Evidence for the existence of a PbCO3-II phase from high pressure X-ray measurements

Robert Minch; Lars Peters; Lars Ehm; Karsten Knorr; Oleg I. Siidra; Vitali Prakapenka; Przemyslaw Dera; Wulf Depmeier

doi:10.1524/zkri.2010.1194

Evidence for the existence of a PbCO₃-II phase from high pressure X-ray measurements

Robert Minch
, Lars Peters
, Lars Ehm
, Karsten Knorr
, Oleg I. Siidra
, Vitali Prakapenka
, Przemyslaw Dera
, Wulf Depmeier

Geosciences

Kiel University
RWTH Aachen University
Bruker Corporation
St. Petersburg State University
The University of Chicago

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

The high-pressure room temperature behavior of PbCO₃ 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 ρ_c = 8.7 GPa. Thereby, the symmetry is reduced from orthorhombic Pmcn to monoelinie P12₁/c1. The cell parameters at ρ = 8.90(5) GPa are a = 5.101(1) Å, b = 8.303(3) Å, c = 5.602(2) Å, β = 89.51(4)°, Z = 4. The transformation is supposed to be of 2nd order.

Original language	English
Pages (from-to)	146-152
Number of pages	7
Journal	Zeitschrift fur Kristallographie
Volume	225
Issue number	4
DOIs	https://doi.org/10.1524/zkri.2010.1194
State	Published - Apr 2010

Keywords

High pressure
Lead carbonate
Phase transition
X-ray diffraction

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10.1524/zkri.2010.1194

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title = "Evidence for the existence of a PbCO3-II phase from high pressure X-ray measurements",

abstract = "The high-pressure room temperature behavior of PbCO3 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 ρc = 8.7 GPa. Thereby, the symmetry is reduced from orthorhombic Pmcn to monoelinie P121/c1. The cell parameters at ρ = 8.90(5) GPa are a = 5.101(1) {\AA}, b = 8.303(3) {\AA}, c = 5.602(2) {\AA}, β = 89.51(4)°, Z = 4. The transformation is supposed to be of 2nd order.",

keywords = "High pressure, Lead carbonate, Phase transition, X-ray diffraction",

author = "Robert Minch and Lars Peters and Lars Ehm and Karsten Knorr and Siidra, \{Oleg I.\} and Vitali Prakapenka and Przemyslaw Dera and Wulf Depmeier",

year = "2010",

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doi = "10.1524/zkri.2010.1194",

language = "English",

volume = "225",

pages = "146--152",

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T1 - Evidence for the existence of a PbCO3-II phase from high pressure X-ray measurements

AU - Minch, Robert

AU - Peters, Lars

AU - Ehm, Lars

AU - Knorr, Karsten

AU - Siidra, Oleg I.

AU - Prakapenka, Vitali

AU - Dera, Przemyslaw

AU - Depmeier, Wulf

PY - 2010/4

Y1 - 2010/4

N2 - The high-pressure room temperature behavior of PbCO3 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 ρc = 8.7 GPa. Thereby, the symmetry is reduced from orthorhombic Pmcn to monoelinie P121/c1. The cell parameters at ρ = 8.90(5) GPa are a = 5.101(1) Å, b = 8.303(3) Å, c = 5.602(2) Å, β = 89.51(4)°, Z = 4. The transformation is supposed to be of 2nd order.

AB - The high-pressure room temperature behavior of PbCO3 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 ρc = 8.7 GPa. Thereby, the symmetry is reduced from orthorhombic Pmcn to monoelinie P121/c1. The cell parameters at ρ = 8.90(5) GPa are a = 5.101(1) Å, b = 8.303(3) Å, c = 5.602(2) Å, β = 89.51(4)°, Z = 4. The transformation is supposed to be of 2nd order.

KW - High pressure

KW - Lead carbonate

KW - Phase transition

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/77956219440

U2 - 10.1524/zkri.2010.1194

DO - 10.1524/zkri.2010.1194

M3 - Article

AN - SCOPUS:77956219440

SN - 0044-2968

VL - 225

SP - 146

EP - 152

JO - Zeitschrift fur Kristallographie

JF - Zeitschrift fur Kristallographie

IS - 4

ER -

Evidence for the existence of a PbCO₃-II phase from high pressure X-ray measurements

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Keywords

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