Field-assisted Ion Diffusion of Transition Metals and rare-earths in glass for Photonics Materials. | [Proceedings 6th International Bhurban Conference on Applied Sciences and Technology • 2009]

Author(s):

1. S. Ali: INFM - Universita di Padova, via Marzolo, 8, Padova, Italy

2. V. Bello: INFM - Universita di Padova, via Marzolo, 8, Padova, Italy

3. C. Sada: INFM - Universita di Padova, via Marzolo, 8, Padova, Italy

4. F. Gonella: Physical Chemistry Deptt, University Ca` Foscari, Dorsoduro, Venezia, Italy

5. E. Cattaruzza: Physical Chemistry Deptt, University Ca` Foscari, Dorsoduro, Venezia, Italy

6. G. Battaglin: Physical Chemistry Deptt, University Ca` Foscari, Dorsoduro, Venezia, Italy

Abstract:

Field-Assisted Solid-State Ion-Exchange (FASSIE) technique for doping silicate glasses with transition metals and rare earths has been attracting much attention for its potential applications in light waveguides, luminescent materials and for the possibility to realize systems in which formation of metal nanocluster is controlled by suitable post-exchange techniques [1-6]. In the presented experiments, metallic films of Au and Co are deposited onto the soda-lime and borosilicate substrates by the rf-sputtering technique. Metal ions substitute the glass alkali by means of field-assisted diffusion realized at different values of temperature and electric field. Preliminary results are also presented for the direct diffusion of Er owing to the applied field. The nanocomposites were characterized by secondary ion mass and Rutherford backscattering spectrometries, optical absorption and transmission electron microscopy, indicating that the migration not only depends on the experimental parameters but also on the local structure and the chemical phenomenon occurring at the metal/glass interface. The alkali composition in both glasses dramatically changes the diffusion profiles, resulting in a homogenous and uniform in-depth diffusion in borosilicate glass than soda-lime.

Page(s): 143-150

DOI: DOI not available

Published: Journal: Proceedings 6th International Bhurban Conference on Applied Sciences and Technology , Volume: 1, Issue: 0, Year: 2009

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