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  Magnetocaloric Mn5Si3 and MnFe4Si3 at variable pressure and temperature

Eich, A., Grzechnik, A., Caron, L., Chengi, Y., Wilden, J., Deng, H., et al. (2019). Magnetocaloric Mn5Si3 and MnFe4Si3 at variable pressure and temperature. Materials Research Express, 6(9): 096118, pp. 1-10. doi:10.1088/2053-1591/ab33b3.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0004-824B-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0004-824D-3
Genre: Journal Article

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 Creators:
Eich, Andreas1, Author
Grzechnik, Andrzej1, Author
Caron, Luana2, Author              
Chengi, Yao1, Author
Wilden, Johanna1, Author
Deng, Hao1, Author
Hutanu, Vladimir1, Author
Meven, Martin1, Author
Hanfland, Michael1, Author
Glazyrin, Konstantin1, Author
Hering, Paul1, Author
Herrmann, Markus Guido1, Author
Haddouch, Mohammed Ait1, Author
Friese, Karen1, Author
Affiliations:
1External Organizations, ou_persistent22              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              

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 Abstract: The influence of hydrostatic high pressure on the crystal structures and magnetic properties of magnetocaloric Mn5Si3 and MnFe4Si3 was studied with temperature dependent synchrotron powder diffraction, neutron single-crystal diffraction and magnetization measurements. Mn5Si3 shows no indication for any pressure-induced structural phase transition up to 24.2 GPa at room temperature. MnFe4Si3 exhibits no clear indication for any phase transition at high temperatures (296 K-373 K) and high pressures. Anomalies in the lattice parameter at low temperatures indicate a structural response to magnetic ordering. The gradient of decreasing magnetic transition temperature with increasing pressure is dT(C)/dP approximate to -15 K GPa(-1). The transition temperature in MnFe4Si3 can be tuned by pressure in the temperature range relevant for applications, while pressure has hardly any detrimental influence on other key features relevant to magnetocaloric applications (the width of hysteresis, saturation magnetization, magnetocrystalline anisotropy).

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Language(s): eng - English
 Dates: 2019-07-312019-07-31
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1088/2053-1591/ab33b3
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Title: Materials Research Express
  Other : Mater. Res. Express
Source Genre: Journal
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Publ. Info: Bristol : IoPP
Pages: - Volume / Issue: 6 (9) Sequence Number: 096118 Start / End Page: 1 - 10 Identifier: Other: 2053-1591
CoNE: https://pure.mpg.de/cone/journals/resource/2053-1591