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Hyperfine Interactions

, Volume 158, Issue 1–4, pp 223–227 | Cite as

Implantation of 111In-probe Nuclei with Nuclear Reactions 108Pd(6, 7Li, xn)111In using Pelletron Tandem Accelerator: Study of Local Magnetism in Heusler Alloys

  • G. A. Cabrera-Pasca
  • M. N. Rao
  • J. R. B. Oliveira
  • M. A. Rizzutto
  • N. Added
  • W. A. Seale
  • R. V. Ribas
  • N. H. Medina
  • R. N. Saxena
  • A. W. Carbonari
Original Paper

Abstract

Perturbed Angular Correlation method has been used to study the hyperfine magnetic field in the Heusler alloy Pd2MnSb(Sn). Ion implantation of the recoil 111In nuclei following heavy ion nuclear reactions 108Pd(7Li, 4n)111In and 108Pd(6Li, 3n)111In has been used to great advantage in the present case resulting in large implantation efficiency. Only a few hours of irradiation time with moderate beam current of the order of 400–500 nA resulted in sufficient implanted 111In activity on the sample for good quality measurements. The hyperfine field was measured at 111Cd probe nuclei substituting Mn and Sb(Sn) sites as a function of temperature. The fraction of 111Cd nuclei occupying Mn atom sites was found to increases with the annealing of sample at higher temperatures.

Key Words

magnetic hyperfine field Heusler alloys probe implantation PAC 

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Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • G. A. Cabrera-Pasca
    • 1
  • M. N. Rao
    • 1
  • J. R. B. Oliveira
    • 1
  • M. A. Rizzutto
    • 1
  • N. Added
    • 1
  • W. A. Seale
    • 1
  • R. V. Ribas
    • 1
  • N. H. Medina
    • 1
  • R. N. Saxena
    • 2
  • A. W. Carbonari
    • 2
  1. 1.Instituto de Fisica da Universidade de São Paulo, USPSão PauloBrazil
  2. 2.Instituto de Pesquisas energéticas e Nucleares-IPEN-CNEN/SPSão PauloBrazil

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