ESR and Optical Study of Mn^<2+> Doped Diglycine Barium Chloride Monohydrate(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

概要

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ESR study of Mn^<2+> doped Diglycine Barium Chloride Monohydrate single crystals has been done at room temperature. The Mn^<2+> spin-Hamiltonian parameters have been evaluated employing a large number of resonant line positions observed for different orientations of the external magnetic field. The values of g, A, B, D, E, and a are 1.9922±0.0002, 89±2×10^<-4>cm^<-1>, 88±2×10^<-4>cm^<-1>, 237±2×10^<-4>cm^<-1>, 80±2×10^<-4>cm^<-1>, and 5±1×10^<-4>cm^<-1> respectively. The optical absorption study of the crystal has also been done. The observed bands are assigned as transitions from the ^6A_<1g>(S) ground state to various excited quartet levels of a Mn^<2+> ion in a cubic crystalline field. These bands are fitted with four parameters B, C, D_q, and α. and the values found for the parameters are B=771 cm^<-1>, C=3053cm^<-1>, D_q=755cm^<-1>, and α=76cm^<-1>. On the basis of the data obtained the surrounding crystalline field and the nature of metal-ligand bonding have been discussed.
社団法人日本物理学会の論文
2006-11-15