Rüdiger Berger, Emmanuel Delamarche, et al.
Science
We have unraveled the growth mechanism of Cu-rich precipitates on the surface of c-axis-oriented DyBa2Cu3O7 thin films. Despite the strong oxidation conditions present, the surface of c-axis DyBa2Cu3O7 acts as an ideal nucleation site for Cu2O crystallites, whose (110) planes are parallel to the substrate surface. Once nucleated, they act as effective sinks for the rest of the deposited copper and form large crystals that revert to monoclinic CuO upon cooling. This result has important implications for all currently used thin film growth processes and indicates that smooth surfaces can only be prepared under stringent composition control.
Rüdiger Berger, Emmanuel Delamarche, et al.
Science
Rüdiger Berger, Christoph Gerber, et al.
IMECE 1997
Jean-Marie Antonietti, Jiong Gong, et al.
Review of Scientific Instruments
Md. Nurul Kabir Bhuiyan, Mariela Menghini, et al.
Journal of Vacuum Science and Technology B