S. Ohshima et al., Relationship between the surface resistance and crystal orientation of YBa2Cu3O7-delta thin film, IEEE APPL S, 11(1), 2001, pp. 3493-3496
We have examined the relationship between in-plane orientation, grain size,
fluctuation of grain axis and surface resistance of YBa2Cu3O7-delta (YBCO)
films. The surface resistance of YBCO films with a mixture of (100) and (1
10) in-plane grains was larger than that of the films with perfect in-plane
orientation. The behavior of surface resistance could be explained by the
degree of grain boundaries of (100) and (110) in-plane orientation. The sur
face resistance of YBCO films was proportion to the fluctuation of grain ax
is. It was also proven that surface resistance of high-temperature supercon
ductors is affected by the critical current.