Research Article

Consistent Atomic Geometries and Electronic Structure of Five Phases of Potassium Niobate from Density-Functional Theory

Table 7

Complete list of calculated PBEsol lattice parameters for the five different phases of , which are used in the HSE electronic-structure calculations.

Phase P4mm Amm2 R3m

(Å) 3.985 4.058 3.961 3.961 4.001
(Å) 3.985 3.969 4.021 4.023 4.001
(Å) 3.985 3.969 4.021 4.020 4.001
(°) 90 90 89.82 89.82 89.90
(°) 90 90 90 90 89.90
(°) 90 90 90 90 89.90