Premium
Mössbauer study of FM sidebands produced by the RF magnetic field applied to an iron foil
Author(s) -
Kopcewicz M.,
Kotlicki A.,
Szefer M.
Publication year - 1975
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220720230
Subject(s) - sideband , materials science , magnetic field , foil method , radio frequency , spectral line , dissipation , magnetostriction , field (mathematics) , condensed matter physics , atomic physics , nuclear magnetic resonance , physics , composite material , telecommunications , mathematics , astronomy , computer science , pure mathematics , thermodynamics , quantum mechanics
The formation of rf sidebands in the Mössbauer spectra of metallic iron as a result of the application of an external rf magnetic field is studied. The dependence of the sideband intensities on the rf field intensity and the thickness of the sample is discussed. Experiments show that the formation of sidebands is connected with atomic vibrations induced within the foil by the rf field applied. Basing on the experimental spectra obtained, modulation indices are calculated in accordance with the FM theory. The results obtained are interpreted in terms of the modified magnetostriction model. The dependence of sideband formation on the coating of the foil with a damping medium is studied. It is found that covering of the sample surface with a silicon grease, adhesive tape, or metallic zinc causes a considerable damping of the sidebands and in some cases causes their complete quenching. This effect has been attributed to the dissipation of energy generated within the sample by the rf field. If the acoustic resistivity of the medium covering the sample is higher than that of air the energy transferred from the foil to the environment increases and the sidebands are damped.