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Anomalous increase of T C in UGa2 under pressure

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Abstract

UGa2 is 5f ferromagnet with T C = 126 K. High-pressure study of a single crystal exhibits a dramatic increase of T C without any sign of saturation, reaching 155 K at p = 7 GPa, corresponding to +4 K/GPa. Such effect can be understood assuming a weak 5f delocalization and an exchange interaction driven by the hybridization with non-f states, which is strengthened under pressure.

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Authors and Affiliations

  1. Department of Condensed Matter Physics, Charles University, Ke Karlovu 5, 12116, Prague 2, The Czech Republic

    Alexandre Kolomiets, Ladislav Havela & Jiří Prchal

  2. Department of Physics, Lviv Polytechnic National University, 79013, Lviv, Ukraine

    Alexandre Kolomiets

  3. Institute of Physics, ASCR, Na Slovance 2, 18221, Prague 8, The Czech Republic

    Alexander V. Andreev

Authors
  1. Alexandre Kolomiets
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  2. Ladislav Havela
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  3. Jiří Prchal
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  4. Alexander V. Andreev
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Correspondence to Ladislav Havela.

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Kolomiets, A., Havela, L., Prchal, J. et al. Anomalous increase of T C in UGa2 under pressure. Journal of the Korean Physical Society 62, 1572–1574 (2013). https://doi.org/10.3938/jkps.62.1572

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  • DOI: https://doi.org/10.3938/jkps.62.1572

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