Anharmonicity-induced first-order isostructural phase transition of zirconium under pressure
Journal Article
·
· Physical Review B
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
- Univ. of Chicago, IL (United States). Center for Advanced Radiation Sources (CARS)
We have performed a detailed x-ray diffraction structural study of Zr under pressure and unambiguously identify the existence of a first-order isostructural bcc-to-bcc phase transition near 58 GPa. First-principles quantum molecular dynamics calculations support the existence of this phase transition, in excellent agreement with experimental results, triggered by anharmonic effects. Lastly, our results highlight the potential ubiquity of anharmonically driven isostructural transitions within the periodic table under pressure and call for follow-up experimental and theoretical studies.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC52-07NA27344; FG02-94ER14466; AC02-05CH11231; AC02-06CH11357; 18-LW-036
- OSTI ID:
- 1497261
- Alternate ID(s):
- OSTI ID: 1484320; OSTI ID: 1656482
- Report Number(s):
- LLNL-JRNL-748459; PRBMDO; 932874
- Journal Information:
- Physical Review B, Vol. 98, Issue 22; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Cited by: 13 works
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