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Analysis of X-Ray Powder Diffraction Patterns of Perovskite-Like PrNiO3†

Published online by Cambridge University Press:  10 January 2013

T. C. Huang ,
W. Parrish ,
J. B. Torrance  and
P. Lacorre
T. C. Huang
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120-6099, U.S.A.
W. Parrish
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120-6099, U.S.A.
J. B. Torrance
Affiliation:
IBM Research Division, Almaden Research Center, 650 Harry Road, San Jose, California 95120-6099, U.S.A.
P. Lacorre
Affiliation:
Laboratoire des Fluorures, U.A. CNRS 449, Université du Maine, Route de Laval, 72017 Le Mans, France
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Abstract

X-ray powder diffraction patterns of orthorhombic- and rhombohedral-distorted perovskite PrNiO3 obtained at room temperature, 200°, 400°, 500°, and 600°C were analyzed and evaluated. An examination of the diffraction profiles shows essentially no line broadening indicating that the PrNiO3 powders synthesized by solid state reaction are well-crystallized and probably strain-free. The reliability and accuracy of the patterns were evaluated, and the figures-of-merit were in triple digits for the 500° and 600°C patterns of the rhombohedral phase and double digits for the more complex orthorhombic diffraction patterns recorded at room-temperature, 200°, and 400°C. Values of lattice parameters refined from the observed diffraction peak positions agree with those obtained from the Rietveld whole-pattern fitting analysis to within 1–2 × 10−4.

Type
Research Article
Information
Powder Diffraction , Volume 6 , Issue 1 , March 1991 , pp. 36 - 39
Copyright
Copyright © Cambridge University Press 1991

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