  The ordered double perovskites Sr2CrOsO6 and Ca2CrOsO6 have been synthesized
and characterized with neutron powder diffraction, electrical transport
measurements, and high field magnetization experiments. Sr2CrOsO6 and Ca2CrOsO6
crystallize with R-3 and P21/n space group symmetry, respectively. Both
materials are found to be ferrimagnetic insulators with saturation
magnetizations near 0.2 {\mu}B. Sr2CrOsO6 orders at 660 K, showing
non-monotonic magnetization temperature dependence, while Ca2CrOsO6 orders at
490 K and does not show non-monotonic behavior. Evidence for a theoretically
predicted canted magnetic structure in Sr2CrOsO6 is sought and not found.
