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X-ray determination of crystallite size and effect of lattice strain on Debye–Waller factors of platinum nano powders

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Abstract

In the present study, nano platinum particles were produced by ball milling process. The lattice strains in platinum (Pt) powders produced by milling have been analysed by X-ray powder diffraction. The lattice strain (\({\varepsilon}\)) and Debye-Waller factor (B) are determined from the half-widths and integrated intensities of the Bragg reflections. In Pt, the Debye–Waller factor is found to increase with lattice strain. From the correlation between the strain and effective Debye–Waller factor, the Debye–Waller factors for zero strain have been estimated for Pt. The variation of energy of vacancy formation as a function of lattice strain has been studied.

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Acknowledgements

The authors are grateful to the referee for suggestions. The authors thank the University Grants Commission, New Delhi, for financial assistance under special assistance programme (SAP) No. F.530/8/DRS/2009(SAP-I).

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Authors and Affiliations

  1. Department of Physics, Kakatiya University, Warangal, 506 009, India

    E PURUSHOTHAM & N GOPI KRISHNA

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  1. E PURUSHOTHAM
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  2. N GOPI KRISHNA
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Correspondence to E PURUSHOTHAM.

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PURUSHOTHAM, E., KRISHNA, N.G. X-ray determination of crystallite size and effect of lattice strain on Debye–Waller factors of platinum nano powders. Bull Mater Sci 36, 973–976 (2013). https://doi.org/10.1007/s12034-013-0553-1

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  • DOI: https://doi.org/10.1007/s12034-013-0553-1

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