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Ferroelectrics Volume 605, 2023 - Issue 1
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Research Article

Dielectric and thermal properties of rubidium nitrate embedded into porous aluminum oxide films

S. V. Baryshnikova Blagoveshchensk State Pedagogical University, Blagoveshchensk, RussiaCorrespondence[email protected]
,
A. Yu. Milinskya Blagoveshchensk State Pedagogical University, Blagoveshchensk, Russia
,
E. V. Charnayab St. Petersburg State University, St. Petersburg, Russia
&
E. V. Stukovac Amur State University, Blagoveshchensk, Russia
Pages 8-14 | Received 24 Aug 2022, Accepted 12 Jan 2023, Published online: 15 Mar 2023
 
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Abstract

The results of studying the dielectric permittivity, the third harmonic coefficient, and the DTA signal for Al2O3 nanoporous matrices filled with rubidium nitrate are presented. A shift of the phase transition Tc ≈ 437 K by 3 K to the low-temperature region and an increase in the temperature hysteresis of the phase transition from 14 K for polycrystalline RbNO3 to 33 K for RbNO3 in the pores of the Al2O3 oxide film were found.

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