The magnetic susceptibility, crystal and magnetic structures, and electronic structure of double perovskite Sr2ScOsO6 are reported. Using both neutron and x-ray powder diffraction we find that the crystal structure is monoclinic P21/n from 3.5 to 300 K. Magnetization measurements indicate an antiferromagnetic transition at TN=92K, one of the highest transition temperatures of any double perovskite hosting only one magnetic ion. Type I antiferromagnetic order is determined by neutron powder diffraction, with an Os moment of only 1.6(1) muB, close to half the spin-only value for a crystal field split 5d electron state with t2g^3 ground state. Density functional calculations show that this reduction is largely the result of strong Os-O hybridization, with spin-orbit coupling responsible for only a ~0.1 muB reduction in the moment.
@article{arxiv.1503.01485,
title = {Magnetic order and electronic structure of 5d3 double perovskite Sr2ScOsO6},
author = {A. E. Taylor and R. Morrow and D. J. Singh and S. Calder and M. D. Lumsden and P. M. Woodward and A. D. Christianson},
journal= {arXiv preprint arXiv:1503.01485},
year = {2015}
}