R3: High-pressure science and deep Earth’s material

[R3P-07] Measurements of local stress and high pressure phase transition of Fe in in-situ TEM indentation experiments

*Akira MIYAKE¹, Yohei Igami¹, Ryuichi nomura¹ (1. Kyoto Univ.)

Keywords:TEM, high pressure phase transition, in situ experiment

Two types of in-situ experiments in transmission electron microscope were performed. The result of indentation experiment using diamond rod and plate shows the maximum pressure value is over 400 GPa at 1000 uN load. Another in situ high pressure experiment shows the phase transition from alpha phase of Fe (iron) to epsilon phase at 200 uN load. At this load experiment, the pressure was estimated to be about 14 GPa.