a DRP URA-CNRS 71, Université Paris 6, 75252, Paris Cedex 05, France
b CRISMAT-ISMRA, URA-CNRS 1318, 14050, Caen Cedex, France
c SNCI-CNRS, 166X, 38042, Grenoble Cedex, France
d SPSRM CEA Saclay, 91191, Gir-sur-Yvette Cedex, France
Abstract:
Magnetic measurements on single crystals and Mössbauer spectra of powders under magnetic field, recorded on Fe2+ doped K2ZnF4, have been analyzed in the spin Hamiltonian formalism. The data slightly depart from the expectations of a spin 2 in D4h symmetry. The occurrence of vibronic effects is discussed.