AIP Advances (May 2016)

Mapping the magnetic hyperfine field in GdCo5

  • V. I. Krylov,
  • B. Bosch-Santos,
  • G. A. Cabrera-Pasca,
  • N. N. Delyagin,
  • A. W. Carbonari

DOI
https://doi.org/10.1063/1.4944654
Journal volume & issue
Vol. 6, no. 5
pp. 056024 – 056024-6

Abstract

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The magnetic hyperfine field (Bhf) in ferrimagnetic GdCo5 compound has been investigated as a function of temperature by Mössbauer effect (ME) spectroscopy and perturbed angular correlation (PAC) spectroscopy using 119Sn and 111Cd probe nuclei, respectively. Results show that the non-magnetic probe atoms 119Sn and 111Cd substitute all three non-equivalent positions in GdCo5: Gd, CoI, and CoII. For 119Sn and 111Cd probes at Gd sites, the saturation magnetic hyperfine fields are very different with values of Bhf1 = 57.0(1) T and Bhf1= 20.7(1) T, respectively. For 119Sn and 111Cd atoms localized at CoI and CoII sites the magnetic hyperfine fields are practically identical and, in saturation, reach the values of Bhf2 = 11.6(1) T and Bhf2 = 11.1(2) T, and Bhf3 = 14.8(1) T and Bhf3 = 14.4(2) T, respectively.