Paramagnetic Resonance of Diluted [Cr(NH_3)_6]Cl_3

概要

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Paramagnetic resonance of single crystals of [Cr(NH_3)_6]C1_3 diluted with [Cr(NH_3)_6]C1_3 has been studied at 9.2 kMc/sec and at room temperature. There are three inequivalent complexes [Cr(NH_3)_6]^<3+> that have their x axis of the crystal field all parallel to the b axis of the crystal (mono. clinic) but the y and z axes in different orientations. Parameters D and E in the spin tiarniltonian are also different for the three Cr^<3a+> ions. The apparent spin-orbit coupling in the crystal is estimated from the g value and is found to be in between the values for [Cr(NH_3)_6]^<3+> and [Cr(CN)_6]^<3->. A method is described in the appendix to evaluate E/D from the angles for the static magnetic field where the two transitions M=3/2→1/2 and - 1/2→-3/2 coincide, and formulas are derived for the resonance fields for S=3/2 which are correct to the sixth order of perturbation.
社団法人日本物理学会の論文
1962-09-05