Articles | Volume 36, issue 3
https://doi.org/10.5194/ejm-36-473-2024
https://doi.org/10.5194/ejm-36-473-2024
Research article
 | 
14 Jun 2024
Research article |  | 14 Jun 2024

The use of MgO–ZnO ceramics to record pressure and temperature conditions in the piston–cylinder apparatus

Nicholas Farmer and Hugh St. C. O'Neill

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Short summary
The piston–cylinder apparatus is widely used to investigate rock properties at the conditions of the interior of the Earth, but uncertainty in its calibration of pressure persists, with substantial differences between laboratories. We use a ceramic of magnesium and zinc oxides to measure the conditions experienced by a sample. Routine use of such ceramics provides an archive of experimental conditions, enables interlaboratory comparisons, and resolves long-standing controversies in calibration.