Flux growth and characterization of Sr2NiWO6 single crystals.

Single crystals of the double perovskite Sr 2 NiWO 6 were synthesized via SrCl 2 flux growth using high quality, phase-pure polycrystalline Sr 2 NiWO 6 as precursor material. This high quality precursor enabled us to grow large and phase pure crystals with sizes up to 1 mm ×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 2 NiWO 6 orders antiferromagnetically at T N =54 K as revealed by magnetization and specific heat data. [ABSTRACT FROM AUTHOR]