Diffusion of Pr3+ ions in silver halide crystals

L. Nagli, A. German, A. Katzir

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


The diffusion of Pr3+ ions in AgBr and AgCl0.77Br0.23 single crystals has been investigated by a method based on measuring the luminescence intensity distribution along the diffusion direction. The diffusion constants D0 for these crystals were 3.8×10-6 and 7.95 cm2/s; and the enthalpy of diffusion H values were 0.4 and 1.25 eV, respectively. A strong influence of the silver halide composition on Pr3+-ions diffusion parameters was observed. The low value of the diffusion enthalpy found for these ions is described in terms of an associated complex 3+-ion - cation vacancy motion by an exchange mechanism. The influence of the radius of the rare earth ions on the diffusion enthalpy is discussed.

Original languageEnglish
Pages (from-to)243-248
Number of pages6
JournalOptical Materials
Issue number1-2
StatePublished - 2001
Externally publishedYes


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