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The structure of Cd2Os2O7 through the metal-semiconductor transition by powder neutron diffraction

The structure of Cd2Os2O7 through the metal-semiconductor transition by powder neutron diffraction
The structure of Cd2Os2O7 through the metal-semiconductor transition by powder neutron diffraction
Samples of non-absorbing Cd2Os2O7 have been studied using powder neutron diffraction over the temperature range 12-298 K. Lattice parameters show a discontinuity at T-MI (225 K) consistent with the transition from low temperature semiconducting to metallic behaviour. Changes in structural features occur in the range 12-225 K with a decrease in the Os-O bond lengths and formation of slightly more regular OsO6 octahedra. No evidence of long range magnetic ordering was observed down to 12 K.
colossal magnetoresistance, tl2mn2o7
2373-2377
Reading, Johnathan
736f758c-0db6-4303-b89a-8ffde54c7bcc
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4
Reading, Johnathan
736f758c-0db6-4303-b89a-8ffde54c7bcc
Weller, Mark T.
36a60b56-049f-466c-a1d7-39d6b0d85ff4

Reading, Johnathan and Weller, Mark T. (2001) The structure of Cd2Os2O7 through the metal-semiconductor transition by powder neutron diffraction. Journal of Materials Chemistry, 11 (9), 2373-2377. (doi:10.1039/b102335g).

Record type: Article

Abstract

Samples of non-absorbing Cd2Os2O7 have been studied using powder neutron diffraction over the temperature range 12-298 K. Lattice parameters show a discontinuity at T-MI (225 K) consistent with the transition from low temperature semiconducting to metallic behaviour. Changes in structural features occur in the range 12-225 K with a decrease in the Os-O bond lengths and formation of slightly more regular OsO6 octahedra. No evidence of long range magnetic ordering was observed down to 12 K.

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Published date: 2001
Keywords: colossal magnetoresistance, tl2mn2o7
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Identifiers

Local EPrints ID: 19609
URI: http://eprints.soton.ac.uk/id/eprint/19609
DOI: doi:10.1039/b102335g
PURE UUID: a3ca205f-80bd-4cd9-bb9b-63453ca62247

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Date deposited: 14 Feb 2006
Last modified: 15 Mar 2024 06:17

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Contributors

Author: Johnathan Reading
Author: Mark T. Weller

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