Fig. 2. RBS data for target 1 and 2 samples. The results show the ratio of initially
implanted Bi (C0Bi) to that measured via RBS post anneal (CBi). High Bi indicates the
initial implant of bismuth had an areal density of 7 1015 cm2 and low Bi
indicates the initial implant had an areal density of 7 1013 cm2. High Al indicates
the initial implant of aluminium had an areal density of 15 1015 cm2 and low Al
indicates the initial implant had an areal density of 5 1015 cm2. T is the anneal
temperature.