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- Title
Hydrothermal Growth and Orientation of LaFeO 3 Epitaxial Films.
- Authors
Xian, Guang; Zheng, Tongxin; Tao, Yaqiu; Pan, Zhigang
- Abstract
LaFeO3 thin films were successfully epitaxially grown on single-crystalline SrTiO3 substrates by the one-step hydrothermal method at a temperature of 320 °C in a 10 mol/L KOH aqueous solution using La(NO3)3 and Fe(NO3)3 as the raw materials. The growth of the films was consistent with the island growth mode. Scanning electronic microscopy, elemental mapping, and atomic force microscopy demonstrate that the LaFeO3 thin films cover the SrTiO3 substrate thoroughly. The film subjected to hydrothermal treatment for 4 h exhibits a relatively smooth surface, with an average surface roughness of 10.1 nm. X-ray diffraction in conventional Bragg–Brentano mode shows that the LaFeO3 thin films show the same out-of-plane orientation as that of the substrate (i.e., (001)LaFeO3||(001)SrTiO3). The in-plane orientation of the films was analyzed by φ-scanning, revealing that the orientational relationship is [001]LaFeO3||[001]SrTiO3. The ω-rocking curve indicates that the prepared LaFeO3 films are of high quality with no significant mosaic defects.
- Subjects
SUBSTRATES (Materials science); SURFACE roughness; ATOMIC force microscopy; X-ray diffraction; RAW materials; EPITAXY
- Publication
Materials (1996-1944), 2024, Vol 17, Issue 11, p2758
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma17112758