Ground State Monoclinic (M-b) Phase in (110) BiFeO3 Epitaxial Thin Films

Journal Article · Sat Dec 31 23:00:00 EST 2005 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2392818· OSTI ID:930603

Xu, G; Li, J; Viehland, D

The lattice structure of (110)-oriented BiFeO{sub 3} epitaxial thin layers has been identified by synchrotron x-ray diffraction. By using (221) and (22{bar 1}) peaks in the (HHL) zone, a ground state monoclinic M{sub b} phase has been observed with lattice parameters of ({beta}; a{sub m}/{radical}2 and c{sub m})=(89.35{sup o}; 3.985 and 3.888 {angstrom}). These results demonstrate a change in phase stability from rhombohedral in bulk single crystals, to monoclinic in epitaxial thin films with two domain states whose polarization is slightly tilted away from [110] towards [111].

• Research Organization: BROOKHAVEN NATIONAL LABORATORY (BNL), NATIONAL SYNCHROTRON LIGHT SOURCE (NSLS)
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 930603
• Report Number(s): BNL--80900-2008-JA
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 22 Vol. 89; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
GROUND STATES
LATTICE PARAMETERS
LAYERS
MONOCRYSTALS
PHASE STABILITY
POLARIZATION
SYNCHROTRON RADIATION
THIN FILMS
X-RAY DIFFRACTION