Epitaxial growth of BaO and SrO with new crystal structures using mass-separated low-energy O+ beams
- 1 February 1993
- journal article
- Published by Springer Nature in Journal of Materials Research
- Vol. 8 (2) , 321-323
- https://doi.org/10.1557/jmr.1993.0321
Abstract
The growth of BaO and SrO on SrTiO3(100) substrates using mass-separated low-energy (50 eV) O+ beams has been studied using x-ray diffraction, reflection high-energy electron diffraction, and high-resolution transmission electron microscopy. It was found that the BaO and SrO films have been epitaxially grown with new structures different from those of corresponding bulk crystals: The BaO films have a cubic structure with a lattice constant of 4.0 Å, and the SrO films have a tetragonal structure with a lattice constant of a = 3.7 Å parallel to the substrate and with c = 4.0 Å normal to the substrate.Keywords
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