In Situ Reflection High Energy Electron Diffraction Observation During Growth of YBa2Cu3O7-x Thin Films by Activated Reactive Evaporation
- 1 June 1989
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 28 (6A), L987
- https://doi.org/10.1143/jjap.28.l987
Abstract
Epitaxial growth of (001) oriented YBa2Cu3O7-x (YBCO) on SrTiO3(100) and MgO(100) by activated reactive evaporation was investigated by in situ reflection high energy electron diffraction (RHEED). RHEED observation of the YBCO films on both the substrates demonstrated the formation of the perovskite structure even at initial deposit. A sharp streak in every deposition stage revealed the layer-by-layer growth. The initial deposit on the substrate of MgO with the large mismatch of 9% kept the same in-plane lattice spacing as MgO. The lattice spacing converted from the bulk value of MgO to that of YBCO when the layer became thicker than 12 Å.Keywords
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