Abstract
Time resolved spectroscopy of Eu2+ aggregates in the NaCl system — at different stages of the aggregation process — shows a non‐exponential behaviour of time decay signals that is interpreted in terms of excitation migration and up‐conversion processes in a fractal geometry. Following this model, the spectral dimension of such aggregates is obtained from the time decay profiles. The analysis of experimental results suggests a model (fluctuation‐percolation triggered aggregation, FPTA) for the aggregation process.
Original language | English (US) |
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Pages (from-to) | 527-531 |
Number of pages | 5 |
Journal | physica status solidi (b) |
Volume | 139 |
Issue number | 2 |
DOIs | |
State | Published - Feb 1 1987 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics