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Measuring Single-Crystal Diffuse Neutron Scattering on the Wombat High-Intensity Powder Diffractometer

  • Symposium: Neutron and X-Ray Studies of Advanced Materials IV
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Abstract

Single-crystal diffuse scattering was collected on the Wombat high-intensity powder diffractometer at the OPAL reactor at the Bragg Institute. The difficulty in measuring diffuse scattering comes from its relatively low intensity compared to the Bragg peaks, a factor of \(10^{3}\) to \(10^{4}\) smaller. Wombat allows collection of diffuse scattering due to its high intensity and large two-dimensional detector. Diffuse scattering data from yttria-stabilized cubic zirconia (YCSZ, \(\hbox{Y}_2\hbox{O}_3\) stabilized \(\hbox{ZrO}_2\)) and \(\hbox{PbZn}_{1/3}\hbox{Nb}_{2/3}\hbox{O}_3\) (PZN) were successfully collected, the latter at a range of temperatures. The data were processed, normalized, and background subtracted to reconstruct flat reciprocal space sections with a minimum of artifacts. The strategies used to tackle the collection of neutron diffuse scattering and the way in which they are implemented will be discussed. The results show that the neutron powder diffractometer with a continuous detector is capable of collecting high-quality diffuse scattering data.

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Acknowledgements

We acknowledge the Australian Research Council for support through its Discovery Projects program and the Australian Institute of Nuclear Science and Engineering for their financial support. DJG would like to thank Dr. A.P. Heerdegen and Professor T.R. Welberry, Research School of Chemistry, Australian National University, for their advice and assistance.

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Authors and Affiliations

  1. Research School of Physics and Engineering, Australian National University, Canberra, 0200, Australia

    R. E. Whitfield (PhD Student)

  2. Research School of Chemistry, Australian National University, Canberra, 0200, Australia

    D. J. Goossens (Research Fellow)

  3. Bragg Institute, Australian Nuclear Science and Technology Organisation, Lucas Heights, Sydney, 2234, Australia

    A. J. Studer (Senior Research Scientist)

  4. School of Engineering, The University of Newcastle, Newcastle, NSW, 2308, Australia

    J. S. Forrester (Research Associate)

Authors
  1. R. E. Whitfield
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  2. D. J. Goossens
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  3. A. J. Studer
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  4. J. S. Forrester
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Correspondence to R. E. Whitfield.

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Manuscript submitted February 14, 2011.

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Whitfield, R.E., Goossens, D.J., Studer, A.J. et al. Measuring Single-Crystal Diffuse Neutron Scattering on the Wombat High-Intensity Powder Diffractometer. Metall Mater Trans A 43, 1423–1428 (2012). https://doi.org/10.1007/s11661-011-0740-x

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