@article{33991,
  author = {A Inam and C.T Rogers and Ramamoorthy Ramesh and K Remschnig and L Farrow and D Hart and T Venkatesan and B Wilkens},
  title = {a-axis oriented epitaxial YBa2Cu3O 7-x-PrBa2Cu3O7-y heterostructures},
  abstract = {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.},
  year = {1990},
  journal = {Applied Physics Letters},
  volume = {57},
  number = {23},
  pages = {2484-2486},
  issn = {00036951},
  doi = {10.1063/1.104179},
  note = {cited By 154},
  language = {eng},
}