The EPR and spin-lattice relaxation are studied of impurity rare-earth ions in LiLuF4 crystals at liquid-helium temperatures. It is detected that paramagnetic relaxation of Er3+ ions is retarded by the effect of the phonon throat. The effect of resonance attenuation of the phonon throat is clarified in two-phonon resonance relaxation processes of Er3+ ions. The Debye temperature of the crystal is determined from an analysis of experimental results.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 2, pp. 24–27, February, 1988.
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Abdulsabirov, R.Y., Antipin, A.A., Korableva, S.L. et al. EPR and spin-lattice relaxation of rare-earth ions in LiLuF4 monocrystals. Soviet Physics Journal 31, 104–106 (1988). https://doi.org/10.1007/BF00896529
- Relaxation Process
- Debye Temperature
- Paramagnetic Relaxation
- Resonance Relaxation