Leone, P., Doussier-Brochard, C., Andre, G. & Moelo, Y. (2008) Magnetic properties and neutron diffraction study of two manganese sulfosalts: monoclinic MnSb2S4 and benavidesite (MnPb4Sb6S14). Phys. Chem. Miner. 35 201–206.
Added by: Laurent Cournède (2016-03-10 21:58:42)
|Type de référence: Article
Numéro d'identification (ISBN etc.): 0342-1791
Clé BibTeX: Leone2008a
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Mots-clés: benavidesite, fepb4sb6s14, Magnetic properties, Magnetic structure, manganese, neutron diffraction, sulfosalt
Créateurs: Andre, Doussier-Brochard, Leone, Moelo
Collection: Phys. Chem. Miner.
Consultations : 8/368
Indice de consultation : 2%
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Mn2+Sb2S4, a monoclinic dimorph of clerite, and benavidesite (Mn2+Pb4Sb6S14) show well-individualized ingle chains of manganese atoms in octahedral coordination. Their magnetic structures are presented and compared with those of iron derivatives, berthierite (Fe2+Sb2S4) and jamesonite (Fe2+Pb4Sb6S14). Within chains, interactions are antiferromagnetic. Like berthierite, MnSb2S4 shows a spiral magnetic structure with an incommensurate 1D propagation vector [0, 0.369, 0], unchanged with temperature. In berthierite, the interactions between identical chains are antiferromagnetic, whereas in MnSb2S4 interactions between chains are ferromagnetic along c-axis. Below 6 K, jamesonite and benavidesite have commensurate magnetic structures with the same propagation vector [0.5, 0, 0]: jamesonite is a canted ferromagnet and iron magnetic moments are mainly oriented along the a-axis, whereas for benavidesite, no angle of canting is detected, and manganese magnetic moments are oriented along b-axis. Below 30 K, for both compounds, one-dimensional magnetic ordering or correlations are visible in the neutron diagrams and persist down to 1.4 K.
Added by: Laurent Cournède