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EPR study of Gd3+ in a ferroelastic BiVO4 single crystal |
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| Authors: | T. H. Yeom S. H. Choh C. Rudowicz M. S. Jang |
| Affiliation: | 1. Department of Physics, Chongju University, Chongju, Republic of Korea 2. Department of Physics, Korea University, Seoul, Republic of Korea 3. Department of Physics and Materials Science, City University of Hong Kong, Hong Kong SAR 4. Department of Physics, Pusan National University, Pusan, Republic of Korea |
| Abstract: | Electron paramagnetic resonance of the Gd3+ ion in a ferroelastic BiVO4 single crystal with a single domain, grown by the Czochralski method, has been investigated at room temperature using a Q-band spectrometer. The rotation patterns of the resonance fields measured in the crystallographic planes are analyzed using a monoclinic spin Hamiltonian. The principal Z-axis of the second-order zero-field splitting tensorD is found to be along the crystallographicb-axis. Spin Hamiltonian parameters together with the principal axes ofg andD tensors in the monoclinic plane show that the local site symmetry of Gd3+ ion in BiVO4 crystal is monoclinic and that the Gd3+ ion substitutes for Bi3+ ion. |
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