Lattice parameter and thermal expansion of CsCl and CsBr by x-ray powder diffraction. I. Thermal expansion of CsCl from room temperature to 90° K
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The thermal expansion coefficients of CsCl at eight different temperatures between room temperature and 90° K are presented. The lattice parameters obtained from the observed Bragg angles with the use of Bragg formula were extrapolated to 90° using the Nelson-Riley extrapolation scheme to minimize the systematic errors. The true lattice parameters thus obtained at each temperature were used to obtain the thermal expansion coefficients and these results are compared with earlier interferometric measurements.
Volume 96, 2022
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