Santanu De , Supratik Mukherjee , Rahul Singh , S. Karmakar , Shipra Das , U.K. Goutam , R. Rawat , G. Vaitheeswaran , P.N. Santhosh
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引用次数: 0
Abstract
Novel materials are of great interest due to the realization of many exotic states of matter. One of these systems, Ba3CoSn2O9, belonging to perovskite variants has been synthesized followed by the magnetic ground state study. Unlike 6H-perovskites, this system is crystallized in face-centred cubic (FCC) structure under the space group, Fm3̄m. The magnetic cobalts are in the spin half state at octahedral sites in this A ... stacked square lattice comprising triangular sub-lattices (TL). Moreover, the magnetic sites are partially occupied by non-magnetic tin that removes the frustrating nature of 1/2 predominantly antiferromagnetic moments in this TL system. Remaining moments in the same TL lattice get ordered antiferromagnetically at T = 40 K resulting in a partially disordered antiferromagnetic state in this FCC crystal-lattice.
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