Publication Cover
High Pressure Research
An International Journal
Volume 43, 2023 - Issue 3
325
Views
0
CrossRef citations to date
0
Altmetric
Articles

Equation of state of KI up to 150 GPa

, , , &
Pages 251-261 | Received 05 Apr 2023, Accepted 01 Jul 2023, Published online: 23 Jul 2023
 

ABSTRACT

The equation of state of potassium iodide, KI, has been determined up to 156 GPa at 298 K by angular-dispersive X-ray diffraction in diamond-anvil-cell. Helium pressure transmitting medium was used to minimize non-hydrostatic stress on the sample. The B2 phase is stable at least between 2 and 156 GPa. Pressure–volume data were fitted using a Rydberg–Vinet equation of state. The volume, isothermal bulk modulus and its pressure derivative of B2-KI at ambient pressure are V0=79.2±2.5 Å3, K0=11.9±1.2 GPa and K0=6.01±0.11. It allows using KI as a pressure calibrant in high pressure experiments.

Acknowledgments

We acknowledge synchrotron ESRF for the provision of beamtime under proposal HC-5077 and synchrotron SOLEIL. We thank Florent Occelli for his help with samples loading.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 1,965.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.