Ukrainian Journal of Physical Optics

Number 4, Volume 3, 2002

Crystallooptical Properties of Ferroics with the Dimethylammonium Cation ( DMA-MeCl4, Me=Cu, Zn; DMA-MnCl3 ) in the Region of their Phase Transitions
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V.Kapustianyk, V.Bazhan, Yu. Korchak, S.Sveleba, V.Mokryi

The results of investigations of the crystallooptical effects in the ferroics with dimethylammonium-cation performed in vicinity of phase transitions using Senarmont’s method are presented in the paper. The existence of incommensurate phase in DMA-CuCl4 crystals was confirmed within the framework of 279.5-296 K. Besides, the phase sequence for DMA-ZnCl4 and DMA-MnCl3 compounds has been amended.

Key words: ferroics, incommensurate phase, piezooptic, electrooptic, dimethylammonium.

PACS: 77.80.-e; 78.20.Hp

doi 10.3116/16091833/3/4/258/2002

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