Phase transitions of caesium nitrate embedded in nanoporous alumina films
In order to make material with improved properties, nanocomposites based on nanoporous Al2O3 films (having different pore sizes) filled with ferroelectric, namely, caesium nitrate CsNO3, have been fabricated, and their electrophysical charactistics have been investigated. The film surfaces were test...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Peter the Great St.Petersburg Polytechnic University
2023-06-01
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| Series: | St. Petersburg Polytechnical University Journal: Physics and Mathematics |
| Subjects: | |
| Online Access: | https://physmath.spbstu.ru/article/2023.66.01/ |
| _version_ | 1797772784991993856 |
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| author | Pavlov Aleksei Stukova Elena Baryshnikov Sergey |
| author_facet | Pavlov Aleksei Stukova Elena Baryshnikov Sergey |
| author_sort | Pavlov Aleksei |
| collection | DOAJ |
| description | In order to make material with improved properties, nanocomposites based on nanoporous Al2O3 films (having different pore sizes) filled with ferroelectric, namely, caesium nitrate CsNO3, have been fabricated, and their electrophysical charactistics have been investigated. The film surfaces were tested by electron microscopy. Temperature dependences of the effective permittivity ε' and of the third harmonic coefficient were measured for the nanocomposites. The phase-transition points were determined by the maximum value of the dε'/dT derivative. The reduction in pore was found to lead to a decrease in the Curie temperature (by more than 30 K) and a phase transition blur. This phenomenon is associated with the influence of intrinsic size effects. |
| first_indexed | 2024-03-12T21:56:58Z |
| format | Article |
| id | doaj.art-5d1f8c02a2724ae9995c0fe09bdcd785 |
| institution | Directory Open Access Journal |
| issn | 2405-7223 |
| language | English |
| last_indexed | 2024-03-12T21:56:58Z |
| publishDate | 2023-06-01 |
| publisher | Peter the Great St.Petersburg Polytechnic University |
| record_format | Article |
| series | St. Petersburg Polytechnical University Journal: Physics and Mathematics |
| spelling | doaj.art-5d1f8c02a2724ae9995c0fe09bdcd7852023-07-25T15:49:15ZengPeter the Great St.Petersburg Polytechnic UniversitySt. Petersburg Polytechnical University Journal: Physics and Mathematics2405-72232023-06-0116210.18721/JPM.1620120714726Phase transitions of caesium nitrate embedded in nanoporous alumina filmsPavlov Aleksei0https://orcid.org/0000-0002-7287-2006Stukova Elena1https://orcid.org/0000-0002-7981-7456Baryshnikov Sergey2https://orcid.org/0000-0002-3362-8975Amur State UniversityAmur State UniversityBlagoveshchensk State Pedagogical UniversityIn order to make material with improved properties, nanocomposites based on nanoporous Al2O3 films (having different pore sizes) filled with ferroelectric, namely, caesium nitrate CsNO3, have been fabricated, and their electrophysical charactistics have been investigated. The film surfaces were tested by electron microscopy. Temperature dependences of the effective permittivity ε' and of the third harmonic coefficient were measured for the nanocomposites. The phase-transition points were determined by the maximum value of the dε'/dT derivative. The reduction in pore was found to lead to a decrease in the Curie temperature (by more than 30 K) and a phase transition blur. This phenomenon is associated with the influence of intrinsic size effects.https://physmath.spbstu.ru/article/2023.66.01/ferroelectriccaesium nitratepermittivityphase transitionnanocomposite |
| spellingShingle | Pavlov Aleksei Stukova Elena Baryshnikov Sergey Phase transitions of caesium nitrate embedded in nanoporous alumina films St. Petersburg Polytechnical University Journal: Physics and Mathematics ferroelectric caesium nitrate permittivity phase transition nanocomposite |
| title | Phase transitions of caesium nitrate embedded in nanoporous alumina films |
| title_full | Phase transitions of caesium nitrate embedded in nanoporous alumina films |
| title_fullStr | Phase transitions of caesium nitrate embedded in nanoporous alumina films |
| title_full_unstemmed | Phase transitions of caesium nitrate embedded in nanoporous alumina films |
| title_short | Phase transitions of caesium nitrate embedded in nanoporous alumina films |
| title_sort | phase transitions of caesium nitrate embedded in nanoporous alumina films |
| topic | ferroelectric caesium nitrate permittivity phase transition nanocomposite |
| url | https://physmath.spbstu.ru/article/2023.66.01/ |
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