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Schematic of a sample cell for high-pressure of oxyhydrides. The pyrophyllite cube is approximately 1.5 cm × 1.5 cm × 1.5 cm. Tungsten carbide blocks (anvils) apply pressure to the pyrophyllite cube from all six faces. Heating is achieved by electric current, via electrical contacts running through the tungsten carbide anvil, steel ring, and Mo disk to the graphite heater.
