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Pyroelectric properties of β-BaB2O4 in the temperature range from 2.5 to 90 K

  • Magnetism and Ferroelectricity
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Abstract

Results are presented of experimental studies of how the spontaneous polarization of β-BaB2O4 (BBO) varies with temperature in the range from 2.5 to 90 K. Values of the pyroelectric coefficient γ s are calculated, and effective values of the Debye temperature (Θ=112 K) and the Einstein temperature (ΘE=28 K) are estimated. It is shown that the dominant contribution to γ s comes from acoustic lattice modes. A mechanism is proposed to explain why the temperature dependence of the pyroelectric effect in linear pyroelectric materials is different from that in ferroelectrics.

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Authors and Affiliations

  1. International Laboratory for High Magnetic Fields and Low Temperatures, 53-529, Wroclaw, Poland

    S. Matyjasik & Yu. V. Shaldin

Authors
  1. S. Matyjasik
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  2. Yu. V. Shaldin
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Fiz. Tverd. Tela (St. Petersburg) 39, 1631–1633 (September 1997)

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Matyjasik, S., Shaldin, Y.V. Pyroelectric properties of β-BaB2O4 in the temperature range from 2.5 to 90 K. Phys. Solid State 39, 1454–1456 (1997). https://doi.org/10.1134/1.1130097

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  • DOI: https://doi.org/10.1134/1.1130097

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