Magnetic hyperfine structure and relaxation effects in bromobis (morpholyldithiocarbamato) iron (III)

1 January 1975

proceedings article
Published by AIP Publishing in AIP Conference Proceedings

Vol. 24 (1) , 215-216
https://doi.org/10.1063/1.30051

Abstract

Mössbauer resonance hfs show magnetic order and relaxation effects in the 4A ground state of bromobis (morphylyldithiocarbamate) iron (III), (S2CNC4H8O)2FeI. Interpretation of the data required an extension of earlier relaxation calculations to include general orientations of the following inputs: axial and rhombic crystal field terms, intermolecular spin‐dipolar interactions, electric field gradient, and an intermolecular Weiss field. Polarizations of electronic levels were converted to internal effective magnetic fields (only core polarization mhfs is present). Relaxation processes were calculated quantum mechanically using the Liouville operator formalism of Blume or Gabriel. Below T C , agreement between theory and the major spectral region is satisfactory. However, evidence of a spread in transition temperatures and possible spin canting is also present.

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