Laser Raman spectra of semicarbazide hydrobromide

Srinivasan, V. ; Seetharaman, S. ; Raghunathachary, B. ; Subramanian, C. K. ; Narayanan, P. S. (1981) Laser Raman spectra of semicarbazide hydrobromide Ferroelectrics, 39 (1). pp. 1159-1162. ISSN 0015-0193

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Semicarbazide hydrobromide which is isomorphous with SEM.HCl, was expected to belong to a new family of ferroelectrics. Dielectric, thermal and other studies on these crystals have yielded results which show many peculiarities but not confirmed ferroelectricity in the low temperature phase. As such a Laser Raman spectrosocopic study of oriented singe crystals of SEM.HBr was made at 298°K and at 253°K. The results have been correlated with structural features and compared with SEM.HCl.

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