Study of the antiferromagnetism of Mn.sub.5./sub.Si.sub.3./sub.: an inverse magnetocaloric effect material

0385049 - FZÚ 2013 RIV GB eng J - Článek v odborném periodiku
Gottschilch, M. - Gourdon, O. - Persson, J. - de la Cruz, C. - Petříček, Václav - Brueckel, T.
Study of the antiferromagnetism of Mn₅Si₃: an inverse magnetocaloric effect material.
Journal of Materials Chemistry. Roč. 22, č. 30 (2012), s. 15275-15284. ISSN 0959-9428
Grant ostatní: AV ČR(CZ) AP0701
Program: Akademická prémie - Praemium Academiae
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: magnetic structure * superspace approach
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 6.108, rok: 2012

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 P63/mcm hexagonal space group. Magnetic susceptibility and specific heat measurements show clearly two major anomalies. At 100(1) K, a transition (Tm1) corresponds to a collinear antiferromagnetic ordering (AF1). The second transition at 62(1) K (Tm2), 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.
Trvalý link: http://hdl.handle.net/11104/0007287