TY - JOUR KW - Superconducting materials KW - Laser Beams–Applications KW - Stacking Defects KW - Superconducting Films–Thin Films KW - Yttrium Compounds–Thin Films KW - Cationic Vacancy Ordered Defect Structure KW - Laser-Deposited Thin Films KW - Yttrium Barium Copper Oxide Thin Films AU - Ramamoorthy Ramesh AU - T.S Ravi AU - D.M Hwang AU - A Inam AU - X.X Xi AU - X.D Wu AU - T Venkatesan AU - R Kilaas AB - The Y2Ba4Cu8O16 phase is the most common stacking defect observed in laser-deposited YBaCuO thin films. In this we report for the fist time, the existence of a cationic vacancy ordered Y2Ba4Cu8O16 structure in which every alternate pair of Cu atoms in the two chain layers are missing. This new structure is a polytype of the Y1Ba2Cu3O7 phase, i.e. it has the "Y2Ba4Cu8O16" structure but the "Y1Ba2Cu3O7" composition. Some possible causes and consequences of the formation of this defect structure are discussed. © 1990. BT - Materials Letters DO - 10.1016/0167-577X(90)90006-8 LA - eng M1 - 1-2 N1 - cited By 1 N2 - The Y2Ba4Cu8O16 phase is the most common stacking defect observed in laser-deposited YBaCuO thin films. In this we report for the fist time, the existence of a cationic vacancy ordered Y2Ba4Cu8O16 structure in which every alternate pair of Cu atoms in the two chain layers are missing. This new structure is a polytype of the Y1Ba2Cu3O7 phase, i.e. it has the "Y2Ba4Cu8O16" structure but the "Y1Ba2Cu3O7" composition. Some possible causes and consequences of the formation of this defect structure are discussed. © 1990. PY - 1990 SP - 23 EP - 27 T2 - Materials Letters TI - Direct observation of a new cationic vacancy ordered defect structure in laser-deposited superconducting YBaCuO thin films VL - 10 SN - 0167577X ER -