Paramagnetic Resonance in Rare Earth Trichlorides

Abstract

Paramagnetic resonance absorption of all the naturally occurring rare earth trivalent ions in the LaCl₃ structure have been investigated. The results are summarized in the form of a tabulation of the parameters g_∥, g_⊥, A, B, P, Δ in the spin‐Hamiltonian. Theoretical calculations of crystal field states and eigenvalues as well as of g_∥ and g_⊥, based on optical measurements, are discussed.