Electrical and Magnetic Properties of New Mixed Transition Metal Sulfides BaKCu3 M S4 ( M =Mn, Co, Ni)
Identifieur interne : 000274 ( France/Analysis ); précédent : 000273; suivant : 000275Electrical and Magnetic Properties of New Mixed Transition Metal Sulfides BaKCu3 M S4 ( M =Mn, Co, Ni)
Auteurs : M. Mouallem-Bahout [France] ; O. Pe A [France] ; C. Carel [France] ; A. Ouammou [Maroc]Source :
- Journal of Solid State Chemistry [ 0022-4596 ] ; 2001.
Descripteurs français
- Pascal (Inist)
- 6166F, 7220F, 7530C, 7560E, Ba Co Cu K S, Ba Cu K Mn S, Ba Cu K Ni S, BaKCu3CoS4, BaKCu3MnS4, BaKCu3NiS4, Baryum sulfure, Cobalt sulfure, Conductivité électrique, Cuivre sulfure, Diffraction RX, Etude expérimentale, Loi Curie Weiss, Manganèse sulfure, Nickel sulfure, Polycristal, Potassium sulfure, Structure cristalline, Susceptibilité magnétique.
English descriptors
- KwdEn :
- Barium sulfides, Cobalt sulfides, Copper sulfides, Crystal structure, Curie-Weiss law, Electrical conductivity, Experimental study, Magnetic susceptibility, Manganese sulfides, Nickel sulfides, Néel temperature., Polycrystals, Potassium sulfides, XRD, layered structure, magnetic interactions, quaternary sulfides.
Abstract
New transition metal sulfides BaKCu3MS4 (M=Mn, Co, Ni) were prepared from BaCO3, K2CO3, and the corresponding transition metal oxides by CS2/Ar sulfurization. The materials are based on a common structural pattern consisting of 2-D arrangements of MS4 tetrahedra linked by edges, crystallizing in the tetragonal ThCr2Si2-type structure in space group I4/mmm. Electrical resistivity measurements show that the new phases are semiconducting. The temperature dependence of magnetic susceptibility shows different behaviors depending on the substituting transition element: the data for BaKCu3MnS4 can be fitted to the Curie–Weiss equation (μeff=2.50 μB per manganese ion) while magnetic ordering occurs for BaKCu3CoS4 (TN∼12 K). BaKCu3NiS4 exhibits temperature–independent paramagnetic behavior.
Url:
DOI: 10.1006/jssc.2000.9066
Affiliations:
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<term>Copper sulfides</term>
<term>Crystal structure</term>
<term>Curie-Weiss law</term>
<term>Electrical conductivity</term>
<term>Experimental study</term>
<term>Magnetic susceptibility</term>
<term>Manganese sulfides</term>
<term>Nickel sulfides</term>
<term>Néel temperature.</term>
<term>Polycrystals</term>
<term>Potassium sulfides</term>
<term>XRD</term>
<term>layered structure</term>
<term>magnetic interactions</term>
<term>quaternary sulfides</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>6166F</term>
<term>7220F</term>
<term>7530C</term>
<term>7560E</term>
<term>Ba Co Cu K S</term>
<term>Ba Cu K Mn S</term>
<term>Ba Cu K Ni S</term>
<term>BaKCu3CoS4</term>
<term>BaKCu3MnS4</term>
<term>BaKCu3NiS4</term>
<term>Baryum sulfure</term>
<term>Cobalt sulfure</term>
<term>Conductivité électrique</term>
<term>Cuivre sulfure</term>
<term>Diffraction RX</term>
<term>Etude expérimentale</term>
<term>Loi Curie Weiss</term>
<term>Manganèse sulfure</term>
<term>Nickel sulfure</term>
<term>Polycristal</term>
<term>Potassium sulfure</term>
<term>Structure cristalline</term>
<term>Susceptibilité magnétique</term>
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<front><div type="abstract" xml:lang="en">New transition metal sulfides BaKCu3MS4 (M=Mn, Co, Ni) were prepared from BaCO3, K2CO3, and the corresponding transition metal oxides by CS2/Ar sulfurization. The materials are based on a common structural pattern consisting of 2-D arrangements of MS4 tetrahedra linked by edges, crystallizing in the tetragonal ThCr2Si2-type structure in space group I4/mmm. Electrical resistivity measurements show that the new phases are semiconducting. The temperature dependence of magnetic susceptibility shows different behaviors depending on the substituting transition element: the data for BaKCu3MnS4 can be fitted to the Curie–Weiss equation (μeff=2.50 μB per manganese ion) while magnetic ordering occurs for BaKCu3CoS4 (TN∼12 K). BaKCu3NiS4 exhibits temperature–independent paramagnetic behavior.</div>
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