Abstract
We report an alumina-encapsulated microcircuit on a diamond anvil for high-pressure and high-temperature electrical conductivity measurement. An alumina thin film was deposited on a diamond anvil as a thermal insulation layer for laser heating, on which a molybdenum film was deposited and photolithographically fabricated to a van der Pauw circuit. The introduction of the alumina layer significantly improves the laser heating performance. This specially fabricated diamond anvil permits us to measure the resistivity of (Mg0.875 Fe0.125) 2 Si O4 at 3450 K and 35 GPa in a laser-heated diamond anvil cell. We expect to substantially extend the pressure-temperature scale of in situ resistivity measurement.
Original language | English |
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Article number | 123902 |
Journal | Review of Scientific Instruments |
Volume | 77 |
Issue number | 12 |
DOIs | |
State | Published - 2006 |