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Study of tilted orthorhombic twins and leakage current in epitaxial SmFeO 3 thin films
- Source :
- Journal of Applied Physics. 125:234102
- Publication Year :
- 2019
- Publisher :
- AIP Publishing, 2019.
-
Abstract
- The effect of oxygen partial pressure (OPP) during deposition on the structural and ferroelectric properties of epitaxial SmFeO 3 (SFO) thin films is studied in the present report. The thin films are deposited using the pulsed laser ablation method. Two (00l) oriented substrates, viz., LaAlO 3 (LAO) and niobium doped SrTiO 3 (Nb:STO), are used for the deposition of films with 35 and 170 nm thicknesses at different OPP values. The prepared films are found to be of single phase and grow in the out-of-plane configuration SFO(hh0)/LAO(00l) using x-ray 2 θ − ω and ϕ scans. The epitaxial relationship between the substrate and the film, domain twinning, is confirmed by reciprocal space map measurements. Films of higher thickness exhibit tilted twin structures, more prominently for the films prepared at lower OPP. A significant change in the leakage current is observed as a function of OPP, and the results are explained in terms of the microstructure of the films.The effect of oxygen partial pressure (OPP) during deposition on the structural and ferroelectric properties of epitaxial SmFeO 3 (SFO) thin films is studied in the present report. The thin films are deposited using the pulsed laser ablation method. Two (00l) oriented substrates, viz., LaAlO 3 (LAO) and niobium doped SrTiO 3 (Nb:STO), are used for the deposition of films with 35 and 170 nm thicknesses at different OPP values. The prepared films are found to be of single phase and grow in the out-of-plane configuration SFO(hh0)/LAO(00l) using x-ray 2 θ − ω and ϕ scans. The epitaxial relationship between the substrate and the film, domain twinning, is confirmed by reciprocal space map measurements. Films of higher thickness exhibit tilted twin structures, more prominently for the films prepared at lower OPP. A significant change in the leakage current is observed as a function of OPP, and the results are explained in terms of the microstructure of the films.
- Subjects :
- 010302 applied physics
Materials science
Doping
Analytical chemistry
General Physics and Astronomy
02 engineering and technology
Substrate (electronics)
021001 nanoscience & nanotechnology
Microstructure
Epitaxy
01 natural sciences
Ferroelectricity
0103 physical sciences
Orthorhombic crystal system
Thin film
0210 nano-technology
Crystal twinning
Subjects
Details
- ISSN :
- 10897550 and 00218979
- Volume :
- 125
- Database :
- OpenAIRE
- Journal :
- Journal of Applied Physics
- Accession number :
- edsair.doi...........5bd274b0c62b0f83381511e2cb95e96f
- Full Text :
- https://doi.org/10.1063/1.5083839