Temperature compensated high-temperature/high-pressure Merrill–Bassett diamond anvil cell

Abstract

A Merrill–Bassett diamond anvil cell for high‐temperature/high‐pressure studies up to 5 GPa at 1000 K and 13 GPa at 725 K is described. To maintain uniform, well‐characterized temperatures, and to protect the diamond anvils from oxidation and graphitization, the entire cell is heated in a vacuum oven. The materials are chosen so that the pressure remains constant to within ±10% over the entire temperature range.