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@INPROCEEDINGS{AitHaddouch:873844,
author = {Ait Haddouch, Mohammed and VOIGT, JÖRG and FRIESE, KAREN
and EICH, ANDREAS and PERßON, JÖRG and BUDZIANOWSKI,
ARMAND and VIOLINI, NICOLÒ and YOKAICHIYA, FABIANO and
ADROJA, DEVASHIBHAI and BRÜCKEL, THOMAS},
title = {{M}agnetic phase diagram of the magnetocaloric compound
{M}n{F}e{S}i},
reportid = {FZJ-2020-01046},
year = {2020},
abstract = {We have studied the magnetic phases of single-crystalline
Mn3Fe2Si3 by neutron diffraction and magnetization
measurements. Within the series Mn5−xFexSi3, an inverse
magneto-caloric effect (MCE) has been observed for x=0,
while for x=4 a moderately high direct MCE occurs [1].
Similarly to the parent compound Mn5Si3, Mn3Fe2Si3 exhibits
two antiferromagnetic phase transitions to an AF1 and AF2
phase, respectively. The transition from AF1 → AF2 gives
rise to an inverse MCE, i.e. the magnetic entropy is
increased by the application of a magnetic field, albeit
with complex field and temperature dependences. We discuss
these changes in light of the preferential replacement of Mn
by Fe on one of the two distinct lattice sites of the
crystal structure (space group P63/mcm at RT). This leads to
an increase in the transition temperatures and critical
fields when compared to Mn5Si3. In addition, we find hints
for ferromagnetic short-range correlations, which persist at
temperatures twice as high as the Neel temperature. [1]
Songlin et al, J. Alloys Compd, 334, 249−252 (2002)},
month = {Mar},
date = {2020-03-15},
organization = {DPG-Frühjahrstagung der Sektion
Kondensierte Materie (SKM), Technischen
Universität Dresden, Campus
Südvorstadt (Germany), 15 Mar 2020 -
20 Mar 2020},
subtyp = {Invited},
cin = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-ESS},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-ESS-20170404},
pnm = {144 - Controlling Collective States (POF3-144) / 524 -
Controlling Collective States (POF3-524) / 6212 - Quantum
Condensed Matter: Magnetism, Superconductivity (POF3-621) /
6213 - Materials and Processes for Energy and Transport
Technologies (POF3-621) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-524 /
G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6213 /
G:(DE-HGF)POF3-6G4},
typ = {PUB:(DE-HGF)6},
url = {https://juser.fz-juelich.de/record/873844},
}