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Abstract
Abstract Iridium (Ir) based double perovskites La 2 B IrO 6 , combining 3d and 5d transition metal ions feature a variety of exotic magnetic and magneto-electric properties. Here, we report for the first time, the exchange bias effect in an iridium (Ir) based double perovskite system due to the Dzyaloshinsky – Moria interaction. La 2 NiIrO 6 , a mixed 3d – 5d and compensated antiferromagnetic (AFM, AFM transition temperature, T N ∼ 70 K) double perovskite compound exhibits the exchange bias effect below 50 K, when it is cooled in the presence of a magnetic field. Detailed magnetization measurements indicate that the exchange bias properties in this compound are associated with the antisymmetric Dzyaloshinsky – Moria interactions, which originate due to the very low crystallographic symmetry in these system types.
Published Version
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