Single crystals of new Ruddlesden-Popper phases (SrLa) sub 3 V sub 2 O sub 7 and Sr sub 4 V sub 3 O sub 9. 7 : Preparation, crystal structure, and electrical resistivity

Journal Article · Fri Mar 01 00:00:00 EST 1991 · Journal of Solid State Chemistry; (United States)

DOI:https://doi.org/10.1016/0022-4596(91)90072-P· OSTI ID:5566696

Gong, Wenhe; Xue, J S; Greedan, J E ^[1]

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1. McMaster Univ., Hamilton, Ontario (Canada)

Single crystals of Sr{sub 1.5}La{sub 1.5}V{sub 2}O{sub 7} (Sr{sub 3}Ti{sub 2}O{sub 7}-type) and Sr{sub 4}V{sub 3}O{sub 9.7} (Sr{sub 4}Ti{sub 3}O{sub 10}-type) have been grown by a melt method in molybdenum crucibles at high temperatures and from a strontium borate flux. Crystal structures have been refined from single crystal X-ray data. The crystals are large enough for resistivity measurements: Sr{sub 4}V{sub 3}O{sub 9.7} is metallic down to 4.2 K, while Sr{sub 1.5}La{sub 1.5}V{sub 2}O{sub 7} is a semiconductor. A possible correlation exists between the observed electrical properties and the degree of distortion in the V-O polyhedra.

• OSTI ID: 5566696
• Journal Information: Journal of Solid State Chemistry; (United States), Vol. 91:1, Issue 1; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
STRONTIUM OXIDES
CRYSTAL GROWTH
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
VANADIUM OXIDES
LATTICE PARAMETERS
MONOCRYSTALS
SPACE GROUPS
ULTRALOW TEMPERATURE
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTALS
DIFFRACTION
ELECTRICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SCATTERING
STRONTIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS
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