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Ferroelectrics Volume 575, 2021 - Issue 1
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Research Article

Dielectric properties of ferroelectric diisopropylammonium iodide embedded in porous glass

A. Yu. Milinskiya Faculty of Physics and Mathematics, Blagoveschensk State Pedagogical University, Blagoveschensk, RussiaCorrespondence[email protected]
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,
S. V. Baryshnikova Faculty of Physics and Mathematics, Blagoveschensk State Pedagogical University, Blagoveschensk, RussiaView further author information
,
E. V. Charnayab Physics Department, St. Petersburg State University, St. Petersburg, RussiaView further author information
&
I. V. Egorovaa Faculty of Physics and Mathematics, Blagoveschensk State Pedagogical University, Blagoveschensk, RussiaView further author information
Pages 56-63 | Received 17 Aug 2020, Accepted 30 Dec 2020, Published online: 26 May 2021
 
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Abstract

The results of a study of the permittivity ε΄ and the third harmonic coefficient γ3ω of diisopropylammonium iodide (DIPAI), embedded in porous glass with a pore size of ∼100 nm, are presented. For DIPAI in pores, the temperature of the lower phase transition upon heating increases by 5 K, compared to bulk DIPAI, and is 368 ± 1 K. The upper phase transition is not observed up to 450 K, which is close to the melting point of DIPAI (∼453 K). Upon cooling, one phase transition is observed at a temperature of 364 ± 1 K.

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Funding

This work was supported by the RFBR (grant number 19-29-03004).

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