4.5 Article

Simultaneous generation of ultrahigh pressure and temperature to 50 GPa and 3300 K in multi-anvil apparatus

期刊

REVIEW OF SCIENTIFIC INSTRUMENTS
卷 92, 期 10, 页码 -

出版社

AIP Publishing
DOI: 10.1063/5.0059279

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资金

  1. Geodynamics Research Center, Ehime University, under the PRIUS program [A48, 2016-A02, 2017-A01, 2017-A21, 2018-B30]
  2. Bayerisches Geoinstitut, University of Bayreuth, Germany
  3. European Research Council (ERC) under the European Union [787 527]
  4. Federal Ministry of Education and Research, Germany (BMBF) [05K16WC2, 05K13WC2]

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The study successfully generated ultrahigh pressure and temperature simultaneously using a multi-anvil apparatus with sintered diamond (SD) and boron-doped diamond (BDD) technology. The combination of SD anvils and a BDD heater with advanced multi-anvil technology is expected to lead to even higher pressure generation in the future.
We attempted to generate ultrahigh pressure and temperature simultaneously using a multi-anvil apparatus by combining the technologies of ultrahigh-pressure generation using sintered diamond (SD) anvils, which can reach 120 GPa, and ultrahigh-temperature generation using a boron-doped diamond (BDD) heater, which can reach 4000 K. Along with this strategy, we successfully generated a temperature of 3300 K and a pressure of above 50 GPa simultaneously. Although the high hardness of BDD significantly prevents high-pressure generation at low temperatures, its high-temperature softening allows for effective pressure generation at temperatures above 1200 K. High temperature also enhances high-pressure generation because of the thermal pressure. We expect to generate even higher pressure in the future by combining SD anvils and a BDD heater with advanced multi-anvil technology.

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