# Raman and infrared spectra of ferroelectric ${(CH_3NH_2CH_2COO)}_3 CaCl_2$

Acharya, Kumara P and Narayanan, PS (1973) Raman and infrared spectra of ferroelectric ${(CH_3NH_2CH_2COO)}_3 CaCl_2$. In: Journal of Raman Spectroscopy, 1 (5). pp. 499-505.

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## Abstract

Raman spectrum of Tris-sarcosine Calcium chloride has been recorded both in the para and ferroelectric phases using \lambda = 2537 Ã� of mercury as exciting radiation. The infrared absorption spectrum has been recorded both above and below the Curie temperature, in the region $400 to 4000 cm^{-1}$. From the observed splitting of the infrared bands it is concluded that the second order ferroelectric phase transition at 127K is due to a dynamical ordering of sarcosine molecules which exist in zwitteron configuration. Raman spectrum shows eight lattice lines which do not exhibit any anomaly as the crystal undergoes phase transition.

Item Type: Journal Article Copyright of this article belongs to John Wiley and Sons. raman spectra;infrared spectra;ferroelectric;curie temperature;tris sarcosine calcium chloride Division of Physical & Mathematical Sciences > Physics 21 Sep 2005 23 Feb 2012 09:16 http://eprints.iisc.ernet.in/id/eprint/3702