Abstract
It is of interest for layered oxides containing copper because they are related to high temperature superconductivity. Among them, LaSrAl1-xCuxO4solid solution has received much attention due to its elastic and elasto-optic properties and application as promising substrate for high- Tcsuperconducting thin films. So many theoretical and experimental works have been done to understand the several characteristics of the LaSrAl1-xCuxO4materials. In this paper, the electron paramagnetic resonance g factors g//, g⊥and hyperfine structure constants A//, A⊥for the tetragonal Cu2+center in LaSrAl1-xCuxO4solid solution are theoretically explained by the method of diagonalizing the full Hamiltonian matrix. The related crystal field parameters are calculated from the superposition model and the local structural parameters of the impurity Cu2+occupying the host Al3+site. The superposition model parameters used in this work are comparable with those for similar tetragonal ( CuO6)10-clusters in the previous works. The calculated results are in reasonable agreement with the observed values. The results are discussed.
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