It has been customary to compute the effect of spin-orbit coupling on the magnetic properties of transition metal ions in crystals with the expression taken over from atomic spectroscopy, although this expression is valid only in a spherically symmetric field. In the present work, we show how the use of a spin-orbit interaction Hamiltonian derived from the Bethe-Salpeter approximation to the relativistic Breit equation for a partly covalent complex leads to a dependence of the gyromagnetic factor on the spin-orbit coupling parameter of the ligand atoms. We develop an expression of g for a d8-ion in a cubic field and apply it to the case of KNiF3. The calculated g values agree very well with experimental results. Other differences between our expression and those found by other authors are discussed.
Documento: | Artículo |
Título: | Gyromagnetic factors and spin-orbit coupling in ligand field theory |
Autor: | Misetich, A.A.; Buch, T. |
Filiación: | Facultad de Ciencias Exactas, Universidad de Buenos Aires, Argentina |
Año: | 1964 |
Volumen: | 41 |
Número: | 8 |
Página de inicio: | 2524 |
Página de fin: | 2529 |
DOI: | http://dx.doi.org/10.1063/1.1726298 |
Título revista: | The Journal of Chemical Physics |
ISSN: | 00219606 |
Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00219606_v41_n8_p2524_Misetich |