Abstract
Nanocrystalline strontium zinc titanate/copper nanoparticle (SZT/Cu) with tetragonal phase was prepared by the acidic sol–gel route and calcined at 700 °C. The phase formation, morphology, and spectroscopic properties of the (SZT/Cu) were investigated via the X-ray diffraction (XRD), field emission scanning electron spectroscopy (FE-SEM), and Raman spectroscopy. Raman spectra reflected the internal rearrangement in the internal structure of strontium zinc titanate (SZT) under the effect of Cu. The dielectric properties of SZT/Cu were investigated over a wide frequency range from 4 Hz to 8 MHz at different temperatures. A ferroelectric behavior with a diffuse phase transition is observed in the behavior of the dielectric constant against temperature. The observed Curie temperature is in the range (40 to 50 °C) with a diffuseness coefficient (α) range from (1.12 to 1.49). The antimicrobial activities of the three prepared samples exhibited antimicrobial activities against Staphylococcus aureus (G+ve bacterium), Escherichia coli (G−ve bacterium), Candida albicans (yeast), and Aspergillus niger (fungus). Strontium zinc titanate doped with 6 mol% of Cu showed higher antimicrobial activities more than the rest samples with inhibition zones of 36, 30, 43 and 47 mm for S. aureus, E. coli, C. albicans, and A. niger, respectively.
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The authors are thankful to the help and support of the Science and Technology Development Fund (STDF), Egypt, for financial support, Project ID 25776.
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Abou Hammad, A.B., Bakr, A.M., Abdel-Aziz, M.S. et al. Exploring the ferroelectric effect of nanocrystalline strontium zinc titanate/Cu: Raman and antimicrobial activity. J Mater Sci: Mater Electron 31, 7850–7861 (2020). https://doi.org/10.1007/s10854-020-03323-9
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DOI: https://doi.org/10.1007/s10854-020-03323-9