Displacive Jahn--Teller transition in NaNiO${}_2$

Liam Agostino Vincenzo Nagle-Cocco, Annalena R. Genreith-Schriever, James M. A. Steele +10

Below its Jahn--Teller transition temperature, $T_{\mathrm{JT}}$, NaNiO${}_2$ has a monoclinic layered structure consisting of alternating layers of edge-sharing NaO${}_6$ and Jahn-Telle…