Sintering and piezoelectric properties of lead-free (K sub(0.38)Na sub(0.58)Li sub(0.04))(Nb sub(0.86)Ta sub(0.10 )Sb sub(0.04))O sub(3) ceramics doped with Fe sub(2)O sub(3)

Lead-free (K sub(0.38)Na sub(0.58)Li sub(0.04))Nb sub(0.86)Ta sub(0.10)Sb sub(0.04))O sub(3 ) (KNLNTS) + x mol% Fe sub(2)O sub(3) (x = 0 ~ 1) ceramics were prepared by conventional solid state reaction technique. The effect of Fe sub(2)O sub(3) doping on the phase structure, microstructure and elect...

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Published inIOP conference series. Materials Science and Engineering Vol. 18; pp. 1 - 6
Main Authors Ok, Yun-Po, Ji, Han-Na, Kim, Ki-Soo, Tai, Weon-Pil, Seol, Jeong-Hyeon, Hong, In-Ki, Lee, Jae-Shin
Format Journal Article
LanguageEnglish
Published 01.01.2011
Subjects
Actuators
Ceramics
Constants
Curie temperature
Densification
Electrical properties
Lead free
Piezoelectricity
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Summary:Lead-free (K sub(0.38)Na sub(0.58)Li sub(0.04))Nb sub(0.86)Ta sub(0.10)Sb sub(0.04))O sub(3 ) (KNLNTS) + x mol% Fe sub(2)O sub(3) (x = 0 ~ 1) ceramics were prepared by conventional solid state reaction technique. The effect of Fe sub(2)O sub(3) doping on the phase structure, microstructure and electrical properties of KNLNTS ceramics were studied. The addition of Fe sub(2)O sub(3) was found to be effective in enhancing densification of KNLNTS ceramics. When x = 0.3, the piezoelectric constant d sub(33) and planar piezoelectric coupling coefficient k sub(p) reached highest while maintaining a relatively high Curie point of 318 [degrees]C; d sub(33)=257 pC/N and k sub(p) = 52 %, which suggests that the ceramics are promising for electromechanical transducer and actuator applications.
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ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/18/9/092053