Theory of Some Magnetic Properties of Cobalt Tutton Salts

概要

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The g-values in the paramagnetic resonance experiment and the static magnetic susceptibilities of the cobalt Tutton salts are calculated under the assumption that the crystalline field is nearly cubic with a small tetragonal component. The values of these quantities depend on the value of a parameter η=4δ / 3λ, where δ is the energy separation between the lowest energy levels when the spin-orbit coupling is disregarded, and λ is the spin-orbit coupling constant. Comparing the theoretical results with the experimental data, we have estimated η=3.5〜4.5 from g-values, η=4〜5 from χ⊥, but the measured values of χ_<11>do not fall between the theoretical curves of χ_<11>versus T with η=4 and 5. This discrepancy is discussed.
理論物理学刊行会の論文