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Dielectric and Piezoelectric Characteristics of the (Na,K)(Nb,Sb)O3Ceramics as a Function of Na Excess Addition
Na 과잉 첨가에 따른 (Na, K)(Nb, Sb)O3세라믹스의 유전 및 압전 특성
2011
Journal of the Korean Institute of Electrical and Electronic Material Engineers
Na 과잉 첨가에 따른 (Na, K)(Nb, Sb)O3세라믹스의 유전 및 압전 특성
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In this study, lead-free (K0.5Na0.5+X)(Nb0.96Sb0.04)O3+0.2mol%La2O3+1.2mol% K4CuNb8O23 (X= 0∼ 0.025) ceramics were fabricated by normal sintering method at 1060℃ for 5 h. Microstructures, piezoelectric and dielectric properties of specimens were investigated with special emphasis in the influence of Na excess addition. The grain size of specimen was slightly decreased with increasing Na content. In the 2 [mol%] Na excess addition of NKNS ceramics, density, electromechanical coupling factor,
doi:10.4313/jkem.2011.24.4.285
fatcat:q6no7ejisngyfkak5zwhz6cwxq