The source material includes Group IB IIIA alloy containing particles having at least one Group IB IIIA alloy phase, with {TAIL ~ Group IB IIIA alloys} constituting greater than about 50 molar percent of the Group IB elements and greater than about 50 molar percent of {HEAD ~ the Group} IIIA elements in the source material 
The source material includes Group IB IIIA alloy containing particles having at least one Group IB IIIA alloy phase , with { TAIL ~ Group IB IIIA alloys } constituting greater than about 50 molar percent of the Group IB elements and greater than about 50 molar percent of { HEAD ~ the Group } IIIA elements in the source material
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH