Abstract

BOLDU, J.L.; GLEASON, R.J.  and  MUNOZ P., E.. Single crystal EPR study of trivalent gadolinium in Cs₂NaInCl₆ in the 6 - 300 K interval. Rev. mex. fis. [online]. 2005, vol.51, n.2, pp.199-202. ISSN 0035-001X.

A cubic symmetry site is reported for Gd³+ in Cs₂NaInCl₆ at room temperature. The temperature dependence of the cubic spin-Hamiltonian parameter has been measured in the temperature interval 6-300 K using electron paramagnetic resonance (EPR) spectrometry. A thorough EPR examination for a crystal sample clearly demonstrates that there are no new symmetry sites arising in the temperature interval under study (6-300 K) suggesting, therefore, that the site symmetry remains cubic. We fit an analytical expression for the cubic spin-Hamiltonian parameter 6⁰₄ as a function of temperature. The absolute sign of this spin Hamiltonian parameter is also determined.

Keywords : Electron paramagnetic resonance (EPR); Elpasolite crystals; S-state ions; Gd³+.

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