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Antimony compounds, Cadmium compounds, Chromium compounds, Gallium phosphide, Germanium oxides, Iron compounds, Lead compounds, Mott insulators, adalimumab, CD2 antigen, oxide, perovskite, Charge configuration, Cr 3+, Double perovskite oxide, Ferromagnetic Phase Transition, High Pressure and High Temperature conditions, Long range ferromagnetic order, Monoclinic structures, Ordered double perovskites, Space Groups, Synthesised, article, controlled study, high temperature, hyperbaric pressure, phase transition, Perovskite
Abstract:
A B-site ordered double perovskite oxide Cd2CrSbO6 was synthesized under high-pressure and high-temperature conditions. The compound crystallizes to a monoclinic structure with a space group of P21/n. The charge configuration is confirmed to be that of Cd2+/Cr3+/Sb5+. The magnetic Cr3+ ions form a tetrahedral structural frustrated lattice, while a long-range ferromagnetic phase transition is found to occur at TC = 16.5 K arising from the superexchange interaction via the Cr-O-Cd-O-Cr pathway. Electrical transport measurements indicate that Cd2CrSbO6 is an insulator that can be described by the Mott 3D variable range hopping mechanism. First-principles calculations reproduce well the ferromagnetic and insulating ground state of Cd2CrSbO6 with an energy band gap of 1.55 eV. The intrinsic ferromagnetic insulating nature qualifies Cd2CrSbO6 as a promising candidate for possible spintronics applications. © 2024 American Chemical Society.
