Loading…

Synthesis, Crystal Structure, and Properties of the Ordered Double Perovskite Sr2CoOsO6

Sr2CoOsO6, a new osmium based ordered semiconductor double perovskite was prepared by solid state synthesis from the respective binary oxides. Room temperature PXRD analysis shows the compound to be tetragonal [I4/m; a = 5.5503(1) Å and c = 7.9320(1) Å], whereas low temperature synchrotron data refi...

Full description

Saved in:
Bibliographic Details
Published in:Zeitschrift für anorganische und allgemeine Chemie (1950) 2013-11, Vol.639 (14), p.2421-2425
Main Authors: Kumar Paul, Avijit, Reehuis, Manfred, Felser, Claudia, Abdala, Paula M., Jansen, Martin
Format: Article
Language:English
Subjects:
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Sr2CoOsO6, a new osmium based ordered semiconductor double perovskite was prepared by solid state synthesis from the respective binary oxides. Room temperature PXRD analysis shows the compound to be tetragonal [I4/m; a = 5.5503(1) Å and c = 7.9320(1) Å], whereas low temperature synchrotron data refinement has revealed a second monoclinic polymorph [I2/m; a = 5.4969(2) Å, b = 5.4979(2) Å, c = 8.0090(1) Å and γ = 90.527(1)°] with a fully ordered rocksalt arrangement of cobalt and osmium atoms over the perovskite B‐sites. Heat capacity and magnetic measurements indicate that Sr2CoOsO6 shows antiferromagnetic ordering below TN = 108 K followed by a second magnetic transition at T2 = 65 K. It was shown that the change from the tetragonal to the monoclinic phase occurs at TN.
ISSN:0044-2313
1521-3749
DOI:10.1002/zaac.201300429