Double ENDOR measurements in CaF2:Tm2+
- 27 November 1973
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 6 (23) , 3501-3513
- https://doi.org/10.1088/0022-3719/6/23/024
Abstract
The double ENDOR method has been used to measure the relative signs of the hyperfine interactions of the unpaired hole in Tm2+ (4f13) with (a) the 169Tm nucleus, and (b) the 19F ligand nuclei in CaF2. The sign of the interaction (a) is known from theory, hence the measurement determines the sign of the interaction (b); both components A2 and Ap are found to be positive. It has been shown that information about the relative signs of two hyperfine parameters may be obtained in a double ENDOR experiment only if the ENDOR signals are essentially transient, or have a significant transient component. The proportion of transient component is somewhat adjustable by suitable choice of experimental conditions. Rapid spin diffusion tends to decrease the proportion of transient component and hence tends to frustrate measurements of relative signs of hyperfine parameters.Keywords
This publication has 13 references indexed in Scilit:
- Spin-lattice relaxation of Kramers doublets with hyperfine structure in cubic symmetryJournal of Physics C: Solid State Physics, 1972
- Electron-Nuclear Double Resonance ofin CaPhysical Review B, 1971
- ENDOR and relaxations in systems with I=S=1/2:169Tm2+and171Yb3+in CaF2Journal of Physics C: Solid State Physics, 1971
- Double endor measurement of the signs of ligand hyperfine interaction parameters for Tm2+ in CaF2Physics Letters A, 1970
- Theory of Saturation and Double Resonance Effects in ESR Spectra. IV. Electron–Nuclear Triple ResonanceThe Journal of Chemical Physics, 1969
- Evidence for covalency in Tm2+ and Yb3+ in calcium fluorideJournal of Physics C: Solid State Physics, 1968
- Electron nuclear double resonance of divalent thulium in calcium fluorideProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1965
- Relative signs of hyperfine coupling constants by a double ENDOR experimentProceedings of the Physical Society, 1964
- Packet-Shifting Electron-Nuclear Double-Resonance MechanismsPhysical Review B, 1964
- Electron Spin Resonance Experiments on Donors in Silicon. I. Electronic Structure of Donors by the Electron Nuclear Double Resonance TechniquePhysical Review B, 1959