Linear and nonlinear dielectric properties of nanocomposites based on the organic ferroelectric of diisopropylammonium bromide

ABSTRACT

The present work aims at investigating linear and nonlinear dielectric properties of nanocomposites based on diisopropylammonium bromide (C₆H₁₆NBr, DIPAB) embedded into Al₂O₃ films having honeycomb structure with pores of 100 nm in diameter, and into opal matrices with three-dimensional structure containing pores of 100 and 60 nm. The obtained results indicated the shift of Curie point toward lower temperatures for DIPAB in porous aluminum oxide and the appearance of two phase transitions, detected upon heating and cooling for DIPAB in opal matrices. In addition, a ferroelectric phase was found to form between these two phase transitions without significant change of Curie temperature.

KEYWORDS:

• Organic ferroelectrics
• nanocomposites
• diisopropylammonium bromide
• dielectric properties
• phase transitions

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Hoai Thuong Nguyen http://orcid.org/0000-0003-1290-5221

Additional information

Funding

This work was supported by the RFBR [grant number 19-29-03004].