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Title: High pressure structure studies of 6H-SrIrO{sub 3} and the octahedral tilting in 3C-SrIrO{sub 3} towards a post-perovskite

Abstract

The high pressure behaviors of the two perovskite structures (hexagonal 6H-SrIrO{sub 3} and orthorhombic 3C-SrIrO{sub 3}) have been studied in diamond anvil cells to 43 and 60 GPa, respectively, using synchrotron powder X-ray diffraction. 6H-SrIrO{sub 3} was first synthesized at ambient pressure and subsequently transformed into 3C-SrIrO{sub 3} in a large volume press at 8.8 GPa and 1000 °C. Both polymorphs were found to retain the initial symmetry up to the highest pressures measured, but in the case of 6H-SrIrO{sub 3}, two anomalies were identified: a change in the axial compressibilities at 24 GPa and a change in both the axial and volume compressibilities at 32 GPa. Fitting a 3rd order Birch-Murnaghan equation of state to the obtained P-V data yielded bulk moduli of K{sub 0}=151.5(12) GPa (fitted range 0

Authors:
; ;  [1];  [2];  [1]
  1. Center for Materials Crystallography (CMC), Department of Chemistry and iNANO, Aarhus University, Langelandsgade 140, 8000 Aarhus C (Denmark)
  2. ID27 Beamline, European Synchrotron Radiation Facility, 71 Avenue des Martyrs, 38043 Grenoble (France)
Publication Date:
OSTI Identifier:
22584106
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Solid State Chemistry; Journal Volume: 238; Other Information: Copyright (c) 2016 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE; COMPARATIVE EVALUATIONS; COMPRESSIBILITY; COMPRESSION; EQUATIONS OF STATE; IRIDIUM OXIDES; ORTHORHOMBIC LATTICES; PEROVSKITE; POWDERS; PRESSES; PRESSURE RANGE GIGA PA; PRESSURE RANGE MEGA PA 10-100; STRONTIUM COMPLEXES; X RADIATION; X-RAY DIFFRACTION

Citation Formats

Kronbo, Camilla H., Nielsen, Morten B., Kevy, Simone M., Parisiades, Paraskevas, and Bremholm, Martin, E-mail: bremholm@chem.au.dk. High pressure structure studies of 6H-SrIrO{sub 3} and the octahedral tilting in 3C-SrIrO{sub 3} towards a post-perovskite. United States: N. p., 2016. Web. doi:10.1016/J.JSSC.2016.03.012.
Kronbo, Camilla H., Nielsen, Morten B., Kevy, Simone M., Parisiades, Paraskevas, & Bremholm, Martin, E-mail: bremholm@chem.au.dk. High pressure structure studies of 6H-SrIrO{sub 3} and the octahedral tilting in 3C-SrIrO{sub 3} towards a post-perovskite. United States. doi:10.1016/J.JSSC.2016.03.012.
Kronbo, Camilla H., Nielsen, Morten B., Kevy, Simone M., Parisiades, Paraskevas, and Bremholm, Martin, E-mail: bremholm@chem.au.dk. Wed . "High pressure structure studies of 6H-SrIrO{sub 3} and the octahedral tilting in 3C-SrIrO{sub 3} towards a post-perovskite". United States. doi:10.1016/J.JSSC.2016.03.012.
@article{osti_22584106,
title = {High pressure structure studies of 6H-SrIrO{sub 3} and the octahedral tilting in 3C-SrIrO{sub 3} towards a post-perovskite},
author = {Kronbo, Camilla H. and Nielsen, Morten B. and Kevy, Simone M. and Parisiades, Paraskevas and Bremholm, Martin, E-mail: bremholm@chem.au.dk},
abstractNote = {The high pressure behaviors of the two perovskite structures (hexagonal 6H-SrIrO{sub 3} and orthorhombic 3C-SrIrO{sub 3}) have been studied in diamond anvil cells to 43 and 60 GPa, respectively, using synchrotron powder X-ray diffraction. 6H-SrIrO{sub 3} was first synthesized at ambient pressure and subsequently transformed into 3C-SrIrO{sub 3} in a large volume press at 8.8 GPa and 1000 °C. Both polymorphs were found to retain the initial symmetry up to the highest pressures measured, but in the case of 6H-SrIrO{sub 3}, two anomalies were identified: a change in the axial compressibilities at 24 GPa and a change in both the axial and volume compressibilities at 32 GPa. Fitting a 3rd order Birch-Murnaghan equation of state to the obtained P-V data yielded bulk moduli of K{sub 0}=151.5(12) GPa (fitted range 0},
doi = {10.1016/J.JSSC.2016.03.012},
journal = {Journal of Solid State Chemistry},
number = ,
volume = 238,
place = {United States},
year = {Wed Jun 15 00:00:00 EDT 2016},
month = {Wed Jun 15 00:00:00 EDT 2016}
}