This title appears in the Scientific Report :
2012
Please use the identifier:
http://dx.doi.org/10.1039/c2jm00154c in citations.
Please use the identifier: http://hdl.handle.net/2128/7559 in citations.
Study of the antiferromagnetism of Mn5Si3: an inverse magnetocaloric effect material
Study of the antiferromagnetism of Mn5Si3: an inverse magnetocaloric effect material
The intermetallic compound Mn5Si3 has been studied by high-resolution Time-of-Flight (TOF) neutron powder diffraction. At room temperature, Mn5Si3 is paramagnetic and it crystallizes in the P6(3)/mcm hexagonal space group. Magnetic susceptibility and specific heat measurements show clearly two major...
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Personal Name(s): | Gottschlich, M. |
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Gourdon, O. / Perßon, J. / da la Cruz, C. / Petricek, V. / Brückel, T. | |
Contributing Institute: |
Neutronenstreuung; JCNS-1 JARA-FIT; JARA-FIT Streumethoden; JCNS-2 Streumethoden; PGI-4 Neutronenstreuung; ICS-1 |
Published in: | Journal of materials chemistry, 22 (2012) S. 15275 - 15284 |
Imprint: |
London
ChemSoc
2012
|
Physical Description: |
15275 - 15284 |
DOI: |
10.1039/c2jm00154c |
Document Type: |
Journal Article |
Research Program: |
In-house Research with PNI Grundlagen für zukünftige Informationstechnologien |
Series Title: |
Journal of Materials Chemistry
22 |
Subject (ZB): | |
Link: |
Get full text Published under German "Allianz" Licensing conditions on 2012-06-27. Available in OpenAccess from 2013-06-27 |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/7559 in citations.
The intermetallic compound Mn5Si3 has been studied by high-resolution Time-of-Flight (TOF) neutron powder diffraction. At room temperature, Mn5Si3 is paramagnetic and it crystallizes in the P6(3)/mcm hexagonal space group. Magnetic susceptibility and specific heat measurements show clearly two major anomalies. At 100(1) K, a transition (Tm-1) corresponds to a collinear antiferromagnetic ordering (AF1). The second transition at 62(1) K (Tm-2), which was still unclear, highlights a magneto-structural distortion from an orthorhombic symmetry (AF1) to a monoclinic symmetry (AF2), which could be influenced by a low magnetic field. Such a magneto-structural change is directly associated with the inverse magnetocaloric effect behaviour of this material. A new description by means of the commensurate magnetic superspace groups, Ccmm1'(0 beta 0)00ss and C2(1)/m1'(alpha beta 0)0ss, has been used to refine properly the low temperature antiferromagnetic structures. Band structure calculations using the self-consistent, spin-polarized TB-LMTO method were accomplished to support the magnetic properties observed at low temperature. |