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Structure, Bonding, and Phase Relations in Bi2Sn2O7 and Bi2Ti2O7 Pyrochlores: New Insights from High Pressure and High Temperature Studies

DOI: 10.1021/ic200841v DOI Help

Authors: Ashkan Salamat (University College London) , Andrew Hector (University of Southampton) , Paul Mcmillan (University College London) , Clemens Ritter (Institut Laue-Langevin)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Inorganic Chemistry , VOL 50 (23)

State: Published (Approved)
Published: November 2011
Diamond Proposal Number(s): 694

Abstract: The รข-Bi2Sn2O7 structure is solved using high temperature powder neutron diffraction data. Under compression Bi2Ti2O7 does not undergo any phase changes, but Bi2Sn2O7 undergoes a similar series of changes as those observed during heating. A discussion of the origins of the Bi displacements that are linked to the dielectric properties of Bi pyrochlores, and of their ordering, is presented.

Subject Areas: Chemistry

Instruments: I15-Extreme Conditions