TY - JOUR
AU - A Inam
AU - C.T Rogers
AU - Ramamoorthy Ramesh
AU - K Remschnig
AU - L Farrow
AU - D Hart
AU - T Venkatesan
AU - B Wilkens
AB - We have grown YBa2Cu3O7-x-PrBa 2Cu3O7-y heterostructures with the perovskite a axis normal to the surface of a variety of (001) oriented substrates using the pulsed laser deposition technique. X-ray diffraction studies indicate little or no formation of the traditional c-axis normal orientation usually nucleated on these substrates, while ion channeling, transmission electron microscopy (TEM), and Raman scattering studies reveal a highly ordered crystalline structure similar in quality to that obtained in the best c-axis oriented films. Superconducting transition temperatures, for current transport in the plane of the films, consistently exceed 80 K, but are probably lower than the optimum 92 K transition expected for YBa2Cu3O7-x due to the presence of growth twin boundaries between grains with the c axis oriented along the two substrate directions.
BT - Applied Physics Letters
DO - 10.1063/1.104179
LA - eng
M1 - 23
N1 - cited By 154
N2 - We have grown YBa2Cu3O7-x-PrBa 2Cu3O7-y heterostructures with the perovskite a axis normal to the surface of a variety of (001) oriented substrates using the pulsed laser deposition technique. X-ray diffraction studies indicate little or no formation of the traditional c-axis normal orientation usually nucleated on these substrates, while ion channeling, transmission electron microscopy (TEM), and Raman scattering studies reveal a highly ordered crystalline structure similar in quality to that obtained in the best c-axis oriented films. Superconducting transition temperatures, for current transport in the plane of the films, consistently exceed 80 K, but are probably lower than the optimum 92 K transition expected for YBa2Cu3O7-x due to the presence of growth twin boundaries between grains with the c axis oriented along the two substrate directions.
PY - 1990
SP - 2484
EP - 2486
T2 - Applied Physics Letters
TI - a-axis oriented epitaxial YBa2Cu3O 7-x-PrBa2Cu3O7-y heterostructures
VL - 57
SN - 00036951
ER -