ESR Investigations of Nearest-NeighborPairs in Lanthanum Ethyl Sulfate
- 1 January 1970
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 1 (1) , 108-113
- https://doi.org/10.1103/physrevb.1.108
Abstract
The ESR spectrum of nearest-neighbor ion pairs in single crystals of hydrated lanthanum ethyl sulfate containing approximately 0.1- and 1-wt.% gadolinium has been identified and measured at 77°K. It has been found that the nature of the pair interaction is primarily dipolar, although a small superexchange interaction is also present. The best theoretical fit of the experimental pair spectrum is obtained with a spin Hamiltonian characterized by the crystalline-field parameters , , and the dipolar and exchange interaction constants and , all in units of .
Keywords
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