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Investigation of the structural, dielectric, magnetic properties and NTC-thermistor response of CaBiFeMnO6 double perovskites

“…The interaction of virtual electrons between two half-filled and one half-filled with completely filled or with empty orbitals satisfies the Goodenough-Kanamori rule concerning 1801 super-exchange coupling and maintains the magnetic properties of the solid solution. 70 The superexchange interactions between two half-filled overlapped orbitals, which in turn participate in the spin exchange, regulate the antiferromagnetic behaviour of the materials. 12,13 Two important features were introduced in the Mn-doped BiFeO 3 material by the efficient maintenance of charge neutrality caused by the substitution of Mn 4+ cations at the Fe 3+ cationic site.…”