Инд. авторы:	Lobanov S.S., Prakapenka V.B., Prescher C., Konopkova Z., Liermann H.P., Crispin K.L., Zhang C., Goncharov A.F.
Заглавие:	Pressure, stress, and strain distribution in the double-stage diamond anvil cell
Библ. ссылка:	Lobanov S.S., Prakapenka V.B., Prescher C., Konopkova Z., Liermann H.P., Crispin K.L., Zhang C., Goncharov A.F. Pressure, stress, and strain distribution in the double-stage diamond anvil cell // Journal of Applied Physics. - 2015. - Vol.118. - Iss. 3. - Art.035905. - ISSN 0021-8979. - EISSN 1089-7550.
Внешние системы:	DOI: 10.1063/1.4927213; SCOPUS: 2-s2.0-84937485251; WoS: 000358429200068;
Реферат:	eng: 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. (C) 2015 AIP Publishing LLC.
Ключевые слова:	LATTICE STRAINS; SINGLE-CRYSTAL; GPA; GENERATION; STRENGTH; MULTIMEGABAR PRESSURES; POLYCRYSTALLINE DIAMOND; ULTRAHIGH PRESSURE; X-RAY-DIFFRACTION; ELASTIC-CONSTANTS;
Издано:	2015
Физ. характеристика:	035905