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Electron spin resonance; lithium hydrazinium sulphate; site location

ESR and optical absorption studies have been carried out on Cu²⁺-doped lithium hydrazinium sulphate single crystals at 303 K. The spin-Hamiltonian parameters evaluated indicate a N₂O₂ square planar environment for Cu²⁺ ion in this lattice. The correlation ofESR and crystal structure data leads us to conclude that Cu²⁺ ion enters the lattice interstitially. Charge compensation is achieved by the release of protons. Using the optical absorption andESR data, bonding parameters and orbital reduction factors are also evaluated.

V Chandra Mouli¹ G Sivarama Sastry²

1. Post Graduate Centre, Godavari Khani, Karim Nagar (Dist) - 505 209, India
2. Department of Physics, University College of Science, Osmania University, Hyderabad - 500 007, India

Published

May 1986

Manuscript received

13 November 1985

Manuscript revised

18 February 1986