Meeting abstract
Mössbauer effect study of N₂H₅⁺Fe(N₂H₃COO)₃⁻·H₂O in the solid and frozen solution state
Danica Hanžel
; J. Stefan Institute, E. Kardelj University of Ljubljana, Ljubljana, Yugoslavia
Darko Hanžel
; J. Stefan Institute, E. Kardelj University of Ljubljana, Ljubljana, Yugoslavia
France Sevšek
; J. Stefan Institute, E. Kardelj University of Ljubljana, Ljubljana, Yugoslavia
Abstract
Mössbauer spectra of piezoelectric N₂H₅⁺Fe(hyc)₃H₂O in an external magnetic field (H_{\text{ex}} = 45 kG) at 4.2 K showed that the sign of the principal component of the electric field gradient, V_{zz}, is negative, and that the iron magnetic moments are oriented perpendicular to V_{zz}.
The Mössbauer spectra of frozen aqueous solutions of N₂H₅⁺Fe(hyc)₃·H₂O at a concentration of 0.08 M/l were measured at various temperatures. After quick cooling from RT to 77 K, the samples were warmed up to 235 K. The effects of cooling rate on the Mössbauer spectra were estimated to be negligible. The centre shift parameters in solution are similar to those of the corresponding solid compound. The microstructure of the Fe²⁺ ion in 0.08 M frozen solution may be that of Fe(N₂H₃COO)₃⁻.
Keywords
Hrčak ID:
340925
URI
Publication date:
15.12.1980.
Visits: 160 *