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Decoupling experiments for the study of electric and magnetic hyperfine interactions in ferromagnetic compounds

  • Perturbed Angular Correlations/Distributions
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Abstract

The decoupling experiments involving the time-differential perturbed angular correlation (TDPAC) of the 133–482 keV γ-γ cascade in the presence of an external magnetic field applied along the quantization axis have been performed to measure the electric quadrupole and the magnetic hyperfine interactions experienced by the181Ta nuclei at Hf sites in the pseudobinary compounds HfFe2-xSix, withx=0.1 andx=0.3. The hyperfine magnetic fields measured at 298 K areH hf=133.1±12.0 kG in the cubic (C15) Laves phase compound HfFe1.9Si0.1 andH hf=76.8±7.0 kG in the hexagonal (C14) Laves phase compound HfFe1.7Si0.3. The decoupling technique has also been used to obtain a —ve sign for the hyperfine field experienced by181Ta nuclei at the Ti or Hf sites in the Heusler compound Co2Ti0.8Hf0.2Sn and a+ve sign for the hyperfine field at Zr sites in the cubic (C15) Laves phase compound ZrFe2.

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  1. Tata Institute of Fundamental Research, 400 005, Bombay, India

    H. C. Jain

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Jain, H.C. Decoupling experiments for the study of electric and magnetic hyperfine interactions in ferromagnetic compounds. Hyperfine Interact 26, 941–962 (1985). https://doi.org/10.1007/BF02354645

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