Abstract
The structural, magnetic, and nonstoichiometric properties of the perovskite-like Pr1−xSrxCoO3−δ phase (0≤x≤0.80) have been studied by powder X-ray and neutron diffraction and magnetic susceptibility measurements between 5 and 295 K as well as by redox titration. In the compostion range 0≤x≤0.30 the structure can be described with a GdFeO3-type atomic arrangement (space group Pnma), while the structure in the composition range 0.30<x≤0.80 involves a lower symmetry (space group P21/n). Samples with 0.10≤x≤0.80 exhibit ferromagnetism below a Curie temperature of ≤250 K, depending on the composition. The Pr1−xSrxCoO3−δ phase behaves as a relatively hard magnetic material. For samples prepared and cooled to room temperature in air, the oxidation state of cobalt increases linearly up to x≈0.50 and stabilizes at +3.4 for higher substitution levels of Sr. On the basis of the present data, it is not possible to prove or disprove that there occurs charge ordering in Pr1−xSrxCoO3−δ.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
