Growth rate induced monoclinic to tetragonal phase transition in epitaxial BiFeO{sub 3} (001) thin films

Journal Article · Sun Mar 06 23:00:00 EST 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3561757· OSTI ID:21518314

Huajun, Liu ^[1]; Ping, Yang ^[2]; Kui, Yao ^[3]; Wang, John ^[1]

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1. Department of Materials Science and Engineering, National University of Singapore, Singapore 117574 (Singapore)
2. Singapore Synchrotron Light Source (SSLS), National University of Singapore (NUS), 5 Research Link, Singapore 117603 (Singapore)
3. Institute of Materials Research and Engineering, A-STAR (Agency for Science, Technology and Research), Singapore 117602 (Singapore)

Epitaxial BiFeO{sub 3} thin films were deposited on SrRuO{sub 3} buffered SrTiO{sub 3} (001) substrates at different growth rates by varying the radio frequency sputtering power. With increasing growth rate, the crystal structure of BiFeO{sub 3} films develops from monoclinic lattice to a mixture phase of tetragonal lattice T{sub 1} with c/a{approx}1.05 and giant tetragonal lattice T{sub 2} with c/a{approx}1.23, finally to a single tetragonal phase T{sub 2}, as shown by high resolution synchrotron x-ray diffraction reciprocal space mappings. The observed phase transitions, induced by film growth rate, offer an alternative strategy to manipulate crystalline phases in epitaxial ferroelectric thin films.

• OSTI ID: 21518314
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 10 Vol. 98; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
COHERENT SCATTERING
CRYSTAL GROWTH METHODS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
CRYSTAL-PHASE TRANSFORMATIONS
DEPOSITION
DIELECTRIC MATERIALS
DIFFRACTION
EPITAXY
FERRIMAGNETIC MATERIALS
FERRITES
FERROELECTRIC MATERIALS
FILMS
IRON COMPOUNDS
LAYERS
MAGNETIC MATERIALS
MATERIALS
MONOCLINIC LATTICES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
SCATTERING
SPUTTERING
STRONTIUM COMPOUNDS
STRONTIUM TITANATES
SUBSTRATES
TETRAGONAL LATTICES
THIN FILMS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION