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Electrical Properties of Textured Potassium Strontium Niobate (KSr2Nb5O15) Ceramics Fabricated by Reactive Templated Grain Growth

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Highly [001] textured KSr2Nb5O15 (KSN) ceramics were fabricated by templated grain growth using acicular KSN template particles (5–15 wt%) and reactive matrix of SrNb2O6 and KNbO3. Excess Nb2O5 (1–1.5 wt%) was added as a liquid former. Increasing sintering temperature and time resulted in increased texture with a maximum texture fraction of 0.98. Dielectric, ferroelectric, and piezoelectric measurements indicate anisotropic properties that are close to single crystal values in the textured ceramics with the highest Pr≈18 C/cm2, Ps≈25 C/cm2, and d33=65 pC/N obtained in the c-axis direction.
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Document Type: Research Article

Affiliations: 1: Department of Materials Science and Engineering, Gebze Institute of Technology, 41400 Gebze, Kocaeli, Turkey 2: Materials Science Centre, The University of Manchester, Manchester, M1 7HS, U.K.

Publication date: May 1, 2008

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