TY - JOUR
AU - D.M Hwang
AU - T.S Ravi
AU - Ramamoorthy Ramesh
AU - S.-W Chan
AU - C.Y Chen
AU - L Nazar
AU - X.D Wu
AU - A Inam
AU - T Venkatesan
AB - Various orientations of YBa2Cu3O7-x grains in polycrystalline films prepared on (001)MgO substrates by in situ laser deposition were determined using electron diffraction. Eight different types of in-plane orientations have been observed. These orientations agree well with the prediction of a simplified theory of near coincidence site lattice between YBa2Cu3O7-x and MgO. The YBa2Cu 3O7-x grains were found to have a high probability of forming low angle or low Σ boundaries among themselves. These grain boundaries are of low energy and should exhibit a high connectivity of Cu-O-Cu chains. Therefore, YBa2Cu3O7-x thin films on MgO can attain a Tc of ∼90 K and a Jc of ∼10 6 A/cm2 at 77 K.
BT - Applied Physics Letters
DO - 10.1063/1.104138
LA - eng
M1 - 16
N1 - cited By 123
N2 - Various orientations of YBa2Cu3O7-x grains in polycrystalline films prepared on (001)MgO substrates by in situ laser deposition were determined using electron diffraction. Eight different types of in-plane orientations have been observed. These orientations agree well with the prediction of a simplified theory of near coincidence site lattice between YBa2Cu3O7-x and MgO. The YBa2Cu 3O7-x grains were found to have a high probability of forming low angle or low Σ boundaries among themselves. These grain boundaries are of low energy and should exhibit a high connectivity of Cu-O-Cu chains. Therefore, YBa2Cu3O7-x thin films on MgO can attain a Tc of ∼90 K and a Jc of ∼10 6 A/cm2 at 77 K.
PY - 1990
SP - 1690
EP - 1692
T2 - Applied Physics Letters
TI - Application of a near coincidence site lattice theory to the orientations of YBa2Cu3O7-x grains on (001) MgO substrates
VL - 57
SN - 00036951
ER -