Processing, Structural and Electrical Properties of Textured Potassium Strontium Niobate (Ksr₂Nb₅O₁₅) Piezoceramic Fibers

Abstract:

Highly [00 textured KSr₂Nb₅O₁₅ (KSN) ceramic fibers were fabricated by a combination of novel alginate gelation method and templated grain growth using acicular KSr₂Nb₅O₁₅ template particles. Fibers were drawn from alginate based slurries without or with 25 and 100wt% KSN template particles. A texture fraction of 0.90 was obtained in the case of 25 wt% and a single crystal like texture was obtained in the case of 100wt%. Piezocomposites with 1-3 connectivity were prepared from the KSN fibers and their electrical and electromechanical properties were investigated. Dielectric constant of 140, piezoelectric charge coefficient of 45 pC/N, remnant polarization of 16.6 μC/cm² and electric field induced strain of up to 0.035% were obtained from piezocomposites with textured fibers.

• Periodical: Advanced Materials Research (Volume 445)
• Pages: 481-486
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.445.481
• Online since: January 2012
• Authors: Sinan Dursun, Sedat Alkoy
• Keywords: Fiber, KSN, Piezocomposite, Piezoelectric, Texture

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