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Thermal atomic displacement parameters of SrO

Published online by Cambridge University Press:  05 March 2012

J. Bashir ,
Rao Tahir A. Khan ,
N. M. Butt  and
G. Heger
J. Bashir
Affiliation:
Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan
Rao Tahir A. Khan
Affiliation:
Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan
N. M. Butt
Affiliation:
Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan
G. Heger
Affiliation:
Laboratoire Leon Brillouin, CE Saclay, 9119 Gif-sur-Yvette, France
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Abstract

The atomic displacement parameters of individual ions in SrO have been determined from the Rietveld analysis of high-resolution powder neutron diffraction data. As the neutron velocity is smaller than the sound velocity in SrO, the intensity data was not corrected for the effect of thermal diffuse scattering. The room temperature value of overall isotropic thermal displacement parameters was B=0.57(2) Å2; which corresponds to Debye temperature, Θ of 242(4) K. The results are compared with experimental and theoretical estimates.

Type
Technical Articles
Information
Powder Diffraction , Volume 17 , Issue 3 , September 2002 , pp. 222 - 224
Copyright
Copyright © Cambridge University Press 2002

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