First-principles study on the negative/zero area compressibility in Ag3BO3 with “wine-rack” architecture
Xingyu Zhang , Youquan Liu , Naizheng Wang , Xingxing Jiang , Zheshuai Lin
Microstructures ›› 2024, Vol. 4 ›› Issue (1) : 2024002
First-principles study on the negative/zero area compressibility in Ag3BO3 with “wine-rack” architecture
Materials with negative/zero area compressibility (NAC or ZAC), which expand or keep constant along two directions under hydrostatic pressure, are very rare but of great scientific and engineering merits. Here, we investigate “wine-rack” architecture, which is the most prevailing for the pressure-expansion effect in materials, and identify that two allotropes (Ag3BO3-I and -II) of Ag3BO3 have the ZAC and NAC effects, respectively, by the first-principles calculations. Structural analysis discloses that the competition between the contraction effect from the bond length/angle shrinkage and the expansion effect from the angle closing between O-Ag-O bars and the
Negative area compressibility / zero area compressibility / wine-rack / borate
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