TY  - JOUR
AU  - Eich, Andreas
AU  - Grzechnik, Andrzej
AU  - Caron, Luana
AU  - Cheng, Yao
AU  - Wilden, Johanna
AU  - Deng, Hao
AU  - Hutanu, Vladimir
AU  - Meven, Martin
AU  - Hanfland, Michael
AU  - Glazyrin, Konstantin
AU  - Hering, Paul
AU  - Herrmann, Markus Guido
AU  - Ait Haddouch, Mohammed
AU  - Friese, Karen
TI  - Magnetocaloric Mn5Si3 and MnFe4Si3 at variable pressure and temperature
JO  - Materials Research Express
VL  - 6
IS  - 9
SN  - 2053-1591
CY  - Bristol
PB  - IOP Publ.
M1  - FZJ-2019-04003
SP  - 096118
PY  - 2019
AB  - 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 ≈ −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).
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000478824300006
DO  - DOI:10.1088/2053-1591/ab33b3
UR  - https://juser.fz-juelich.de/record/864100
ER  -