Abstract
The temperature variation of the Debye-Waller factors of Cs+ and Cl− ions in CsCl powder has been studied using X-ray powder diffraction. A continuous flow cryostat has been used to record the diffractograms and the integrated intensities of the Bragg peaks at different temperatures have been obtained. The integrated intensities of the odd and even reflections have been analysed following the structure of the CsCl compound and the Debye-Waller factors of the Cs+ and Cl− ions have been estimated. The results have been verified by structure factor least squares refinement. Theoretical shell model lattice dynamical calculations have been done using a 7-parameter model in the harmonic approximation and the values compared with the present X-ray measurements.
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References
Agarwal B S and Hardy J R 1974Solid State Commun. 14 1038
Ahmed A A Z, Smith H G, Wakabayashi N and Wilkinson M K 1972Phys. Rev. B6 3956
Bailey A C and Yates B 1967Philos. Mag. 16 1241
Carbatos C and Prevot B 1972Can. J. Phys. 50 122
Chipman D R and Paskin A J 1959J. Appl. Phys. 30 1998
Ganesan V and Girirajan K S 1986Pramana — J. Phys. 27 469
Haridasan T M and Krishnamurthy N 1968Indian J. Pure Appl. Phys. 6 407
Jindal R and Mahesh P S 1975Indian J. Pure Appl. Phys. 13 823
Lal H H and Verma M P 1972J. Phys. C5 1038
Sharan B and Tiwari L M 1964Phys. Status Solidi 7 39
Srinivasan R and Girirajan K S 1982Pramana — J. Phys. 19 203
Srivastava G P and Dayal B 1967Can. J. Phys. 45 3339
Vetelino J F, Mitra S S and Nanyoshi K V 1973Phys. Rev. 87 4001
Warren B E 1969X-ray diffraction (New York: Addison-Wesley)
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Ganesan, V., Girirajan, K.S. Temperature variation of the Debye-Waller factors of metal and halide ions in CsCl and CsBr powders by X-ray diffraction. I. Debye-Waller factors of Cs+ and Cl− ions in CsCl from room temperature to 90°K. Pramana - J Phys 30, 331–336 (1988). https://doi.org/10.1007/BF02846743
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DOI: https://doi.org/10.1007/BF02846743
Keywords
- Cryostat
- powder diffraction
- Debye-Waller factor
- structure factor least square
- lattice dynamics
- caesium chloride
- thermal diffuse scattering correction