Compressibility and phase transitions of potassium carbonate at pressures below 30 kbar


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Abstract

The compressibility of γ-K2CO3 within the pressure range of 0.001-23.3 kbar and room temperature was determined by in situ synchrotron powder diffraction measurements in diamond anvil cell. The modification of the diffraction pattern was fixed at P > 23.3 kbar. This modification can be explained by a reconstructive phase transition. The amorphization of the high pressure phase was fixed on decompression.

About the authors

P. N. Gavryushkin

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk National Research State University

Author for correspondence.
Email: gavryushkin@igm.nsc.ru
Russian Federation, Novosibirsk; Novosibirsk

S. V. Rashenko

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk National Research State University

Email: gavryushkin@igm.nsc.ru
Russian Federation, Novosibirsk; Novosibirsk

A. F. Shatskiy

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk National Research State University

Email: gavryushkin@igm.nsc.ru
Russian Federation, Novosibirsk; Novosibirsk

K. D. Litasov

Sobolev Institute of Geology and Mineralogy, Siberian Branch; Novosibirsk National Research State University

Email: gavryushkin@igm.nsc.ru
Russian Federation, Novosibirsk; Novosibirsk

A. I. Ancharov

Budker Institute of Nuclear Physics, Siberian Branch

Email: gavryushkin@igm.nsc.ru
Russian Federation, Novosibirsk

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