Phase coexistence in image solid solutions

A phase diagram for image for image is presented. At room temperature image with image and 0.20 crystallizes in the trigonal space group image and shows the same charge ordering of image and image ions as has been found for undoped image. The image and 0.20 compounds both show an apical-type Jahn–Teller distortion of the MnO6 octahedra around image ions. Both compounds undergo a structural phase transition to a high-temperature cubic structure (space group image) with coexistence of both phases between 375 and 415 K for image and between 10 and 380 K for image. The domain sizes of the coexisting phases are at least 200 nm for both image and 0.20 compounds.