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Research Article | Open Access

Structural, dielectric, and electrical properties of lithium niobate microfibers

Cícero Rafael CENAa( )Ajay Kumar BEHERAbBanarji BEHERAb
UFMS—Federal University of Mato Grosso do Sul, CP. 549, 79070-900, Campo Grande-MS, Brazil
School of Physics, Sambalpur University, Jyoti Vihar, Burla-768019, Odisha, India
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Abstract

Lithium niobate (LiNbO3) fibers, obtained from the heat treatment of composite fibers (polymer/inorganic precursors), were successfully prepared by using the blow-spinning technique. A chemical solution containing Li and Nb ions, added to poly(vinyl pyrrolidone) solution, was used as precursor solution. The best condition for producing composite fibers was determined. The morphology of green and crystallized fibers was characterized by scanning electron microscopy (SEM) and revealed fibrous structure with an average diameter around 800 nm. X-ray diffraction (XRD) measurement revealed a pure LiNbO3 (LN) phase formation. Detailed studies of dielectric response at various frequencies and temperatures exhibited a dielectric anomaly at 364 ℃. The electrical properties (impedance, modulus, and conductivity) of the fibers were studied using impedance spectroscopy technique. The contributions of grain and grain boundary effects were observed in the LN fibers. The activation energy of the composite fibers was found to be 1.5 eV in the high temperature region (325–400 ℃).

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Journal of Advanced Ceramics
Pages 84-92
Cite this article:
CENA CR, BEHERA AK, BEHERA B. Structural, dielectric, and electrical properties of lithium niobate microfibers. Journal of Advanced Ceramics, 2016, 5(1): 84-92. https://doi.org/10.1007/s40145-015-0176-7

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Received: 02 September 2015
Revised: 25 November 2015
Accepted: 03 December 2015
Published: 31 March 2016
© The author(s) 2016

Open Access The articles published in this journal are distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons. org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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