Proceedings of the Indian Academy of Sciences - Section A

, Volume 65, Issue 6, pp 368-375

First online:

ESR study of dibarium copper formate tetrahydrate

Part II. Optical absorption and temperature dependence of spin-hamiltonian parameters
  • T. Ramasubba ReddyAffiliated withDepartment of Physics, Indian Institute of Science
  • , R. SrinivasanAffiliated withDepartment of Physics, Indian Institute of Science

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The variations in certain spin-Hamiltonian parameters of the Cu++ ion in dibarium copper formate tetrahydrate with temperature have been studied. Optical absorption investigations on single crystals of the salt at room temperature and 90° K. are reported. The results are discussed in terms of a model in which vibronic mixing of certain electron levels of the Cu++ ion play an important role.