High-Pressure Structural Changes in the Gd2Zr2O7 Pyrochlore
Journal Article
·
· Physical Review B: Condensed Matter and Materials Physics
Pressure-induced structural changes in Gd2Zr2O7 pyrochlore have been investigated at pressures up to 43GPa by synchrotron x-ray diffraction and Raman scattering measurements. With increasing pressure, the ordered pyrochlore begins to transform to a disordered defect-fluorite-type (cubic) structure up to 15GPa . Above 15GPa , a high-pressure (HP) phase forms that has a distorted defect-fluorite-structure of lower symmetry. Upon release of pressure, the HP phase is not stable and gradually transforms back to the cubic defect-fluorite structure.
- Research Organization:
- Brookhaven National Lab. (BNL), Upton, NY (United States). National Synchrotron Light Source
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- DE-AC02-98CH10886
- OSTI ID:
- 960010
- Report Number(s):
- BNL-82996-2009-JA; PRBMDO; TRN: US1005867
- Journal Information:
- Physical Review B: Condensed Matter and Materials Physics, Vol. 76, Issue 21; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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