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Some aspects of Cu incorporation into SrTiO3 structure

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Abstract

The series of copper-doped strontium titanate materials with the assumed formula SrTi1−xCuxO3 (where x = 0.01, 0.02, 0.05) were obtained by the sol–gel method. The synthesis of materials was undertaken towards evaluation of the possibility of their application in modern technologies in the field of energy storage and conversion. Materials were obtained in the form of powders and sintered bodies. Both types of these materials were tested for structural (XRD analysis), microstructural (SEM), reduction-oxidizing properties (TPR/TPOx methods). For sinters also electrical properties (conductivity and Seebeck coefficient) were determined. The phase composition analysis and the TPR results showed significant differences between the samples in the form of powders and sinters. The influence of copper oxide melting on the materials properties was observed. The measurements of the Seebeck coefficient confirm that copper is an acceptor dopant for strontium titanate. The results of total conductivity measurements carried out in the air atmosphere indicate that the addition of copper causes an increase in conductivity, with the highest value obtained for the material with the highest amount of copper introduced.

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Acknowledgements

The publication is financed from the Subsidy No. 16.16.160.557 of the Polish Ministry of Science and Education.

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Authors and Affiliations

  1. Faculty of Materials Science and Ceramics, AGH University of Science and Technology, al. Mickiewicza 30, 30-059, Kraków, Poland

    Paulina Gwóźdź, Agnieszka Łącz, Adrian Mizera & Ewa Drożdż

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  1. Paulina Gwóźdź
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  2. Agnieszka Łącz
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  3. Adrian Mizera
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  4. Ewa Drożdż
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Contributions

PG—synthesis of materials, writing and co-editing of the manuscript. AŁ—carrying out the tests of electrical properties, preparation of test DC results and interpretation, writing and co-editing of the manuscript. AM—participation in the synthesis of materials, preparation of the results of diffractometric measurements, performing the Rietveld analysis. ED—concept of research and publication, execution of TPR research and their interpretation, writing and co-editing of the manuscript.

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Correspondence to Ewa Drożdż.

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Gwóźdź, P., Łącz, A., Mizera, A. et al. Some aspects of Cu incorporation into SrTiO3 structure. J Therm Anal Calorim 147, 9949–9958 (2022). https://doi.org/10.1007/s10973-022-11306-7

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  • DOI: https://doi.org/10.1007/s10973-022-11306-7

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