Double hysteresis loops in deuterated triglycine sulfate after thermal depolarization

Abstract

The temperature behavior of the hysteresis loops and switching current parameters measured in the increasing field have been studied in single crystals of deuterated triglycine sulfate. We have revealed the hysteresis loops doubling leading to appearance of additional maxima at the field/time dependence of the switching current during cooling from 59.3 to 51.4°С. This effect was attributed to the bias fields arising as a result of bulk screening of depolarization field. Different current maxima corresponded to the switching in the areas with different values of bias field.

Keywords:

• Uniaxial ferroelectric
• polarization reversal
• hysteresis loop
• switching current
• heterophase structure
• local depolarization field
• bulk screening

Acknowledgments

The equipment of the Ural Center for Shared Use “Modern nanotechnology” Ural Federal University (reg. no. 2968), which is supported by the Ministry of Science and Higher Education RF (project No. 075-15-2021-677), was used.

Additional information

Funding

This work was supported by the Russian Science Foundation (grant 21-72-10160).