Low Temperature Symmetry of Pyrochlore Oxide Cd2Re2O7

Preprint

20 July 2002

preprint
Published by arXiv in arXiv

Abstract

We report the X-ray study for the pyrochlore oxide Cd2Re2O7. Two symmetry-lowering structural transitions were observed at Ts1=200K and Ts2=120K. The former is of the second order from the ideal cubic pyrochlore structure with space group Fd-3m to a tetragonally distorted structure with I-4m2, while the latter is of the first order likely to another tetragonal space group I4122. We discuss the feature of the lattice deformation.

Keywords

PYROCHLORE OXIDE CD2RE2O7
TEMPERATURE SYMMETRY
DEFORMATION
RAY STUDY
SPACE

All Related Versions

Version 1, 2002-07-20, ArXiv
Version 2, 2002-08-09, ArXiv
Published version: Journal of the Physics Society Japan, 71 (11), 2598.

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