Robin Fréville, A. Dewaele, N. Guignot, G. Garbarino, M. Mezouar
{"title":"Equation of state of KI up to 150 GPa","authors":"Robin Fréville, A. Dewaele, N. Guignot, G. Garbarino, M. Mezouar","doi":"10.1080/08957959.2023.2233680","DOIUrl":null,"url":null,"abstract":"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 , GPa and . It allows using KI as a pressure calibrant in high pressure experiments.","PeriodicalId":12864,"journal":{"name":"High Pressure Research","volume":null,"pages":null},"PeriodicalIF":1.2000,"publicationDate":"2023-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"High Pressure Research","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1080/08957959.2023.2233680","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
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Abstract
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 , GPa and . It allows using KI as a pressure calibrant in high pressure experiments.
期刊介绍：
High Pressure Research is the leading journal for research in high pressure science and technology. The journal publishes original full-length papers and short research reports of new developments, as well as timely review articles. It provides an important forum for the presentation of experimental and theoretical advances in high pressure science in subjects such as:
condensed matter physics and chemistry
geophysics and planetary physics
synthesis of new materials
chemical kinetics under high pressure
industrial applications
shockwaves in condensed matter
instrumentation and techniques
the application of pressure to food / biomaterials
Theoretical papers of exceptionally high quality are also accepted.
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