Ferroelectric properties and Raman spectroscopy of the [(CH)N]BiCl compound.

The exploration of ferroelectric hybrid materials is highly appealing due to their great technological significance. They have the potential to conserve power and amazing applications in information technology. In line with this, we herein report the development of a [(CH)N]BiCl tetra-alkyl hybrid compound that exhibits ferroelectric properties.

Phase transitions in (C H N ) [SnCl ]Cl ·1.5H O crystal, studied by NMR and infrared spectroscopy.

The (C H N ) [SnCl ]Cl ·1.5H O complex is a new member of the family of hybrid organic-inorganic perovskite compounds. It exhibits two order-disorder phase transitions with changes in the conformation of aromatic cations at the two transition temperatures 360 and 412 K.

Using Raman spectroscopy to understand the origin of the phase transitions observed in [(C₃H₇)₄N]₂Zn₂Cl₆ compound.

Phase transitions of the centrosymmetric compound, [(C3H7)4N]2Zn2Cl6, were studied by differential scanning calorimetry (DSC), X-ray diffraction, Raman spectroscopy and dielectric measurements. Two reversible order-disorder and displacive phase transitions are observed at T1=327K and T2=347K with 3K and 4K hysteresis respectively, indicating a first order character. The evolution of Raman line shifts, "ν", and the half-width, "Δν", versus temperature show some singularities associated with the transitions, suggesting that they are governed by the reorientational and the displacement of the organic part.

Synthesis, structural characterization and dielectric properties of (C6H9N2)2(Hg0.75Cd0.25)Cl4 compound.

The present paper undertakes the study of a title compound whose structure is (C6H9N2)2(Hg0.75Cd0.25)Cl4.

Polarized Raman study of [N(C3H7)4]2Cd2Cl6 single crystal.

Chemical preparation, mid-infrared and Raman spectra of [N(C(3)H(7))(4)](2)Cd(2)Cl(6) are presented. Polarized Raman spectra of oriented single crystals have been recorded in the range 7-3900 cm(-1) under various polarization configurations with regard to the symmetry and the numbers of several band modes observed in the Raman and infrared spectra. The obtained results are consistent with the theoretical predictions based on the infrared and Raman selection rules.