The method 1 wherein {HEAD ~ the non magnetic bump material} comprises TaO, or {TAIL ~ Ta} 
The method 1 wherein { HEAD ~ the non magnetic bump material } comprises TaO , or { TAIL ~ Ta }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH TAIL TAIL TAIL TAIL TAIL