fig3

From: First-principles study on the negative/zero area compressibility in Ag₃BO₃ with “wine-rack” architecture

First-principles study on the negative/zero area compressibility in Ag<sub>3</sub>BO<sub>3</sub> with “wine-rack” architecture

Figure 3. The calculated enthalpy and variation of cell parameters in Ag₃Co(CN)₆ and Ag₃BO₃vs. pressure. (A) Pressure-dependent enthalpy for the low and high-pressure phases of Ag₃Co(CN)₆. (B) Pressure-dependent cell parameters of Ag₃Co(CN)₆. (C) Pressure-dependent enthalpy in Ag₃BO₃-I and Ag₃BO₃-II. (D) The relative change of pressure-dependent cell parameters in Ag₃BO₃-I and Ag₃BO₃-II. By considering the different numbers (Z value) of chemical formulas in the two phases of AgBO₃ and Ag₃Co(CN)₆, the enthalpies of AgBO₃-I and Ag₃Co(CN)₆-I are multiplied by the factor of 4 and 2, respectively.