European Journal of Mineralogy
European Journal of Mineralogy
European Journal of Mineralogy
Articles | Volume 37, issue 5
Articles | Volume 37, issue 5
https://doi.org/10.5194/ejm-37-699-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/ejm-37-699-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 37, issue 5
Research article
 | 
10 Oct 2025
Research article |  | 10 Oct 2025

High-pressure behaviour of a CaIrO3 perovskite-type structure

Tiziana Boffa Ballaran, Kanchana Kularatne, and Reidar G. Trønnes

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Short summary
Single-crystal X-ray diffraction has been used to characterise the structural properties of a CaIrO3 orthorhombic perovskite-type structure under ambient and high pressures. It has been found that the structure of this compound is more distorted than other CaO perovskites. Structural determination at high pressure also shows a peculiar compression behaviour that is different from the other CaO perovskites. This explains why this material is much stiffer than expected.
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