Fig. 6: R values in typical P2, O3, and P2/O3 hybrid structures.

a R-values of typical P2- and O3- type single-phase compounds. b R-values of P2 and O3 sub-structure among the numerous P2/O3 mixed-phase structures.

a R-values of typical P2- and O3- type single-phase compounds. b R-values of P2 and O3 sub-structure among the numerous P2/O3 mixed-phase structures.