Abstract
We discuss the hetero-epitaxy of complex oxides taking YBa2Cu3O7-δ as an example. Special emphasis is on films grown by pulsed laser deposition (PLD), but other growth techniques are also discussed. Lattice mismatch in three directions is responsible for the fact that a real single crystalline YBa2Cu3O7-δ thin film has not yet been obtained. Nevertheless, growth features typically observed on single crystals (e.g. growth spirals as well as repeated nucleation and growth) are often found on YBa2Cu3O7-δ thin films. We discuss how surface diffusion and supersaturation influence the surface morphology (as observed by atomic force and scanning tunnelling microcopies (AFM/STM)) of complex oxide thin films. In particular, we conclude that the kinetic energy of the impinging adatoms affects the surface diffusivity and therefore the growth mode.
| Original language | English |
|---|---|
| Pages (from-to) | 217-226 |
| Number of pages | 10 |
| Journal | Journal of Materials Science: Materials in Electronics |
| Volume | 9 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1998 |
Bibliographical note
Funding Information:We would like to thank G. Doornbos, J. Huijbregtse, F. Hill (University of Wuppertal), F. Klaassen, J. C. Martinez (University of Mainz), U. Poppe (KFA Julich), J. Rector, C. Træholt, R. Surdeanu, and R. Griessen for supplying us with films, various data, and useful discussions. This work is part of the research program of FOM (Fundamenteel Onderzoek der Materie) which is financialy supported by NWO (Nederlands Wetenschappelijk Onderzoek).