COLLOIDAL AU AND AG PRECIPITATES FORMED IN AL2O3 BY ION-IMPLANTATION AND ANNEALING
CW WHITE, DK THOMAS, DK HENSLEY, RA ZUHR, JC MCCALLUM, A POGANY, RF HAGLUND, RH MAGRUDER, L YANG
NANOSTRUCTURED MATERIALS | PERGAMON-ELSEVIER SCIENCE LTD | Published : 1993
Ion implantation and thermal annealing have been used to create localized regions containing a high density of colloidal Au or Ag precipitates in Al2O3. These colloidal precipitates give rise to dramatic optical absorption effects through surface plasmon resonance absorption. Strong optical absorption is observed at 2.25 eV for Au implanted Al2O3 and at 2.75 eV for Ag implanted Al2O3 after annealing. Preliminary measurements of the third-order nonlinear optical susceptibility are discussed also. © 1993.