The Ta concentration in {HEAD ~ the insulating barrier layer} is set to be more than 0 at % but not more than about 7 at % with respect to a total of 100 at % of {TAIL ~ Ti} and Ta constituting the insulating barrier layer 
The Ta concentration in { HEAD ~ the insulating barrier layer } is set to be more than 0 at % but not more than about 7 at % with respect to a total of 100 at % of { TAIL ~ Ti } and Ta constituting the insulating barrier layer
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD 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 TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH