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High Pressure Research, 36, 564-574, (2016) [doi: 10.1080/08957959.2016.1245297]

Amorphous boron composite gaskets for in situ high pressure and high temperature studies

A. D. Rosa, M. Merkulova, G. Garbarino, V. Svitlyk, J. Jacobs, C. Sahle, O. Mathon, M. Munoz, S. Merkel

The diamond anvil cell (DAC) is a fundamental device used to explore the properties of materials under extreme pressure and temperature (P/T) conditions. In the past years, simultaneous high P/T DAC experiments using the resistively heated DAC (RH-DAC) techniques have been developed for studying materials properties in a wide P/T range. However, the mechanical instability of metallic gaskets used for sample confinement at high P/T conditions remains a limiting factor for exploiting the accessible P/T range of the RH-DAC. In this study, we present a new gasket configuration that overcomes these limitations. It is based on an amorphous boron–epoxy mixture inserted in a rhenium gasket. We show how these gasket inserts stabilize the sample chamber over a wide P/T range, allowing monitoring sample properties using X-ray diffraction and absorption spectroscopy up to 50 GPa and 1620 K.

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© Sébastien Merkel, Université de Lille, France

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