Boron-doped diamond heater and its application to large-volume, high-pressure, and high-temperature experiments

Anton Shatskiy, Daisuke Yamazaki, Guillaume Morard, Titus Cooray, Takuya Matsuzaki, Yuji Higo, Ken Ichi Funakoshi, Hitoshi Sumiya, Eiji Ito, Tomoo Katsura

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38 Citations (Scopus)


A temperature of 3500 °C was generated using a diamond resistance heater in a large-volume Kawai-type high-pressure apparatus. Re and LaCrO3 have conventionally been used for heaters in high-pressure studies but they cannot generate temperatures higher than 2900 °C and make in situ x-ray observations difficult due to their high x-ray absorption. Using a boron-doped diamond heater overcomes these problems and achieves stable temperature generation for pressure over 10 GPa. The heater starting material is a cold-compressed mixture of graphite with boron used to avoid the manufacturing difficulties due to the extreme hardness of diamond. The diamond heater was synthesized in situ from the boron-graphite mixture at temperature of 1600±100 °C and pressure of 20 GPa. By using the proposed technique, we have employed the diamond heater for high-temperature generation in a large-volume high-pressure apparatus. Achievement of temperatures above 3000 °C allows us to measure the melting points of the important constituents in earth's mantle (MgSiO3, SiO2, and Al2 O3) and core (Fe and Ni) at extremely high pressures.

Original languageEnglish
Article number023907
JournalReview of Scientific Instruments
Issue number2
Publication statusPublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Instrumentation


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