, whereas RUS probes the elasticity of the material in the MHz frequency range and thus low-energy, ∼ neV, phonon modes. A significant influence of the magnetic transition on the lattice dynamics is observed only in the low-energy, long-wavelength limit. MnFe4Si3 and other compounds in the Mn5-xFexSi3 series were also investigated with vibrating sample magnetometry, resistivity measurements, and Mössbauer spectroscopy in order to study the magnetic transitions and to complement the results obtained on the lattice dynamics.

Original language	English
Article number	094304
Journal	Physical Review B
Volume	93
Issue number	9
DOIs	https://doi.org/10.1103/PhysRevB.93.094304
State	Published - Mar 16 2016

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abstract = "The room temperature magnetocaloric material MnFe4Si3 was investigated with nuclear inelastic scattering (NIS) and resonant ultrasound spectroscopy (RUS) at different temperatures and applied magnetic fields in order to assess the influence of the magnetic transition and the magnetocaloric effect on lattice dynamics. The NIS data give access to phonons with energies above 3 meV, whereas RUS probes the elasticity of the material in the MHz frequency range and thus low-energy, ∼ neV, phonon modes. A significant influence of the magnetic transition on the lattice dynamics is observed only in the low-energy, long-wavelength limit. MnFe4Si3 and other compounds in the Mn5-xFexSi3 series were also investigated with vibrating sample magnetometry, resistivity measurements, and M{\"o}ssbauer spectroscopy in order to study the magnetic transitions and to complement the results obtained on the lattice dynamics.",

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AU - Herlitschke, M.

AU - Klobes, B.

AU - Sergueev, I.

AU - Hering, P.

AU - Perßon, J.

AU - Hermann, R. P.

PY - 2016/3/16

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Elasticity and magnetocaloric effect in MnFe4Si3

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