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arXiv · 1110.2068

Microscopic Magnetic Nature of the Quasi-one-Dimensional Antiferromagnet BaCo2V2O8

M. Mansson·K. Prsa·J. Sugiyama·H. Nozaki·A. Amato·K. Omura·S. Kimura·M. Hagiwara
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Abstract

The title compound belongs to a wide group of quasi-one-dimensional (Q1D) antiferromagnets (AF) and its Co2+ ions form Q1D screw-chains along the c-axis. We here present the first investigation of the microscopic magnetic nature of a single crystalline BaCo2V2O8 sample using μ+SR. Our data reveal the presence of several clear muon frequencies below TN indicating the onset of a long-range order. Above 5 K, the μ+SR spectra is well fitted to a simple power-exponential relaxing function. The temperature dependence of the relaxation-rate (λ) as well as the power (n) display a clear anomaly around T = 44 K, indicating the onset of short-range 1D correlations.

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M. Mansson, K. Prsa, J. Sugiyama, H. Nozaki, A. Amato, K. Omura, S. Kimura, M. Hagiwara. 2011-10-10. Microscopic Magnetic Nature of the Quasi-one-Dimensional Antiferromagnet BaCo2V2O8. https://doi.org/10.1016/j.phpro.2012.04.060

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