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Synthesis and structure of strontium ferrite nanowires and nanotubes of high aspect ratio

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Abstract

Strontium hexaferrite nanowires and nanotubes were synthesized in porous anodic aluminum oxide templates. Different solution-based synthesis techniques (spin coating, vacuum suction, and dip coating) were investigated. Strontium ferrite nanopowders were also synthesized by a similar sol–gel process. The morphology, structure, and composition of the embedded hexaferrite nanostructures were examined by field emission scanning electron microscope, X-ray diffraction, and transmission electron microscopy. Strontium ferrite wires with Fe/Sr ratios from 10 to 12 under different annealing temperatures of 500–700 °C were studied. The results showed that dip coating could produce fine and uniform strontium ferrite nanowires. The ratio of Fe/Sr of 11 and a calcination temperature of 650 °C were found to be optimum conditions. The produced material may be of importance for novel microwave-frequency nanoscale devices.

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Authors and Affiliations

  1. Department of Materials Engineering, Isfahan University of Technology, Isfahan, 8415683111, Iran

    F. Ebrahimi & F. Ashrafizadeh

  2. Department of Materials Engineering, Malek Ashtar University of Technology, Shahin Shahr, Iran

    S. R. Bakhshi

  3. Fakultät für Physik and Center for Nanointegration (CeNIDE), Universität Duisburg-Essen, Lotharstrasse 1, 47048, Duisburg, Germany

    M. Farle

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  1. F. Ebrahimi
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  2. F. Ashrafizadeh
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Correspondence to F. Ebrahimi.

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Ebrahimi, F., Ashrafizadeh, F., Bakhshi, S.R. et al. Synthesis and structure of strontium ferrite nanowires and nanotubes of high aspect ratio. J Sol-Gel Sci Technol 77, 708–717 (2016). https://doi.org/10.1007/s10971-015-3902-2

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  • DOI: https://doi.org/10.1007/s10971-015-3902-2

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