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Article

Structural Study of δ-AlOOH Up to 29 GPa

1
Bavarian Research Institute of Experimental Geochemistry and Geophysics, University of Bayreuth, D-95440 Bayreuth, Germany
2
Earth and Planets Laboratory, Carnegie Institution for Science, Washington, DC 20015, USA
3
Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
4
Laboratory for Multifunctional Ferroic Materials, Materials Department, ETH Zürich, 8093 Zürich, Switzerland
5
Laboratory of Crystallography, University of Bayreuth, D-95440 Bayreuth, Germany
*
Author to whom correspondence should be addressed.
Minerals 2020, 10(12), 1055; https://doi.org/10.3390/min10121055
Received: 16 July 2020 / Revised: 17 November 2020 / Accepted: 17 November 2020 / Published: 26 November 2020
(This article belongs to the Special Issue Minerals under Extreme Conditions)
A structure and equation of the state of δ-AlOOH has been studied at room temperature, up to 29.35 GPa, by means of single crystal X-ray diffraction in a diamond anvil cell using synchrotron radiation. Above ~10 GPa, we observed a phase transition with symmetry changes from P21nm to Pnnm. Pressure-volume data were fitted with the second order Birch-Murnaghan equation of state and showed that, at the phase transition, the bulk modulus (K0) of the calculated wrt 0 pressure increases from 142(5) to 216(5) GPa. View Full-Text
Keywords: AlOOH; diamond anvil cell; high pressure; extreme conditions; single crystal X-ray diffraction (SC-XRD) AlOOH; diamond anvil cell; high pressure; extreme conditions; single crystal X-ray diffraction (SC-XRD)
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MDPI and ACS Style

Simonova, D.; Bykova, E.; Bykov, M.; Kawazoe, T.; Simonov, A.; Dubrovinskaia, N.; Dubrovinsky, L. Structural Study of δ-AlOOH Up to 29 GPa. Minerals 2020, 10, 1055. https://doi.org/10.3390/min10121055

AMA Style

Simonova D, Bykova E, Bykov M, Kawazoe T, Simonov A, Dubrovinskaia N, Dubrovinsky L. Structural Study of δ-AlOOH Up to 29 GPa. Minerals. 2020; 10(12):1055. https://doi.org/10.3390/min10121055

Chicago/Turabian Style

Simonova, Dariia, Elena Bykova, Maxim Bykov, Takaaki Kawazoe, Arkadiy Simonov, Natalia Dubrovinskaia, and Leonid Dubrovinsky. 2020. "Structural Study of δ-AlOOH Up to 29 GPa" Minerals 10, no. 12: 1055. https://doi.org/10.3390/min10121055

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