Flux growth and characterization of Sr sub(2)NiWO sub(6) single crystals

Single crystals of the double perovskite Sr sub(2)NiWO sub(6) were synthesized via SrCl sub(2) flux growth using high quality, phase-pure polycrystalline Sr sub(2)NiWO sub(6) as precursor material. This high quality precursor enabled us to grow large and phase pure crystals with sizes up to 1 mm x 1 mm in the basal plane and octahedral morphology. We measured the temperature dependence of the magnetization along the c-axis and along the ab plane. The analysis of the data allows a precise determination of the effective magnetic moment and the Curie-Weiss temperature. Sr sub(2)NiWO sub(6) orders antiferromagnetically at TN=54 K as revealed by magnetization and specific heat data.