Figure 1.

(a) The overall and exploded schematic diagram of a home-built uniaxial strain pressure cell, where the dimensions and descriptions of each part are marked. (b) Schematic of the NCMS sample, where its size and direction are marked. (c) Compressive stress-strain curves (red line) measured with a low strain rate of 1.3 × 10⁻⁴ s⁻¹ at 300 K and the arrows indicate the loading and unloading process.