Pressure, stress, and strain distribution in the double-stage diamond anvil cell

Sergey S. Lobanov, Vitali B. Prakapenka, Clemens Prescher, Zuzana Konôpková, Hanns Peter Liermann, Katherine L. Crispin, Chi Zhang, Alexander F. Goncharov

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


Double stage diamond anvil cells (DACs) of two designs have been assembled and tested. We used a standard symmetric DAC with flat or beveled culets as a primary stage and CVD microanvils machined by a focused ion beam as a second. We evaluated pressure, stress, and strain distributions in gold and a mixture of gold and iron as well as in secondary anvils using synchrotron x-ray diffraction with a micro-focused beam. A maximum pressure of 240 GPa was reached independent of the first stage anvil culet size. We found that the stress field generated by the second stage anvils is typical of conventional DAC experiments. The maximum pressures reached are limited by strains developing in the secondary anvil and by cupping of the first stage diamond anvil in the presented experimental designs. Also, our experiments show that pressures of several megabars may be reached without sacrificing the first stage diamond anvils.

Original languageEnglish (US)
Article number035905
JournalJournal of Applied Physics
Issue number3
StatePublished - Jul 21 2015

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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