@article{34016,
  author = {T.S Ravi and D.M Hwang and Ramamoorthy Ramesh and S.W Chan and L Nazar and C.Y Chen and A Inam and T Venkatesan},
  title = {Grain boundaries and interfaces in Y-Ba-Cu-O films laser deposited on single-crystal MgO},
  abstract = {Y-Ba-Cu-O thin films were deposited on [001] MgO using pulsed laser deposition. The films are granular with the c axis normal to the surface and the a-b axes locked into several preferred orientations. The grain sizes range from a few hundred to a few thousand nanometers. The misorientation of the Y-Ba-Cu-O grains with respect to the MgO could be predicted by a modified version of the coincident site lattice theory, where near coincidence as opposed to exact coincidence is sought. The resulting boundaries between adjacent Y-Ba-Cu-O grains were found to be dominated by four types of low-energy boundaries, namely, low-angle, special crystallographic, near special crystallographic, and high-angle noncrystallographic boundaries. The critical current observed in this material is as high as 5×105 A cm-2 at 77 K and is believed to be a result of clean, low-energy boundaries with a high density of connected Cu-O-Cu bonds in adjacent Y-Ba-Cu-O grains. © 1990 The American Physical Society.},
  year = {1990},
  journal = {Physical Review B},
  volume = {42},
  number = {16},
  pages = {10141-10151},
  issn = {01631829},
  doi = {10.1103/PhysRevB.42.10141},
  note = {cited By 44},
  language = {eng},
}