Crystallization features and physical properties of the thin-film heterostructure of lead zirconate titanate – lead oxide

Keywords: Thin film heterostructure of lead zirconate titanate and lead oxide, Crystallization of pyrochlore and perovskite phases, Differential scanning calorimetry, Thermal analysis, Atomic force microscopy, Pyroelectricity

Abstract

    Various diagnostic techniques aimed at studying the structure and physical properties (synchronous thermal analysis, atomic force microscopy operating in the current measurement mode, electron-probe X-ray spectral microanalysis, dynamic method for determining the pyroelectric response) were used to study the crystallization features and physical properties of the thin-film heterostructure PZT – PbO1+x formed by a two-stage technique of RF magnetron sputtering of a ceramic target.
    During the first stage, amorphous films were deposited on a “cold” platinized silicon substrate, while the second stage involved high-temperature annealing in air. It was shown that annealing of amorphous films and crystallization of the intermediate pyrochlore phase are accompanied by additional oxidation of the structure resulting in the formation of lead orthoplumbate and lead dioxide and additional oxidation of organic inclusions. The presence of a liquid phase of lead oxide contributes to the formation of the pyrochlore phase.
     It was found that lead oxide layers have significantly higher through conductivity than perovskite blocks. It was assumed that the increased conductivity of lead oxide layers is associated with lead dioxide, which has high conductive properties. Self-polarized thin films were detected to have an abnormal electrical response to the strobing thermal exposure, including the typical pyroelectric response, local photoconductivity shunted by layers of the perovskite phase, and through photoconductivity. The presence of photoconductivity is also associated with the conductive properties of lead dioxide

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Author Biographies

Igor P. Pronin, Ioffe Institute, 26 Polytechnicheskaya, St. Petersburg 194021, Russian Federation

Dr. Sci. (Phys.–Math.), Leading
Researcher, Department of Physics of Dielectrics and
Semiconductors, Ioffe Institute (St. Petersburg,
Russian Federation)

Evgeny Yu. Kaptelov, Ioffe Institute, 26 Polytechnicheskaya, St. Petersburg 194021, Russian Federation

Cand. Sci. (Phys.–Math.),
Senior Researcher, Department of Physics of Dielectrics
and Semiconductors, Ioffe Institute (St. Petersburg,
Russian Federation)

Ekaterina V. Gushchina, Ioffe Institute, 26 Polytechnicheskaya, St. Petersburg 194021, Russian Federation

Cand. Sci. (Phys.–Math.),
Researcher, Department of Solid State, Ioffe Institute
(St. Petersburg, Russian Federation)

Stanislav V. Senkevich, Ioffe Institute, 26 Polytechnicheskaya, St. Petersburg 194021, Russian Federation; The Herzen State Pedagogical University of Russia, 48 Moika Emb., St. Petersburg 191186, Russian Federation

Cand. Sci. (Phys.–Math.),
Senior Researcher, Department of Physics of Dielectrics
and Semiconductors, Ioffe Institute (St. Petersburg,
Russian Federation)

Vladimir P. Pronin, The Herzen State Pedagogical University of Russia, 48 Moika Emb., St. Petersburg 191186, Russian Federation

Dr. Sci. (Phys.–Math.), Professor
of Physics Department, Herzen State Pedagogical
University of Russia (St. Petersburg, Russian
Federation)

Igor I. Ryzhov, The Herzen State Pedagogical University of Russia, 48 Moika Emb., St. Petersburg 191186, Russian Federation

Cand. Sci. (Phys.–Math.), Assistant
Professor of Physics Department, Herzen State
Pedagogical University of Russia (St. Petersburg,
Russian Federation)

Valerii L. Ugolkov, Institute of Silicate Chemistry of Russian Academy of Sciences, 2 Makarov Emb., St. Petersburg 199034, Russian Federation

Cand. Sci. (Tech.), Leading
Researcher, Laboratory of Physical-Chemical Design
and Synthesis of Functional Materials, Institute of
Silicate Chemistry of Russian Academy of Sciences (St.
Petersburg, Russian Federation)

Olga N. Sergeeva, Tver State University, 33 Zhelyabova, Tver 170100, Russian Federation

Cand. Sci. (Phys.–Math.), Leading
Engineer of Physics Department Tver State University,
(Tver, Russian Federation)

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Published
2023-10-12
How to Cite
Pronin, I. P., Kaptelov, E. Y., Gushchina, E. V., Senkevich, S. V., Pronin, V. P., Ryzhov, I. I., Ugolkov, V. L., & Sergeeva, O. N. (2023). Crystallization features and physical properties of the thin-film heterostructure of lead zirconate titanate – lead oxide. Condensed Matter and Interphases, 25(4), 564-571. https://doi.org/10.17308/kcmf.2023.25/11483
Section
Original articles