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Ordered Magnetism in the Intrinsically Decorated jeff = 1/2 α-CoV3O8



P. M. Sarte, A. M. Arevalo-Lopez, M. Songvilay, D. Le, T. Guidi, V. Garcia-Sakai, S. Mukhopadhyay, S. C. Capelli, William D. Ratcliff, K. H. Hong, G. M. McNally, E. Pachoud, J. P. Attfield, C. Stock


The zero field structural and dynamic properties of the mixed valence ternary oxide α-CoV3O8 has been investigated using a combination of diffraction, DC susceptibility and inelastic neutron scattering measurements. The low temperature magnetic properties are consistent with a random macroscopic distribution of jeff = 1/2 Co2+ over the 16k metal sites with evidence for local ordering. Co2+ cations exhibit Ising anisotropy and are coupled via a 3D network composed of competing weaker ferro intra- and stronger antiferromagnetic interplanar superexchange, giving rise to long range antiferromagnetic order at TN 19 K. We identify similarities between α-CoV3O8 and dilute 3D Ising antiferromagnets. Such a comparison suggests that α-CoV2O8 may represent a non-doped analogy to random dilute 3D Ising antiferromagnets.
Physical Review B


magnetism, neutron, ising


Sarte, P. , Arevalo-Lopez, A. , Songvilay, M. , Le, D. , Guidi, T. , Garcia-Sakai, V. , Mukhopadhyay, S. , Capelli, S. , Ratcliff, W. , Hong, K. , McNally, G. , Pachoud, E. , Attfield, J. and Stock, C. (2018), Ordered Magnetism in the Intrinsically Decorated j<sub>eff</sub> = 1/2 &#945;-CoV<sub>3</sub>O<sub>8</sub>, Physical Review B, [online], (Accessed June 16, 2024)


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Created December 5, 2018, Updated October 12, 2021