Layer 54 is grown with a strontium (Sr) terminated surface represented in FIG. 9A by hatched line 55 which is followed by the addition of a template layer 60 which includes a surfactant layer 61 and capping layer 63 as illustrated in FIGS. 9B and 9C. Surfactant layer 61 may comprise, but is not limited to, elements such as Al, In and Ga, but will be dependent upon the composition of layer 54 and t