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@INPROCEEDINGS{Abboushi:891345,
author = {Abboushi, Nour},
title = {{I}nvestigation of macroscopic magnetic properties of
{M}n5{S}i3 compound},
reportid = {FZJ-2021-01438},
year = {2021},
abstract = {Regarding the frame work of my master thesis project, we
have worked on single crystal samples of 𝑀𝑛5𝑆𝑖3
intermetallic compound. DC-field direction dependent mass
magnetization measurements were performed, using different
protocols with magnetic field along three different
crystallographic directions, to investigate the physical
macroscopic magnetic properties of this compound, and then
to calculate the potential of MCE.As a general overview
about this compound , at room temperature it’s found to be
in paramagnetic state and crystalizes in a hexagonal
structure type 𝐷88 with space group (𝑃63/𝑚𝑐𝑚)
, with two distinct crystallographic sites for Mn atoms
[1-3]. Interestingly, it displays a complex modulated
magnetic structure, which is known to give rise to two
first-order transitions from a non-collinear anti-
ferromagnetic structure to a collinear antiferromagnetic
structure at 66 K (AFM1), and from the latter to
Paramagnetism at 99 K (AFM2) [2, 4-7]. Sürgers et al [8] ,
recently reported the presence of another intermediate
magnetic configuration, AFM1´ , through which the AFM1
state transforms to the AFM2 state in the presence of an
applied magnetics field (H) , with highly dependent on
temperature and magnetic field.In addition to such unusual
magnetic properties, Mn5Si3 also shows different functional
properties, such as large inverse magnetocaloric effect,
cooling by adiabatic magnetization, which is associated with
the AFM1-AFM2 phase transition [9-11].In the context of this
work, we have presented an overview about how the field
direction affects the observed transitions. In addition to
the complex magnetic phase diagram of Mn5Si3, we have
calculated the MCE for the different directions both for the
transitions AFM1-AFM2 and AFM2-paramagnetic.References1.
Aronsson, B., Borides and silicides of the transition
metals. Arkiv Kemi, 1960. 16.2. Lander, G.H., P.J. Brown,
and J.B. Forsyth, ANTIFERROMAGNETIC STRUCTURE OF MN5SI3.
Proceedings of the Physical Society of London, 1967.
91(572P): p. $332-\&.3.$ Menshikov, A.Z., A.P. Vokhmyanin,
and Y.A. Dorofeev, Magnetic-Structure and
Phase-Transformations in Mn5si3. Physica Status Solidi
B-Basic Research, 1990. 158(1): p. 319-328.4. Alkanani, H.J.
and J.G. Booth, MAGNETIC-FIELD-INDUCED TRANSITIONS IN
MN5SI3. Journal of Magnetism and Magnetic Materials, 1995.
140: p. 1539-1540.5. Brown, P.J. and J.B. Forsyth,
Antiferromagnetism in Mn5si3 - the Magnetic-Structure of the
Af2 Phase at 70 K. Journal of Physics-Condensed Matter,
1995. 7(39): p. 7619-7628.6. Vinokurova, L., et al.,
Magnetic phase transitions and electronic structure of the
manganese silicides. Journal of Magnetism and Magnetic
Materials, 1990. 90-91: p. 121-125.7. Silva, M.R., P.J.
Brown, and J.B. Forsyth, Magnetic moments and magnetic site
susceptibilities in Mn5Si3. Journal of Physics-Condensed
Matter, 2002. 14(37): p. 8707-8713.8. Sürgers, C., et al.,
Switching of a large anomalous Hall effect between
metamagnetic phases of a non-collinear antiferromagnet.
2017. 7: p. 42982.9. Biniskos, N., et al., Spin Fluctuations
Drive the Inverse Magnetocaloric Effect in Mn5Si3. Physical
Review Letters, 2018. 120(25): p. 6.10. Gottschilch, M., et
al., Study of the antiferromagnetism of Mn5Si3: an inverse
magnetocaloric effect material. Journal of Materials
Chemistry, 2012. 22(30): p. 15275-15284.11. Tegus, O., et
al., Magnetic and magnetocaloric properties of Mn5Ge3−
xSbx. Journal of Alloys and Compounds, 2002. 337(1-2): p.
269-271.},
month = {Mar},
date = {2021-03-25},
organization = {Digital Institute Seminar JCNS-2,
online event (online event), 25 Mar
2021 - 25 Mar 2021},
subtyp = {Invited},
cin = {JCNS-2 / PGI-4 / JARA-FIT},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (FZJ) (POF4-6G4)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G4},
typ = {PUB:(DE-HGF)31},
url = {https://juser.fz-juelich.de/record/891345},
}