2017/10/27 by K. C. Kharkwal, Kharkwal, K C, A. K. Pramanik +1
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Multiferroics and related materials #Strongly Correlated Electrons (cond-mat.str-el)
paper · pdf · doi:10.48550/arxiv.1710.10128
openalex publication_date 2017/10/27 · openalex created_date 2017/11/10 · openalex updated_date 2026/07/28
The 3d-5d based double perovskites are of current interest as they provide model system to study the interplay between electronic correlation (U) and spin-orbit coupling (SOC). Here we report detailed structural, magnetic and transport properties of doped double perovskite material (Sr1-xYx)2FeIrO6 with x ≤ 0.2. With substitution of Y, system retains its original crystal structure but structural parameters modify with x in nonmonotonic fashion. The magnetization data for Sr2FeIrO6 show antiferromagnetic type magnetic transition around 45 K, however, a close inspection in data indicates a weak magnetic phase transition around 120 K. No change of structural symmetry has been observed down to low temperature, although the lattice parameters show sudden changes around the magnetic transitions. Sr2FeIrO6 shows an insulating behavior over the whole temperature range which yet does not change with Y substitution. Nature of charge conduction is found to follow thermally activated Mott's variable range hopping and power law behavior for parent and doped samples, respectively. Interestingly, evolution of structural, magnetic and transport behavior in (Sr1-xYx)2FeIrO6 is observed to reverse with x > 0.1 which is believed to arise due to change in transition metal ionic state.