fig2

Figure 2. The structural evolution of SnSb₂Te₄ at high pressures. (A) The typical ADXRD patterns of SnSb₂Te₄ acquired at various high pressures and room temperature. The solid circles, diamonds, and arrows are used to indicate the emerging diffractions of phases II, III, and IV. (B) The pressure-dependent evolution of the d-spacings of SnSb₂Te₄. The pressure ranges in which the structural phases exist are labeled with vertical dash lines. Across the phase transition pressures, the slopes of the variation curves of the d-spacings change discontinuously.