A new high pressure form of Ba3NiSb2O9

In the search of an experimental realization of quantum spin liquid phases we have synthesized polycrystalline samples of Ba3NiSb2O9 under high pressure–high temperature conditions. Combining X-ray powder diffraction, neutron powder diffraction and precession electron diffraction we show that the ob...

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Bibliographic Details
Published in:Journal of solid state chemistry 2016-05, Vol.237, p.166-173
Main Authors: Darie, Céline, Lepoittevin, Christophe, Klein, Holger, Kodjikian, Stéphanie, Bordet, Pierre, Colin, Claire V., Lebedev, Oleg I., Deudon, Catherine, Payen, Christophe
Format: Article
Language:English
Subjects:
Condensed Matter
High pressure–high temperature synthesis
Oxydes
Physics
Quantum spin liquid phases
Strongly Correlated Electrons
TEM
X-ray and neutron diffraction
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Summary:In the search of an experimental realization of quantum spin liquid phases we have synthesized polycrystalline samples of Ba3NiSb2O9 under high pressure–high temperature conditions. Combining X-ray powder diffraction, neutron powder diffraction and precession electron diffraction we show that the obtained phase isn't hexagonal as reported in the literature, but trigonal. This new structure shows triangular Ni planes, but only in domains of sizes of the order of 10 nm. It therefore is still interesting as a potential candidate for a quantum spin liquid. Synthesis under high pressure of a new form of Ba3NiSb2O9 : a promising candidate for a quantum spin liquid. Triangular Ni-planes can effectively be present in this structure but only in domains of up to 10nm in size. [Display omitted]
ISSN:0022-4596
1095-726X
DOI:10.1016/j.jssc.2016.02.011