ESR Study of Tb^<3+> and Pr^<3+> in La_2O_2S Single Crystals

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概要

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• The electron spin resonance of Tb^<3+> and Pr^<3+> ions in La_2O_2S single crystals in investigated. The symmetry of the centers were determined with the help of crystal structure considerations. Models for these centers are proposed and the electronic structures of the ground state are discussd. For the Tb^<3+> ion, there are two types of centers, the symmetry of which are characterized by C_<3υ> and C_<1h>, whereas only one type of center with C_<3υ> symmetry was observed for Pr^<3+> ion. The centers having C_<3υ> symmetry are considered to be Tb^<3+> and Pr^<3+> ions which are substituted for La^<3+> ion in the host crystal. The line shape is asymmetric, probably dut to the dynamical Jahn-Teller effect of non-Kramers doublet. The center with C_<1h> symmetry is supposed to be the Tb^<3+> ion which is substituted for the La^<3+> ion with some defect at the nearest sulphur site.

• 社団法人日本物理学会の論文
• 1973-09-05

著者

• Tanabe Motoko

  Central Research Laboratory Hitachi Ltd.

• Aiki Kunio

  Central Research Laboratory Hitachi Ltd.

• Narita Koziro

  Central Research Laboratory Hitachi Ltd.

• Aiki Kunio

  Central Research Laboratory, Hitachi, Ltd.

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