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High pressure and high magnetic field studies of the electronic transport properties of the antiferromagnet Eu3Ir4Sn13

  • Author(s): Mendonça-Ferreira, L
  • Bittar, EM
  • Bianchi, IKE
  • Rosa, PFS
  • Fisk, Z
  • Pagliuso, PG
  • et al.

In this work we report the effects of hydrostatic pressure and magnetic field on the electronic transport properties of the antiferromagnetic compound Eu Ir Sn (T ∼ 10 K). Single crystals of Eu Ir Sn were synthesized using the Sn self-flux technique. DC electrical resistivity measurements as a function of temperature were performed by means of the four- probe technique. The high-temperature anomaly at T∗ ∼ 57 K attributed to a structural distortion of the Sn1Sn2 cages in Eu Ir Sn is rapidly decreased to lower temperatures at a rate dT∗/dP 2 K/kbar, while the antiferromagnetic transition due to the Eu ions is only weakly affected. Our data do not indicate any magnetoelastic effect associated with the structural instability at T∗ . Furthermore, the suppression of the lattice distortion by application of external pressure is not accompanied by the emergence of superconductivity, possibly due to strong magnetic correlations between the Eu localized magnetic moments. 3 4 13 N 3 4 13 12 3 4 13 2+ 2+

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