Crystallographic and magnetic properties of (Cu{sub 1-x}V{sub x})V{sub 2}S{sub 4} (x{approx}0.3) single crystals with the layered defect NiAs structure synthesized under high pressure

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.06.034· OSTI ID:21580259

Klein, Y ^[1]; Moutaabbid, H; Soyer, A; D'Astuto, M; Rousse, G ^[1]; Vigneron, J; Etcheberry, A ^[2]; Gauzzi, A ^[1]

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1. Institut de Mineralogie et Physique des Milieux Condenses, Universite Pierre et Marie Curie, CNRS UMR 7590, Campus Jussieu, 4 place Jussieu 75005 Paris (France)
2. Institut Lavoisier Versailles, Universite de Versailles Saint-Quentin, CNRS UMR 8180, Batiment Lavoisier, 45 avenue des Etats-Unis 78035 Versailles Cedex (France)

We report on the reproducible growth of (Cu{sub 1-x}V{sub x})V{sub 2}S{sub 4} single crystals of sizable dimensions ({approx}0.3 mm) and homogeneous composition (x{approx}0.3) by means of high-pressure synthesis. The refinement of single crystal X-ray diffraction data indicates that the crystal structure is of the monoclinic defect NiAs-type, which consists of a stacking of VS{sub 2} layers with CdI{sub 2}-type structure and chains of edge-sharing (Cu{sub 1-x}V{sub x})S{sub 6} octahedra. Layers and chains form a network of face-sharing octahedra with no Cu-V intra-chain ordering. A combined X-ray photoelectron spectroscopy and bond valence sum analysis indicates that the valence of the V and Cu ions are 3+ and 1+, respectively. Magnetic susceptibility measurements unveil the coexistence of a large Pauli-like and of a small Curie-like paramagnetic contributions, with no evidence of any long range order down to 2 K. This result suggests a picture of predominantly itinerant 3d V electrons with significant electron-electron correlations. - Graphical Abstract: Crystallographic structure of (Cu{sub 0.69}V{sub 0.31})V{sub 2}S{sub 4}. For clarity, the octahedral environment of (Cu{sub 0.69}V{sub 0.31}) site is not shown. Highlights: > Synthesis of new single-crystals in the Cu-V-S system using high pressure and high temperature. > Structural analysis revealed the single-crystals to be of the defect NiAs-type structure. > Bond valence sum analysis combined to X-ray photoemission spectroscopy revealed Cu{sup 1+} and a majority of V{sup 3+}. > Magnetic susceptibility has been measured. > Charge carriers are of two types, localized and itinerant.

• OSTI ID: 21580259
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 9; Other Information: DOI: 10.1016/j.jssc.2011.06.034; PII: S0022-4596(11)00362-8; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CADMIUM IODIDES
CHARGE CARRIERS
CRYSTALLOGRAPHY
ELECTRON CORRELATION
MAGNETIC SUSCEPTIBILITY
MONOCLINIC LATTICES
MONOCRYSTALS
PARAMAGNETISM
PRESSURE RANGE MEGA PA 10-100
SYNTHESIS
TEMPERATURE RANGE 0400-1000 K
TRANSITION ELEMENTS
X RADIATION
X-RAY DIFFRACTION
X-RAY PHOTOELECTRON SPECTROSCOPY
CADMIUM COMPOUNDS
CADMIUM HALIDES
COHERENT SCATTERING
CORRELATIONS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTALS
DIFFRACTION
ELECTROMAGNETIC RADIATION
ELECTRON SPECTROSCOPY
ELEMENTS
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
IONIZING RADIATIONS
MAGNETIC PROPERTIES
MAGNETISM
METALS
PHOTOELECTRON SPECTROSCOPY
PHYSICAL PROPERTIES
PRESSURE RANGE
PRESSURE RANGE MEGA PA
RADIATIONS
SCATTERING
SPECTROSCOPY
TEMPERATURE RANGE