New diamond anvil cell system for in situ resistance measurement under extreme conditions

Ming Li, Chunxiao Gao, Yanzhang Ma, Yanchun Li, Xiaodong Li, Hui Li, Jing Liu, Aimin Hao, Chunyuan He, Xiaowei Huang, Dongmei Zhang, Cuiling Yu

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

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 languageEnglish
Article number123902
JournalReview of Scientific Instruments
Volume77
Issue number12
DOIs
StatePublished - 2006

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