Evidence for the existence of a PbCO3-II phase from high pressure X-ray measurements
Journal Article
·
· Zeitschrift fuer Kristallographie
The high-pressure room temperature behavior of PbCO{sub 3} was investigated by angle-dispersive synchrotron powder diffraction up to 16.16(5) GPa. A phase transition to a high-pressure polymorph II of lead carbonate was observed at a pressure of approximately p{sub c} = 8.7 GPa. Thereby, the symmetry is reduced from orthorhombic Pmcn to monoclinic P12{sub 1}/c1. The cell parameters at p = 8.90(5) GPa are a = 5.101(1) {angstrom}, b = 8.303(3) {angstrom}, c = 5.602(2) {angstrom}, {beta} = 89.51(4){sup o}, Z = 4. The transformation is supposed to be of 2nd order.
- Research Organization:
- Brookhaven National Laboratory (BNL) National Synchrotron Light Source
- Sponsoring Organization:
- Doe - Office Of Science
- DOE Contract Number:
- AC02-98CH10886
- OSTI ID:
- 985816
- Report Number(s):
- BNL--93772-2010-JA; KC0401030
- Journal Information:
- Zeitschrift fuer Kristallographie, Journal Name: Zeitschrift fuer Kristallographie Journal Issue: 4 Vol. 225; ISSN ZKKKAJ; ISSN 0044-2968
- Country of Publication:
- United States
- Language:
- English
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