block substrate pressure tempsample compound mgo ybco mgo mtorr u00b0 c ______________________________________895 ba sub 2 insbo sub 6 x x 150 800894 ba sub 2 scsbo sub 6 x x 1 500883 sr sub 2 scsbo sub 6 x x 1 400881 sr sub 2 scsbo sub 6 x x 1 400880 sr sub 2 scsbo sub 6 x x 1 300869 sr sub 2 scsbo sub 6 x 15 550868 sr sub 2 scsbo sub 6 x 1 500852 sr sub 2 insbo sub 6 x 30 600826 sr sub 2 gasbo sub 6 x 170 800815 sr sub 2 scsbo sub 6 x x 170 800814 sr sub 2 gasbo sub 6 x x 130 800______________________________________ analysis of x ray diffraction data obtained from single layer films of a 2 mesbo 6 on 100 mgo reveals that the 400 reflection of the perovskite phase when ordered or the 200 reflection when not ordered are the most intense similarly when sr 2 mesbo 6 is deposited on ybco 001 100 mgo 400 or 200 is the most intense reflection of the perovskite film specific results are given in table iv below table iv______________________________________ observed x ray reflections antimonatestructure ybco mgo reflection intensity______________________________________ba sub 2 insbo sub 6 mgo 200 100 very weak 400 110 very weak 200 very strong 400 weakba sub 2 insbo sub 6 ybco mgo 002 200 200 very strong 003 004 005 006 113 007 008ba.