A process 1, further comprising annealing said {HEAD ~ superconducting phase} at {TAIL ~ a temperature} in the range of 250° 600° C. in an oxygen atmosphere 
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A process 1 , further comprising annealing said { HEAD ~ superconducting phase } at { TAIL ~ a temperature } in the range of 250 ° 600 ° C. in an oxygen atmosphere
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH