Abstract
It is shown that unusually rapid energy transfer between neighboring lanthanide ions in dielectric crystals is caused by the efficient short-range interaction, which is similar to the magnetic superexchange interaction. Both these interactions are related to virtual transition of electrons between lanthanide ions via common bridge ligands. A general method is developed for calculating matrix elements of the effective superexchange Hamiltonian, and the rates of energy transfer in exchange-coupled pairs of lanthanide ions are estimated. The possibility of using the superexchange model of energy transfer for analysis of up-conversion in lanthanide crystals is discussed.
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References
M. Eyal, R. Reisfeld, A. Schiller, et al., Chem. Phys. Lett. 140, 595 (1987).
D. L. Dexter, J. Chem. Phys. 21, 836 (1953).
F. Auzel, J. Lumin. 45, 341 (1990).
F. Pellé and Ph. Goldner, Phys. Rev. B: Condens. Matter 48, 9995 (1993).
U. Schäfer, J. Neukum, N. Bodenschatz, et al., J. Lumin. 60/bd61, 633 (1994).
P. W. Anderson, Phys. Rev. B 115, 2 (1959).
V. S. Mironov, J. Phys.: Condens. Matter 8, 10551 (1996).
M. P. Hehlen, K. Krämer, H. U. Güdel, et al., Phys. Rev. B: Condens. Matter 49, 12475 (1994).
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Translated from Optika i Spektroskopiya, Vol. 88, No. 3, 2000, pp. 419–423.
Original Russian Text Copyright © 2000 by Mironov.
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Mironov, V.S. Superexchange mechanism of energy transfer between neighboring lanthanide ions in dielectric crystals. Opt. Spectrosc. 88, 372–376 (2000). https://doi.org/10.1134/1.626804
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DOI: https://doi.org/10.1134/1.626804