Electrical and Optical Properties of Potassium Niobate Grown by Vertical Bridgman Method

Takashi Takagi; Takashi Fujii; Akira Ando; Yukio Sakabe

doi:10.4028/www.scientific.net/KEM.301.15

Paper Titles

Giant Polarization Properties of Ba-Based Bismuth Layer-Structured Ferroelectrics
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Photoconducting Properties in Oxygen-Deficient Bi₄Ti₃O₁₂
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Electric Properties of Sr_1-xBi_2+xTa_2-yNb_yO₉ Ceramics
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Electrical and Optical Properties of Potassium Niobate Grown by Vertical Bridgman Method
p.15

Processing and Electrical Properties of KNbO₃ Ferroelectric Dense Ceramics Added with Small Amount of Bi₂O₃ and MnCO₃
p.19

Enhanced Piezoelectric Properties of Barium Titanate Single Crystals by Domain Engineering
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Size Effect of Dielectric Properties for Barium Titanate Particles and Its Model
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Raman Piezo-Spectroscopic Investigation of Microscopic Residual Stresses in Ni-MLCC Devices
p.31

Fabrication of Flat PZT Cantilevers through MEMS Technologies and Application to Optical MEMS
p.37

HomeKey Engineering MaterialsKey Engineering Materials Vol. 301Electrical and Optical Properties of Potassium...

Electrical and Optical Properties of Potassium Niobate Grown by Vertical Bridgman Method

Abstract:

Piezoelectric properties of potassium niobate (KNbO3; KN) crystal grown using the Vertical Bridgman method were obtained by a resonance-antiresonance method for a length extensional mode. The crystal was poled at 200°C under an electric field of 70 V/mm applied parallel to one of the spontaneous polarization axes. An electromechanical coupling factor (k31) of 0.248, mechanical quality factor (Qm) of 5700, piezoelectric constant (d31) of 9.6 pC/N, elastic compliance (s11E) of 4.02 pm2/ N, and constant (e33T/e0) of 42 were obtained. The optical absorption coefficient of poled crystal has been less than 1.0 cm-1 in the wavelength region of 400-1600 nm. Comparing these values with the reported one for TSSG-KN, indicated that our VB-KN was of good quality.

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Key Engineering Materials (Volume 301)

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15-18

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https://doi.org/10.4028/www.scientific.net/KEM.301.15

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January 2006

Authors:

Takashi Takagi, Takashi Fujii, Akira Ando, Yukio Sakabe

Keywords:

Bridgman Technique, Ferroelectric Materials, Potassium Niobate

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