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Low-temperature heat capacity of dysprosium diboride

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Abstract

Heat capacity C p(T) of dysprosium diboride is experimentally investigated at the temperatures of 5–300 K. On the dependence C p(T) smooth anomaly at the temperatures of 15–20 K and sharp anomalies at T m1=47.8 K and T m2=178.8 K are revealed. Anomaly at T m1 is caused, obviously, by ferromagnetic phase transition in DyB2. The lattice contribution to DyB2 heat capacity is determined by comparison with heat capacity of non-magnetic YB2. The estimation of Schottky contribution to DyB2 heat capacity is made, the scheme of splitting of the ground state of Dy3+ ion is offered.

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Authors and Affiliations

  1. Bryansk State University, Bryansk, Russia, 241036, Bedjitskaya str., 14

    V. V. Novikov & A. V. Matovnikov

Authors
  1. V. V. Novikov
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  2. A. V. Matovnikov
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Correspondence to V. V. Novikov.

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Novikov, V.V., Matovnikov, A.V. Low-temperature heat capacity of dysprosium diboride. J Therm Anal Calorim 88, 597–599 (2007). https://doi.org/10.1007/s10973-006-8054-8

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  • DOI: https://doi.org/10.1007/s10973-006-8054-8

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