High-pressure neutron diffraction study of the quasi-one-dimensional cuprate Sr{sub 2}CuO{sub 3}
- Department of Engineering Materials, University of Sheffield, Mappin Street, Sheffield S1 3JD (United Kingdom)
The crystal structure of the quasi-one-dimensional cuprate Sr{sub 2}CuO{sub 3} has been studied under high pressure using neutron powder diffraction methods. Full structure refinements were undertaken, using the Rietveld method, with data acquired between room pressure and 0.55(1) GPa at room temperature. The compressibility of Sr{sub 2}CuO{sub 3} is anisotropic, a consequence of the ordered nature of the anion vacancies in this material. The effect of high pressure and chemical substitution on the crystal structure of the Sr{sub 2-x}Ca{sub x}CuO{sub 3} system is discussed and it is suggested that the substitution of Sr{sup 2+} by Ca{sup 2+} may constitute a 'chemical pressure' effect in this solid solution. The availability of accurate bond length compressibility data for Sr{sub 2}CuO{sub 3} may now allow an appraisal of the effect of applied pressure on the remarkable electronic properties of this material, through appropriate band structure calculations.
- OSTI ID:
- 20662254
- Journal Information:
- Physical Review. B, Condensed Matter and Materials Physics, Vol. 70, Issue 21; Other Information: DOI: 10.1103/PhysRevB.70.214101; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
- Country of Publication:
- United States
- Language:
- English
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