Hostname: page-component-cd9895bd7-jn8rn Total loading time: 0 Render date: 2024-12-27T13:53:45.987Z Has data issue: false hasContentIssue false

High-Pressure Powder Diffraction Using an Image-Plate Area Detector

Published online by Cambridge University Press:  06 March 2019

Richard J. Nelmes
Affiliation:
Department of Physics The University of Edinburgh Edinburgh, U.K.
Malcolm I. McMahon
Affiliation:
Department of Physics The University of Edinburgh Edinburgh, U.K.
Get access

Extract

Modern synchrotron sources, and recent developments in experimental techniques, are allowing significant: progress to be made at present in the quality of crystal-structure infonnation at high pressure. Though there are exciting prospects for single-crystal work, especially using Laue techniques, most of the recent advances have been made in powder diffraction. In any case, high-pressure diffraction studies often require powder techniques because single crystals fail to survive the large density changes that accompany many pressure-induced phase transitions. In this paper, we focus on angle-dispersive (AD) powder diffraction on synchrotron sources.

Type
Research Article
Copyright
Copyright © International Centre for Diffraction Data 1993

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. For example, McWhan, D.B. and Marezio, M., Structure and superconductivity of the high-pressure phases of InSb, J. Chem Pkys. 45: 2508, (1966); A.N. Mariano and Warekois, E.P., High-pressure phases of some compounds of groups II-VI, Science 142: 672, (1963); Jamieson, J.C., Crystal structures at high pressures of metallic modifications of silicon and germanium, Science 139: 762, (1963); J.S. Kasper and Richards, S.M., The crystal structures of new forms of silicon and germanium, Acta Cryst. 17: 752, (1964).Google Scholar
2. Rietveld, H.M., A profile refinement method for nuclear and magnetic structures, J. Appl. Cryst. 2: 65, (1969).Google Scholar
3. Shimomura, O., Takemura, K., Fujihisa, H., Fujii, Y., Ohishi, Y.. Kikegawa, T., Amemiya, Y. and Matsushita, T., Application of an imaging plate to high-pressure x-ray study with a diamond anvil cell. Rev. Sci. Instrum. 63: 967, (1992).Google Scholar
4. Nelmes, R.J., Hatton, P.D., McMahon, M.I., Piles, R.O., Crain, J., Cernik, R. J. and Bushnell-Wye, G., Angle-dispersive powder-diffraction techniques for crystal structure refinement at high pressure, Rev. Sci. Instrum. 63: 1039, (1992)Google Scholar
5. Piltz, R.O., McMahon, M.J., Crain, J., Hatton, P.D., Nelmes, R.J., Cernik, R. J. and Bushnell-Wye, G., An imaging plate system for high-pressure powder diffraction: the data processing side, Rev. Sci. Instrum. 63: 700, (1992).Google Scholar
6. Nelmes, R.J., McMahon, M.L., Hatton, P.D., Piltz, R.O., Crain, J., Cernik, R. J. and G. Bushnell-Wye, Angle-dispersive powder diffraction at high pressure using an image plate area detector, High Pressure Research 8: 677, (1992).Google Scholar
7. Adams, D.M., Diacell Products, 54 Ash Tree Road, Leicester, UK.Google Scholar
8. Nelmes, R.J., McMahon, M.I., Wright, N. G. and Allan, D.R., Observation of a cinnabar structure in CdTc, Phys. Rev. 5 48: 1314, (1993)Google Scholar
9. Nelmes, R.J., McMahon, M. L.. Hatton, P.D., Crain, J. and Piltz, R.O., The phase transitions in InSb to 5GPa, Phys. Rev. 547: 35, (1993)Google Scholar
10. Nelmes, R.J., McMahon, M.L., Hatton, P.D., Piltz, R. O. and J. Crain, New structural results for the high-pressure phases of InSb, Jpn. J. Appl. Phys. 32, Suppl. 32-1:1, (1993).Google Scholar
11. McMahon, M.I., Nelmes, R.J., Wright, N. G. and Allan, D.R., Phase transitions in CdTe to 5GPa, In Press Phys. Rev. B (Nov. 1993).Google Scholar
12. Vohra, Y.K., Weir, S. T. and Ruoff, A.L., High-pressure transitions and equation of state of the III-V compound InAs up to 27GPa, Phys. Rev. B 31: 7344, (1985).Google Scholar
13. Wright, N.G., McMahon, M.L., Nelmes, R.J., and San-Miguel, A., Crystal structure of the cinnabar phase of HgTe, In Press Phys. Rev. B (Nov. 1993).Google Scholar
14. San-Miguel, A., Wright, N.G., McMahon, M.I., and Nelmes, R.J., Pressure dependence of the cinnabar structure of HgTe, To be submitted to Phys. Rev. B (1993),Google Scholar
15. McMahon, M.I. and Nelmes, R.J., New high-pressure phase of silicon, Phys. Rev. B 47: 8337, (1993).Google Scholar
16. Nelmes, R.J., McMahon, M.L., Wright, N. G. and Allan, D.R., Equation of stale of BC8 and ST12 germanium, Submitted to Phys. Rev. B (1993).Google Scholar
17. Nclmes, R.J., McMahon, M.I., Wright, N.G., Allan, D.R., and Loveday, J.S., Stability and crystal structure of BC8 germanium. Phys. Rev. B 48: 9883, (1993).Google Scholar
18. Wright, N.G., McMahon, M.I., and Nelmes, R.J., Microstiuctural aspects of reconstructive phase transitions under pressure, Proceedings of the Joint AIRAPT/APS Conference 1993.Google Scholar
19. Hausermann, D., A sign of things to come, ECSRF Newsletter No. 18, July 1993 Google Scholar