A2B′BO6 perovskites: A review

The B-site substituted perovskite oxides A(2)B'B '' O-6 have in the recent decades gained an increasing amount of interest due to their various interesting properties and possible applications. Here we survey the literature for ca. one thousand A(2)B'B '' O-6 perovskite compounds. Crystal structures and the various crystal chemistry features such as ordering and valence mixing of the B cations characteristic to these compounds are reviewed, together with their electronic and magnetic properties. Most importantly, the thorough examination of the research so far carried out allows us to make predictions for a number of new A(2)B'B '' O-6 compounds yet to be synthesized and reveal exciting but not yet fully explored puzzles related to this family of functional oxide materials. (C) 2014 Elsevier Ltd. All rights reserved.