Mechanism of the phase transformation of the pyrochlore phase into the perovskite phase in lead zirconate titanate films on silicon substrates

Кукушкин, С. А.; Tentilova, I. Yu.; Пронин, И. П.

doi:10.1134/s1063783412030158

Cited by 17 publications

(3 citation statements)

References 5 publications

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“…https://www.doi.org/10.33910/2687-153X-2023-4-2-81-87 Spherulitic microstructure of thin PZT films The observed result suggests that the cause of the collinearity of the optical polarization vector and the polarization vector in the spherulite may be radial mechanical stresses during the growth of the spherulite island. According to (Kukushkin et al 2012), such radial mechanical stresses are caused by the difference in the density of the perovskite and pyrochlore phases at perovskite phase crystallization. Since the density of the pyrochlore phase is lower than the density of the perovskite phase, the perovskite island will be subjected to radial tension from the side of the pyrochlore matrix, which will lead to the appearance of a mechanically induced radially oriented polarization.…”

Section: Resultsmentioning

confidence: 99%

Spherulitic microstructure of thin PZT films

Pronin¹,

Сенкевич²,

Elshin³

et al. 2023

PCS

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The paper shows that the formation of a radiant spherulites microstructure in lead zirconatetitanate thin films obtained by radio-frequency magnetron sputtering is associated with the formation of radial tensile mechanical stresses acting in the substrate plane, the magnitude of which increases with increasing linear size of spherulites. It leads to a change in the lattice parameter of the perovskite structure and the appearance of induced polarization, the value of which can significantly exceed the spontaneous polarization.

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Section: Resultsmentioning

confidence: 99%

Spherulitic microstructure of thin PZT films

Pronin¹,

Сенкевич²,

Elshin³

et al. 2023

PCS

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“…We can assume that this shock decrease in activation energy launches slow wave of explosive crystallization, extending from the perovskite phase. Estimates show that the critical temperature of ignition and propagation of a wave may be lower than room temperature [11], due to the huge value of the latent heat of crystallization of PZT, including the elastic interactions energy [12,13], and due to the strain-induced reduction of the activation energy. The described effect is very distinct in the case of short-time annealing t A1 and much weaker with prolonged annealing time.…”

Section: In-situ Investigationmentioning

confidence: 99%

Explosive crystallization of PZT microstructures by femtosecond infrared radiation

Elshin

Firsova

Емелянов

et al. 2015

J. Phys.: Conf. Ser.

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Abstract. The features of microstructure crystallization into perovskite phase in lead zirconate titanate film by femtosecond laser radiation of near-infrared range were discussed. In-situ crystallization kinetics by method of second harmonic generation (SHG) was studied. The presence of several types of crystallization was shown, including ultra-fast (explosive) crystallization occurring immediately after the start of exposure, and slow (self-sustaining) crystallization, occurring after termination of exposure. The advantage of the second-harmonic generation microscopy for the study of annealed microstructures was shown. The morphology of microstructures was investigated by transmission electron microscopy (TEM).

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“…Films with a perfect crystal structure (so-called epitaxial films) can be grown if the lattice constants of the film and the substrate differ by no more than 4% [14,15,[20][21][22][23][27][28][29][30][31][32][33][34]. At the initial stages of film growth, when nanoislands form, it is possible to obtain islands coherently conjugated with the substrate if the lattice mismatch is no greater than 4%.…”

Section: Formation and Evolution Of Nanostructures Under The Action O...mentioning

confidence: 99%

Theory of Phase Transformations in the Mechanics of Solids and its Applications for Description of Fracture, Formation of Nanostructures and Thin Semiconductor Films Growth

Кукушкин

Осипов

2012

KEM

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The brief review of the current state of the theory of first-order phase transitions is given. The basic processes of nucleation and evolution of nanostructure ensembles on crystal surfaces are considered. The general equations describing nanoparticle size distribution, evolution of their average radius and density are deduced. The influence of mechanical pressure on nucleation and property of quantum dots and nanopores is considered. The equations describing new phase nucleation under condition of mechanical pressure caused by distinction in density of an old and new phase are resulted. The kinetic theory of micropore nucleation in solids under loading is described. The kinetic criterion is received of nucleation of micropores and microcracks in fragile solids under the influence of stretching pressure.

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Mechanism of the phase transformation of the pyrochlore phase into the perovskite phase in lead zirconate titanate films on silicon substrates

Cited by 17 publications

References 5 publications

Spherulitic microstructure of thin PZT films

Spherulitic microstructure of thin PZT films

Explosive crystallization of PZT microstructures by femtosecond infrared radiation

Theory of Phase Transformations in the Mechanics of Solids and its Applications for Description of Fracture, Formation of Nanostructures and Thin Semiconductor Films Growth

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