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Synthesis of lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 thin films by the chelate route

  • Original Paper: Sol-gel and hybrid materials for dielectric, electronic, magnetic and ferroelectric applications
  • Published:
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Abstract

A chemical solution deposition route based on the chelate approach is developed for the synthesis of Ba0.85Ca0.15Zr0.1Ti0.9O3 thin films. This lead-free composition is regarded as one of the most promising for the replacement of Pb(ZrxTi1−x)O3 in practical applications. The synthesis method replaces the highly toxic 2-methoxyethanol route, and offers the advantage of a simple and rapid preparation process. Homogeneous and crack-free thin films with thicknesses of 290 and 490 nm were prepared. Films annealed between 700 and 900 °C develop a single-phase perovskite structure. The electrical properties exhibit a weak frequency dependence for the dielectric constant, low dielectric loss, and ferroelectric behavior.

Highlights

  • A chelate route is developed for the synthesis of Ba0.85Ca0.15Zr0.1Ti0.9O3 thin films.

  • The route involves a rapid, simple and non-toxic reaction method.

  • A well-developed perovskite structure is obtained for films annealed above 700 °C.

  • The lead-free piezoelectric films exhibit good dielectric and ferroelectric properties.

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Acknowledgements

We thank Marcelo Esquivel from Centro Atómico Bariloche (CNEA) for the SEM images. The authors acknowledge financial support from Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET) and Universidad Nacional de Rosario. We also acknowledge the financial support of H2020-MSCA-RISE-2020 MELON Grant No. 872631. MGS thanks support from CIUNR.

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  1. Instituto de Física Rosario, Universidad Nacional de Rosario, 27 de Febrero 210 Bis, (2000), Rosario, Argentina

    N. Mamana, N. Pellegri & M. G. Stachiotti

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  1. N. Mamana
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  2. N. Pellegri
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  3. M. G. Stachiotti
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Correspondence to M. G. Stachiotti.

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Mamana, N., Pellegri, N. & Stachiotti, M.G. Synthesis of lead-free Ba0.85Ca0.15Zr0.1Ti0.9O3 thin films by the chelate route. J Sol-Gel Sci Technol 102, 229–235 (2022). https://doi.org/10.1007/s10971-021-05706-8

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  • DOI: https://doi.org/10.1007/s10971-021-05706-8

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