Abstract
Raman spectroscopy has been used to investigate the domain structures in bismuth-layered-structured ferroelectrics (BLSFs). In Bi 4Ti 3O 12 single crystal, the lowest frequency mode (soft mode) at ∼30 cm −1 appears exclusively for the xx polarization configuration ( x ∥ polar axis ). We found that the polarization dependence of the Raman signal exhibits spatial symmetries that reflect the presence of different domain variants present in Bi 4Ti 3O 12. This highly anisotropic character of the soft mode shares with other BLSFs such as Bi 3.25La 0.75Ti 3O 12 and SrBi 2Ta 2O 9, which demonstrate the usefulness of the soft-mode spectroscopy for the study of ferroelectric domain structures in BLSFs. We also applied Raman spectroscopy to in situ observation of domain structures in Bi 4Ti 3O 12 under applied electric field.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
