Dipolar magnetic field and fermi contact field at the μ+ site in α-Fe at very low temperatures

L. Schimmele, A. Seeger, T. Stammler, W. Templ, C. Baines, T. Grund, M. Hampele, D. Herlach, M. Iwanowski, K. Maier, J. Major, T. Pfiz

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In a longitudinal μ+SR experiment on a high-purity α-Fe single crystal sphere magnetically saturated in a 〈 111 〉 direction damped oscillations (wiggles) were observed in a temperature range 30 mK to 600 mK and in a certain regime of applied magnetic fields Bappl. Meassurements of the wiggle frequency as a function of Bappl give us directly the Fermi field BFermi=(-1.13±0.02)T and the dipolar magnetic field |Bdip|=(0.66±0.03)T. Bdip was used to determine the prefactor in the Arrhenius law obeyed by the μ+ hopping rate between 100 K and 1000 K. A comparision with the corresponding values for protons and deuterons suggests diffusion via the adiabatic mechanism.

Original languageEnglish
Pages (from-to)337-343
Number of pages7
JournalHyperfine Interactions
Issue number1
Publication statusPublished - Dec 1 1994


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry

Cite this

Schimmele, L., Seeger, A., Stammler, T., Templ, W., Baines, C., Grund, T., Hampele, M., Herlach, D., Iwanowski, M., Maier, K., Major, J., & Pfiz, T. (1994). Dipolar magnetic field and fermi contact field at the μ+ site in α-Fe at very low temperatures. Hyperfine Interactions, 85(1), 337-343. https://doi.org/10.1007/BF02069444