New Apatite‐Type Oxide Ion Conductor, Bi<sub>2</sub>La<sub>8</sub>[(GeO<sub>4</sub>)<sub>6</sub>]O<sub>3</sub>: Structure, Properties, and Direct Imaging of Low‐Level Interstitial Oxygen Atoms Using Aberration‐Corrected Scanning Transmission Electron Microscopy
Advanced functional materials