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

The present work aims at investigating linear and nonlinear dielectric properties of nanocomposites based on diisopropylammonium bromide (C 6 H 16 NBr, DIPAB) embedded into Al 2 O 3 films having honeycomb structure with pores of 100 nm in diameter, and into opal matrices with three-dimensional struc...

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Bibliographic Details
Published in:Phase transitions 2019-10, Vol.92 (10), p.899-906
Main Authors: Nguyen, Hoai Thuong, Baryshnikov, S. V., Milinskiy, A. Yu, Egorova, I. V., Charnaya, E.V.
Format: Article
Language:English
Subjects:
Aluminum
Aluminum oxide
Curie temperature
Dielectric properties
diisopropylammonium bromide
Electrical properties
Ferroelectric materials
Ferroelectricity
Honeycomb structures
Low temperature
Nanocomposites
Organic ferroelectrics
Phase transitions
Pores
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Summary:The present work aims at investigating linear and nonlinear dielectric properties of nanocomposites based on diisopropylammonium bromide (C 6 H 16 NBr, DIPAB) embedded into Al 2 O 3 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.
ISSN:0141-1594
1029-0338
DOI:10.1080/01411594.2019.1666393