Electric Properties of Sr1-xBi2+xTa2-yNbyO9 Ceramics

Tadashi Takenaka

doi:10.4028/www.scientific.net/KEM.301.11

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 301Electric Properties of Sr1-xBi2+xTa2-yNbyO9...

Electric Properties of Sr_1-xBi_2+xTa_2-yNb_yO₉ Ceramics

Abstract:

The dielectric, ferroelectric and piezoelectric properties of strontium bismuth tantalate niobate, Sr1-xBi2+xTa2-yNbyO9 [SBTN10x(y)] ceramics were investigated. The samples were fabricated by a conventional ceramic fabrication technique. Curie temperature, Tc, increased with an increase in Nb concentration y, and Tc of SBTN2(y) showed two regions with different slopes that divided near y=1.0. The coercive field, Ec, of SBTN2(y) increased with the increase in y and the highest Ec of 90 kV/cm was obtained. SBTN2(0.6) and SBTN2(1.0) showed the highest coupling factor k33 of 0.17 in the SBTN2(x) system.

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Key Engineering Materials (Volume 301)

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11-14

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https://doi.org/10.4028/www.scientific.net/KEM.301.11

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Online since:

January 2006

Authors:

Tadashi Takenaka

Keywords:

Bismuth Layer Structured Ferroelectrics, Curie Temperature, Ferroelectric Property, Piezoelectric Properties, SrBi₂Nb₂O₉, SrBi₂Ta₂O₉

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