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Reference X-ray powder diffraction pattern of a high-pressure phase, CaCo2O4

Published online by Cambridge University Press:  29 February 2012

W. Wong-Ng ,
J. A. Kaduk  and
M. Isobe
W. Wong-Ng*
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899
J. A. Kaduk
Affiliation:
Ceramics Division, National Institute of Standards and Technology, Gaithersburg, Maryland 20899 and Poly Crystallography Inc., Naperville, Illinois 60540-5407
M. Isobe
Affiliation:
Superconducting Materials Center, National Institute for Materials Science, Isukuba 305-0044, Japan
*
a)Author to whom correspondence should be addressed. Electronic mail: winnie.wong-ng@nist.gov
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Abstract

This paper reports a reference X-ray powder diffraction pattern for a high-pressure phase, CaCo2O4, which has been reported recently to have a large Seebeck coefficient. The structure of CaCo2O4 is orthorhombic with space group Pnma, a=8.789(2) Å, b=2.9006(7) Å, c=10.282(3) Å, V=262.43 Å3, and Dc=5.62 g/cm3. This phase crystallizes in the CaFe2O4-type structure and consists of an edge- and corner-shared CoO6 octahedral network. The reference pattern has been submitted to the Powder Diffraction File (PDF).

Keywords

high-pressure CaCo2 O4 phasethermoelectric oxidereference XRD pattern
Type
New Diffraction Data
Information
Powder Diffraction , Volume 24 , Issue 4 , December 2009 , pp. 343 - 346
Copyright
Copyright © Cambridge University Press 2009

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