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X-ray powder diffraction data of layered cobaltites with the compositions Ca3−xSrxCo4O9

Published online by Cambridge University Press:  05 March 2012

Sejin Yoon ,
O-Jong Kwon ,
Myung-Jin Jung ,
Jaeun Yoo ,
Chan Park  and
Keun Hwa Chae
Sejin Yoon
Affiliation:
Department of Materials Science and Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea
O-Jong Kwon
Affiliation:
Department of Materials Science and Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea
Myung-Jin Jung
Affiliation:
Department of Materials Science and Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea
Jaeun Yoo
Affiliation:
Department of Materials Science and Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea
Chan Park*
Affiliation:
Department of Materials Science and Engineering, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea and Research Institute of Advanced Materials, Seoul National University, Seoul 151-744, Korea
Keun Hwa Chae
Affiliation:
Nano Analysis Center, Korea Institute of Science and Technology, Seoul 136-791, Korea
*
a)Author to whom correspondence should be addressed. Electronic mail: [email protected]
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Abstract

Ca3−xSrxCo4O9 with different compositions (x=0, 0.15, 0.3, and 0.45) were synthesized from stoichiometric mixtures of Co3O4, CaCO3, and SrCO3, and their unit-cell parameters were determined. The powders were mixed with silicon standard powder, and XRD patterns were collected and analyzed using TOPAS. The compounds were determined to be monoclinic with space group of P2. Unit-cell parameters changed from a=4.8329(3) Å, b=4.5727(1) Å, c=10.8360(4) Å, and β=98.093(7)° when x=0, to a=4.8432(1) Å, b=4.6100(3) Å, c=10.8668(3) Å, and β=98.110(5)° when x=0.3. An unidentified second phase was observed when x=0.45.

Keywords

X-ray diffractionthermoelectric compoundlayered cobaltite
Type
New Diffraction Data
Information
Powder Diffraction , Volume 26 , Issue 3 , September 2011 , pp. 273 - 276
Copyright
Copyright © Cambridge University Press 2011

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