Ferroelectric properties of triglycine sulfate crystals doped with glycine analogs

Single crystals of ferroelectric triglycine sulfate doped with glycine analogs serine, threonine, lactic acid, and alaninol were grown via the slow solvent evaporation method. The resulting ferroelectric domain structures and polarization-electric field hysteresis loops revealed that these dopants caused triglycine sulfate to form a multidomain structure. This was attributed to hydrogen bonds not being formed, which is significant in polarization reversal, due to the side chains and the substituents of the dopant molecules. Therefore, the dopants did not affect the surrounding dipoles enough to cause cooperative phenomena, such as dipole-dipole interactions, and do not result in the formation of a single- domain, unlike alanine in our previous study.

Automated summary

Single crystals of ferroelectric triglycine sulfate doped with glycine analogs serine, threonine, lactic acid, and alaninol were grown via the slow solvent evaporation method. The dopants caused the formation of a multidomain structure in triglycine sulfate, as revealed by the ferroelectric domain structures and polarization-electric field hysteresis loops. The absence of hydrogen bonds due to the side chains and substituents of the dopant molecules resulted in a lack of cooperative phenomena and the absence of a single-domain structure, unlike in the case of alanine in a previous study.