2019/11/25 by R. Rajesh, R, Rajesh kumar, C. Dhanasekhar +6
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #FOS: Physical sciences #Magnetic Properties and Synthesis of Ferrites #Materials Science (cond-mat.mtrl-sci) #Multiferroics and related materials
paper · pdf · doi:10.48550/arxiv.1911.10730
openalex publication_date 2019/11/25 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report the enhancement of Néel temperature of Cr2O3 by replacing 50% of Cr by Fe prepared by sol-gel method. The structural analysis by neutron diffraction has revealed that FeCrO3 belongs to a corundum structure (R-3c space group) with an antiferromagnetic spin structure having collinear spins along a-axis with propagation vector k=0; the high-temperature magnetisation study indicated a Néel temperature of 560 K. The enhancement in Néel temperature has been attributed to the strong orbital hybridization that leads to change in nearest neighbor bond angle and bond distances. Impedance spectroscopy has revealed conduction mechanism at low temperature is due to the polaron hopping while extrinsic contributions from the Maxwell-Wagner dominant at high temperatures