Synthesis and physical properties of spin-1 honeycomb lattice Pb6Ni9(TeO6)5

Abstract

We report the magnetic and dielectric properties of the spin-1 honeycomb lattice compound Pb6Ni9(TeO6)5. It crystallizes in hexagonal structure with a non-centrosymmetric space group P6322. DC magnetic susceptibility, AC magnetic susceptibility, and heat capacity studies reveal a magnetic long-range-order at TN≃24 K with a weak ferromagnetic component. The ground state is identified to be a canted antiferromagnetic type which is driven by the Dzyaloshinsky-Moriya interaction. A change in slope in the dielectric permittivity and a sudden drop in the loss tangent at TN implies the coupling of electric and magnetic order parameters.