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, alloys of said selected Group constituting greater than about 50 molar percent of the first elements of said selected Group and greater than {HEAD ~ about 50 molar percent} of {TAIL ~ the second elements} of said selected Group, in said source material 
of
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 , alloys of said selected Group constituting greater than about 50 molar percent of the first elements of said selected Group and greater than { HEAD ~ about 50 molar percent } of { TAIL ~ 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 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 HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH