Influence of Quadrupole Interaction on 57Fe Mössbauer Spectra for Samples with Charge- and Spin-Density Waves |
J. Cieślak and S.M. Dubiel Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy (AGH), Al. Mickiewicza 30, 30-059 Kraków, Poland |
Received: January 13, 1997; in final form: March 7, 1997 |
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The influence of the quadrupole interaction on the shape of 57Fe Mössbauer spectra expected for samples with charge-density waves andor spindensity waves is investigated. It is shown, by model calculations, that both for the commensurate and for incommensurate charge-density waves andor spin-density waves the shape of 57Fe Mössbauer spectra is sensitive to the value, and for asymmetric spectra, to the sign of quadrupole interaction. This necessitates an inclusion of quadrupole interaction when analyzing the spectra recorded on samples exhibiting charge-density waves andor spin-density waves, and having a symmetry lower than cubic. |
DOI: 10.12693/APhysPolA.91.1131 PACS numbers: 75.30.Fv, 75.50.Ee, 76.80.+y |