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Probing Oxygen Defects in Na 0.5 Bi 0.5 TiO 3 Ferroelectric by Micro‐Raman Spectroscopy
Author(s) -
Selvamani Rachna,
Singh Gurvinderjit,
Sathe Vasant,
Tiwari Vidya Sagar
Publication year - 2018
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201800002
Subject(s) - raman spectroscopy , ferroelectricity , oxygen , materials science , spectroscopy , analytical chemistry (journal) , ceramic , chemistry , optics , optoelectronics , physics , organic chemistry , chromatography , quantum mechanics , dielectric , composite material
Raman spectroscopy of Na 0.5 Bi 0.5 TiO 3 ceramic is carried out at room temperature. In addition to well‐known Raman modes, two extra bands are also observed near 770 and 835 cm −1 . Their presence is conjectured to the presence of oxygen defects in the crystal lattice. The intensity of these bands increases with an increase in oxygen defect concentration. It is proposed that Raman spectroscopy could be a useful tool for detecting the oxygen defects in Na 0.5 Bi 0.5 TiO 3 based ferroelectrics.