EPR in LiTbF4 using an HCN laser |
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Authors: | P de Groot F Leempoels J Witters F Herlach I Laursen |
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Institution: | Afdeling Lage Temperaturen en Hoge-Veldenfysika, Katholieke Universiteit Leuven, B-3030 Leuven, Belgium;Department of Electrophysics, The Technical University of Denmark, DK-2800 Lyngby, Denmark |
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Abstract: | The Tb3+ electron paramagnetic resonances of a spherically shaped LiTbF4 single crystal were measured with the static magnetic field along the c-axis, using an HCN laser at 890.8 and 964.3 GHz. At 4.2 K the measured spectrum consists of four hyperfine lines which have a spacing of 25.0± 0.2 mT and a width of roughly 10 mT. The g-factor is 17.75 ± 0.1 at both frequencies. In each hyperfine line of the spectrum at 4.2 K a superimposed structure is seen. This structure is explained by changes in the dispersion of the LiTbF4 crystal. |
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