LaCrO3 heteroepitaxy on SrTiO3(001) by molecular beam epitaxy
Journal Article
·
· Applied Physics Letters, 99(6):Art. No. 061904
Stoichiometric, epitaxial LaCrO3 films have been grown on TiO2-terminated SrTiO3(001) substrates by molecular beam epitaxy using O2 as the oxidant. Film growth occurred in a layer-by-layer fashion, giving rise to structurally excellent films and surfaces which preserve the step-terrace structure of the substrate. The critical thickness is in excess of 500 Å. Near-surface Cr(III) is highly susceptible to further oxidation to Cr(V), leading to the formation of a disordered phase upon exposure to atomic oxygen. Recovery of the original epitaxial LaCrO3 phase is readily achieved by vacuum annealing.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1024533
- Report Number(s):
- PNNL-SA-80732; APPLAB; 35200; KC0203020; TRN: US201119%%445
- Journal Information:
- Applied Physics Letters, 99(6):Art. No. 061904, Vol. 99, Issue 6; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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