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Russian Journal of Physical Chemistry A

, Volume 93, Issue 6, pp 1024–1031 | Cite as

Mass-Spectrometric Study of Evaporation of Perovskite

  • S. I. ShornikovEmail author
CHEMICAL THERMODYNAMICS AND THERMOCHEMISTRY
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Abstract

The evaporation of perovskite CaTiO3 at 1700–2200 K was studied by the high-temperature mass-spectrometric Knudsen effusion method. The molecular components typical of simple oxides and a small amount of complex gaseous oxide CaTiO3 were identified in the gas phase over perovskite. The partial vapor pressures of the molecular components of the gas phase over perovskite were compared with those corresponding to simple oxides; it was found that the character of evaporation of perovskite is mainly affected by the calcium component.

Keywords:

Knudsen effusion mass spectrometric method evaporation thermodynamics perovskite 

Notes

ACKNOWLEDGMENTS

I am grateful to O.I. Yakovlev (Vernadskii Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences) for his constant interest in this study and useful discussions and to M.A. Nazarov (Vernadskii Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences) for his support during this work.

This study was financially supported by the Presidium of the Russian Academy of Sciences, program no. 7 “Experimental and theoretical studies of solar system and star planetary system objects. Transition processes in astrophysics” and by the Russian Foundation for Basic Research (grant no. 19-05-00801A).

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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  1. 1.Vernadskii Institute of Geochemistry and Analytical Chemistry, Russian Academy of SciencesMoscowRussia

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