Unveiling the electronic origin of anion order in CrO(2-x)F(x)

Chem Commun (Camb). 2014 Jan 25;50(7):799-801. doi: 10.1039/c3cc46336b.

Abstract

Electron-diffraction and high-resolution lattice images reveal superstructure stripes with wave vectors of (1/3, 0, 1/3) and (-1/3, 0, 1/3), which are associated with the ordered arrangement of F(-). Charge density distribution suggests that these stripes manifest themselves electronically as F(-)-Cr(3+)-F(-) zigzag chains, driven by the anisotropic charge interaction of F(-) anions.