preparing a source material including alloy containing particles having at least one alloy phase selected from a Group IB IIIA alloy phase, a Group IIB IVA alloy phase and a Group IB VA alloy phase, {HEAD ~ alloys} of said selected Group constituting greater than about 50 molar percent of the first elements of said selected Group and greater than {TAIL ~ about 50 molar percent} of the second elements of said selected Group, in said source material 
constituting greater than
preparing a source material including alloy containing particles having at least one alloy phase selected from a Group IB IIIA alloy phase , a Group IIB IVA alloy phase and a Group IB VA alloy phase , { HEAD ~ alloys } of said selected Group constituting greater than about 50 molar percent of the first elements of said selected Group and greater than { TAIL ~ about 50 molar percent } of the second elements of said selected Group , in said source material
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 OTH OTH OTH OTH REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH