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High Pressure Synchrotron Diffraction of KCa2Nb3O10, a Layered Perovskite Compound

Published online by Cambridge University Press:  10 February 2011

K. A. Steiner  and
W. T. Petuskey
K. A. Steiner
Affiliation:
Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ, 85287
W. T. Petuskey
Affiliation:
Department of Chemistry and Biochemistry, Arizona State University, Tempe, AZ, 85287
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Abstract

High pressure synchrotron x-ray diffraction experiments were conducted on KCa2Nb3O10, to determine lattice constants as a function of pressure. A diamond anvil cell was used to produce pressures up to 66 GPa. A phase transition occurred at 13.5 GPa. From the lattice constants, linear compressibilities of 8.55 × 10-4 GPa-1 in the a direction, -9.40 × 10-4 GPa-1 in the b direction, and 142 × 10-4 GPa-1 in the c direction, and a bulk modulus of 68.5 GPa were found for the lower pressure orthorhombic phase.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 524: Symposium V – Application of Synchrotron Radiation Techniques…IV , 1998 , 133
Copyright
Copyright © Materials Research Society 1998

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