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Doussier-Brochard, C., Leone, P., Andre, G. & Moelo, Y. (2009) Neutron diffraction study of magnetic ordering of the manganese bismuth chloro-sulfide: MnBiS2Cl. Mater. Res. Bull. 44 759–761.
Added by: Laurent Cournède (2016-03-10 21:41:24) |
| Type de référence: Article DOI: 10.1016/j.materresbull.2008.09.028 Numéro d'identification (ISBN etc.): 0025-5408 Clé BibTeX: DoussierBrochard2009 Voir tous les détails bibliographiques  |
Catégories: CESES Mots-clés: berthierite fesb2s4, br, Chalcogenides, cl, crystal-structure, family, halides, Magnetic materials, Magnetic structure, mnsbs2cl, Neutron scattering Créateurs: Andre, Doussier-Brochard, Leone, Moelo Collection: Mater. Res. Bull. |
Consultations : 1/990
Indice de consultation : 7% Indice de popularité : 1.75% |
| Résumé |
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In quaternary compounds of Mn(2+)PnQ(2)X (Pn = Sb, Bi; Q = S, Se: X = Cl, Br, 1), Mn atoms in octahedral coordination (4 Q and 2 X) form waved layers separated by Pn atoms. The magnetic structure of the manganese bismuth chloro-sulfide MnBiS2Cl has been determined by neutron powder diffraction, revealing a magnetic ordering with an incommensurate wave-vector along b-axis (k = [0, 0.3978, 0]) at 1.6 K Two modulation models, sinusoidal and helicoidal, give quite equivalent magnetic reliability factors (R-mag = 0.0450 and 0.0481, respectively). The magnetic moment decreases with increasing temperature, to zero at T-N = 32 K. The evolution of the propagation wave-vector shows an irregularity at about 28 K. It could evidence two-phase transitions in agreement with the specific heat measurements. These results are compared to those of manganese antimony chloro-sulfide MnSbS2Cl, isotypic with MnBiS2Cl. (C) 2008 Elsevier Ltd. All rights reserved.
Added by: Laurent Cournède |