Qt. Zhao et al., DAMAGE ACCUMULATION AND AMORPHIZATION IN GAAS BY MEV SI-IMPLANTATION AT DIFFERENT TILT ANGLES( ION), Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 90(1-4), 1994, pp. 415-418
Damage accumulation and amorphization in GaAs(100) by MeV Si+ ion impl
antation at different tilt angles have been studied using the Rutherfo
rd backscattering and channeling technique. It was found that the tota
l amount of damage increases linearly with the implant dose at doses l
ess than the threshold dose for amorphization. Layer by layer amorphiz
ation was observed at doses higher than the, threshold dose. The damag
e distribution is strongly influenced by the target tilt angle. With a
n increase in the implant tilt angle, the damage level decreases. A mo
del for the damage accumulation and amorphization is discussed.