تقرير
A new room-temperature equation of state of Bi up to 260 GPa
| العنوان: | A new room-temperature equation of state of Bi up to 260 GPa |
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| المؤلفون: | Campbell, Daniel J., Sneed, Daniel T., O'Bannon III, Earl F., Söderlind, Per, Jenei, Zsolt |
| سنة النشر: | 2023 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | At room temperature, bismuth undergoes several structural transitions with increasing pressure before taking on a body-centered cubic (bcc) phase at approximately 8 GPa. The bcc structure is stable to the highest measured pressure and its simplicity, along with its high compressibility and atomic number, make it an enticing choice as a pressure calibrant. We present three data sets on the compression of bismuth in a diamond anvil cell in a neon pressure medium, up to a maximum pressure of about 260 GPa. The use of a soft pressure medium reduces deviatoric stress when compared to previous work. With an expanded pressure range, higher point density, and a decreased uniaxial stress component, we are able to provide more reliable equation of state (EOS) parameters. We also conduct density functional theory (DFT) electronic-structure calculations that confirm the stability of the bcc phase at high pressure. Comment: 7 pages, 5 figures in main text; 7 pages, 2 figures in supplement |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.107.224104 |
| URL الوصول: | http://arxiv.org/abs/2303.12694 |
| رقم الأكسشن: | edsarx.2303.12694 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.107.224104 |
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