Substitution effects on the temperature versus magnetic field phase diagrams of 
the quasi-one-dimensional effective Ising spin-1/2 chain system BaCo2V2O8

Niesen, S. K.; Breunig, O.; Salm, S.; Seher, M.; Valldor, M.; Warzanowski, P.; Lorenz, T.

doi:10.1103/PhysRevB.90.104419

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Substitution effects on the temperature versus magnetic field phase diagrams of the quasi-one-dimensional effective Ising spin-1/2 chain system BaCo₂V₂O₈

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Valldor, M.
Martin Valldor, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Zitation

Niesen, S. K., Breunig, O., Salm, S., Seher, M., Valldor, M., Warzanowski, P., et al. (2014). Substitution effects on the temperature versus magnetic field phase diagrams of the quasi-one-dimensional effective Ising spin-1/2 chain system BaCo₂V₂O₈. Physical Review B, 90(10): 104419, pp. 104419-1-104419-9. doi:10.1103/PhysRevB.90.104419.

Zitierlink: https://hdl.handle.net/11858/00-001M-0000-0023-F3B4-4

Zusammenfassung

BaCo2V2O8 is a quasi-one-dimensional antiferromagnetic spin-1/2 chain system with pronounced Ising anisotropy of the magnetic exchange. Due to finite interchain interactions, long-range antiferromagnetic order develops below T-N similar or equal to 5.5 K, which is accompanied by a structural distortion in order to lift magnetic frustration effects. The corresponding temperature versus magnetic-field phase diagram is highly anisotropic with respect to the magnetic-field direction and various details are still under vivid discussion. Here, we report the influence of several substitutions on the magnetic properties and the phase diagrams of BaCo2V2O8. We investigate the substitution series Ba1-xSrxCo2V2O8 over the full range 0 <= x <= 1 as well as the influence of a partial substitution of the magnetic Co2+ by small amounts of other magnetic transition metals or by nonmagnetic magnesium. In all cases, the phase diagrams were obtained on single crystals from magnetization data and/or high-resolution studies of the thermal expansion and magnetostriction.