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Hyperfine Interactions

, Volume 176, Issue 1–3, pp 75–79 | Cite as

Magnetic hyperfine fields at Gd and in sites in GdPdIn compound

  • A. L. Lapolli
  • A. W. Carbonari
  • J. Mestnik-Filho
  • D. M. T. Leite
  • R. N. Saxena
Article
  • 36 Downloads

Abstract

Perturbed gamma-gamma angular correlation (PAC) technique was used to measure the hyperfine interactions in the intermetallic compound GdPdIn using 111In→ 111Cd and 140La→ 140Ce probe nuclei at the In and Gd sites, respectively. The PAC results for 111Cd show two well-defined electric quadrupole frequencies above T C assigned to probes occupying Gd and In sites, with ~50% of site occupation each. The fraction corresponding to In sites increases with temperature reaching 95% around 500 K. Below T C the measurements for 111Cd probe showed combined electric quadrupole plus magnetic dipole interaction with sharp increase in the magnetic field below around 80 K. A pure magnetic interaction with lower hyperfine field values was observed at the Gd sites occupied by 140Ce below 100 K.

Keywords

Rare-earth magnetism Gd-based compounds Magnetic hyperfine field Perturbed angular correlation 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • A. L. Lapolli
    • 1
  • A. W. Carbonari
    • 1
  • J. Mestnik-Filho
    • 1
  • D. M. T. Leite
    • 1
  • R. N. Saxena
    • 1
  1. 1.Instituto de Pesquisas Energéticas e NuclearesIPEN-CNEN/SPSão PauloBrazil

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