Abstract

AbstractThe implantation of Ag into MgO (100) single crystals, followed by thermal annealing at 1100°C, leads to dramatic changes in their optical properties. The changes in the optical properties are due to the presence of small Ag clusters which are formed in the annealed samples. The small Ag clusters are obtained by thermal annealing of the implanted MgO crystals between 600°C and 1100°C to investigate the changes in cluster sizes and to correlate with changes in their optical properties. Sample characterization is carried out using optical spectrophotometry to confirm the effective presence of Ag clusters and Rutherford Backscattering Spectrometry (RBS) to study the profile of Ag clusters.

Highlights

  • IOR impiantation is the most successfiil and widespread surface modification technique in insulators and ceramic materials

  • One way to cause dramatic changes in the optical properties is through the formation of small metailic clusters which absorb light at the surface plasmon resonance fiequency [3-51

  • We have found that the implantation of Ag into MgO (100) single crystais, followed by thermal annealing at 1IOO'C, results in the formation of Ag clusters

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Summary

INTRODUCTION

IOR impiantation is the most successfiil and widespread surface modification technique in insulators and ceramic materials. We have found that the implantation of Ag into MgO (100) single crystais, followed by thermal annealing at 1IOO'C, results in the formation of Ag clusters. These small metailic clusters are identified by optical absorption and Rutherford Backscattering Spectrometry (RBS). The positions of the maximum and the &I1 width at half maximum (FWHM) of the optical absorption band are dated IO the sizes of the sinail nietalIic ctisiers Toward this objective, MgO single ciystak were implanted with 1.5 MeV Ag and subjected to thermal annealing at 600"C, 8OO0C, 1000°C and 11OOOC, each sample for 30 minutes

SamDie Preuaration
Optical Absomtion Measurements
Theoretical Considerations
As implanted MgO
LIST OF REFERENCES

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