EPR study ofimpurities in crystalline
- 1 February 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 53 (6), 3415-3421
- https://doi.org/10.1103/physrevb.53.3415
Abstract
The electron paramagnetic resonance of an (S=5/2) impurity in the ferroelastic phase of a single crystal has been investigated. The rotation patterns of the resonance fields measured on the crystallographic planes are analyzed with the monoclinic spin Hamiltonian. The determined parameters are =1.976, =0.0033, =1.995, =1.994, and =467.3, =2339, =1693, =0.12, =-2.3, =-0.8, =4, and =-0.3 in units of the . The principal X, Y and Z axes of the D tensor are found to be along the crystallographic c*+30.5°, a+30.5° in the c*a plane, and b axis, respectively. The zero-field splitting (ZFS) parameters D and E are calculated both within the point-charge electrostatic model and the superposition model. Comparison of experimental data with calculated second-order axial and rhombic ZFS parameters suggests that the impurity substitutes for the ion in . © 1996 The American Physical Society.
Keywords
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