The etch rate of LiTaO3 in CF4/CHF3 plasmas was increased by similar to 50%
by prior implantation with MeV O2- ions. The etch rate of LiTaO3 was shown
to increase with ion dose, indicating an effect of the implant-induced nuc
lear damage on the etch process. In general terms, the reactive ion etching
of LiTaO3 in CF4/CHF3 plasmas has been identified as a process of ion-enha
nced chemical etching. (C) 1999 Elsevier Science B.V. All rights reserved.