Abstract
Differences in the thermal expansion between epitaxially grown films and the substrate result in a considerable strain of the deposit. Whenever a certain critical film thickness is exceeded the stress is inevitably relaxed by fracture. This problem is most prominent for YBa2Cu3O7-δ films deposited on silicon substrates. We have studied the mechanism of crack formation in more detail, especially the part played by the surface morphology of the YBa2Cu3O7-δ films. Theoretical limits are compared with experimental findings.
Original language | English |
---|---|
Pages (from-to) | 223-225 |
Number of pages | 3 |
Journal | Journal of Alloys and Compounds |
Volume | 195 |
Issue number | C |
DOIs | |
State | Published - 10 May 1993 |