Inhomogeneity study of alanine and valine-doped TGS crystal using micro-probe Raman spectroscopy

Author

Jin, B.M. ; Erdei, S. ; Bhalla, A.S.

Author_Institution

Mater. Res. Lab., Pennsylvania State Univ., University Park, PA, USA

fYear

1991

fDate

33457

Firstpage

821

Lastpage

824

Abstract

Micro-probe Raman spectroscopy is used for studying positional inhomogeneity in alanine-doped TGS crystals. 20 data points are measured along the c- and a-axes in b-plane. Several known Raman peaks are observed unchanged, but most other peaks are found to be changed remarkably. The major difference in spectra are found to be related to SO₄ vibrations. The vibrational frequencies are found to be lowered near the seed position. The most unstable spectra are detected in the vicinity of the seed region

Keywords

Raman spectra; crystal defects; crystal morphology; ferroelectric materials; organic compounds; pyroelectricity; vibrational modes; Raman peaks; SO₄ vibrations; alanine-doped TGS crystal; micro-probe Raman spectroscopy; positional inhomogeneity; seed position; seed region; valine-doped TGS crystal; vibrational frequencies; Aging; Amino acids; Crystalline materials; Crystals; Frequency; Optical materials; Polarization; Raman scattering; Spectroscopy; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on

Conference_Location

University Park, PA

Print_ISBN

0-7803-1847-1

Type

conf

DOI

10.1109/ISAF.1994.522503

Filename

522503