Structure and magnetic properties of cation-disordered perovskitesSrLaCrSnO6 and Ca2CeCr2TiO9Emily C. Huntera, Peter D. Battlea,?, Emmanuelle Suardb, Pascal Manuelca Inorganic Chemistry Laboratory, University of Oxford, South Parks Road, Oxford OX1 3QR, UKb Institut Laue-Langevin, BP156, 71 avenue des Martyrs, 38000 Grenoble, Francec ISIS Facility, Rutherford Appleton Laboratory-STFC, Chilton, Didcot, Oxfordshire OX11 0QX, UKA R T I C L E I N F OKeywords:Cation disorderAntiferromagnetNeutron diffractionPerovskiteA B S T R A C TPolycrystalline samples of the new perovskites SrLaCrSnO6 and Ca2CeCr2TiO9 have been synthesised using theceramic method and characterized by x-ray diffraction, neutron diffraction and magnetometry. Both crystallisein the space group Pbnm, with a disordered distribut
What are perovskites???
Ø Compounds with general formula (ABO3) wherein A - large metal cation packed in layers amidst oxygen ions and B - smaller metal ion
Ø Most extensively studied.
Ø Various cationic substitution in A site and B site impart different properties such as Antiferromagnetism (most common), Ferrimagnetism (occurs when partial cation over B sites)
Ferromagnetism which is rare when compared to the other two.
Antiferromagnetism - Most common
Ferrimagnetism-occurs due to partial cation ordering over the B sites
Ferromagnetism - relatively rare among insulating metal oxides