• Title, Summary, Keyword: PSN-PZT

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The Effect of Non-180$^{\circ}$Domain on the Piezoelectric and Dielectric Properties of the PSN-PZT Ceramics under Alternating Strong Electric Field (교류강전계가 PSN-PZT 압전체의 압전 및 유전 특성에 미치는 non-180$^{\circ}$분역 효과)

  • 윤만순;채홍인
    • Journal of the Korean Ceramic Society
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    • v.37 no.9
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    • pp.871-878
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    • 2000
  • 본 연구는 3mol% Pb(Sb$_{1}$2/Nb$_{1}$2/)O$_3$가 첨가된 상경계 영역의 Pb(Zr,Ti)O$_3$(PSN-PZT) 세라믹스에 대하여 RT66A와 광섬유센서를 이용하여, 교류강전계 하에서 압전 및 유전특성을 조사하였다. PSN-PZT 세라믹스의 압전 및 유전 특성에 미치는 non-180$^{\circ}$분역 재배열의 영향을 평가하기 위하여 RT66A와 MTI-2000 Fotonic$^{TM}$ sensor를 이용하여 인가전계와 주파수의 함수로 전계유기변위를 측정하였다. 그 결과, 교류강전계 하에서 전계유기변위는 강전계, 저주파수에서 큰 이력현상을 나타내고, 전계유기변위로부터 결정된 유효압전상수는 주파수가 감소할수록 증가하는 거동을 나타내고 있으며, 이러한 거동은 non-180$^{\circ}$분역 재배열의 영향으로 해석되었다.

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Microstructures and Electrical Properties of PSN-PZT Ceramics for Piezoelectric Speaker (압전 스피커 응용을 위한 PSN-PZT계 세라믹스의 미세구조 분석 및 전기적 특성 평가)

  • Kim, Sung-Jin;Kweon, Soon-Yong
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.32 no.2
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    • pp.110-115
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    • 2019
  • $Pb(Sb_{0.5}Nb_{0.5})_x(Zr_{0.51}Ti_{0.49})_{1-x}O_3$ (abbreviation: PSN-PZT) ceramics were synthesized, using conventional bulk ceramic processing technology, with various PSN doping contents. The maximum density of PSN-PZT was 97% of the theoretical density in the samples sintered at $1,250^{\circ}C$. The maximum values of the piezoelectric properties achieved using the conventional processes were: $k_p$ of 0.625, $d_{33}$ of 531 pC/N, and $g_{33}$ of $33mV{\cdot}m/N$. Finally, we fabricated a piezo-speaker with the optimized PSN-PZT ceramics. The SPL of the speaker was measured at a distance of 1 m, with a driving voltage of $40V_{rms}$ in the frequency range of ~300 Hz to 9 kHz. The measured $SPL_{max}$ was at a very high level (95 dB), which was superior in quality in comparison with those of other commercial products.

Effect of MnO2 on piezoelectric properties of PSN-PZT ceramics for piezoelectric actuator applications (압전 액츄에이터용 PSN-PZT 세라믹스의 압전 특성에 미치는 MnO2 첨가 효과)

  • Choi, J.W.;Song, K.H.;Kim, H.J.;Yoon, S.J.;Yoo, K.S.
    • Journal of Sensor Science and Technology
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    • v.16 no.2
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    • pp.120-125
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    • 2007
  • The effect of $MnO_{2}$ as a sintering additive on the microstructures and the piezoelectric properties, especially mechanical quality factor, of 0.05 Pb$(Sb_{0.5}Nb_{0.5})O_{3}$-0.95 Pb$(Zr_{0.52}Ti_{0.48})O_{3}$ (PSN-PZT) piezoelectric ceramics was investigated. The samples were sintered at $1250^{\circ}C$ for 2 h. The crystal structure and surface morphology of the sample were examined using XRD and FE-SEM, respectively. A study on the influence of $MnO_{2}$ additives on the dielectric and piezoelectric properties showed that the $MnO_{2}$-added PSN-PZT system exhibited a high mechanical quality factor and well-situated piezoelectric properties. The optimized results of $d_{33}$ (319 pC/N), $k_{p}$ (55 %), and $Q_{m}$ (751.24) were obtained at 0.2 wt% $MnO_{2}$ added PSN-PZT piezoelectrics.

Piezoelectric Characteristics of PZT-PSN Ceramics Depending on WO3Addition (PZT-PSN 세라믹스의 WO3의 첨가량에 따른 압전 특성)

  • 배숙희;김성곤;김철수;이경화;이상렬
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.15 no.9
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    • pp.794-797
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    • 2002
  • Piezoelectric properties of PZT-PSN ceramics were investigated as a function of WO$_3$ addition from 0 wt% to 6.0 wt%. The dielectric and piezoelectric characteristics of PZT-PSN ceramics have been investigated at different calcination (80$0^{\circ}C$~90$0^{\circ}C$) and sintering (110$0^{\circ}C$~130$0^{\circ}C$) temperatures. The grain size was increased with the addition of WO$_3$and the sintering temperatures. Anisotropic properties of electromechanical coupling coefficient and piezoelectric coefficient are proven to be dependent on processing temperatures and amount of addition. At the specimen with 0.6 wt% WO$_3$ addition, using calcination temperature of 80$0^{\circ}C$ and sintering temperature of 110$0^{\circ}C$ , mechanical quality factor(Q$_{m}$) and electromechanical coupling coefficient(k$_{p}$) showed the excellent results of 1560 and 0.48, respectively Experimental results indicated that the PZT-PSN system ceramics with WO$_3$impurity could be effectively used for the microtransformer and actuator applications, etc.etc.

The effect of PNW substitution on dielectric and piezoelectric properties of PSN-PZT Ceramics (PNW 치환이 PSN-PZT 세라믹스에 유전 및 압전특성에 미치는 영향)

  • Woo, Won-Hee;Oh, Dong-On;Ryu, Ju-Hyun;Ryu, Sung-Lim;Kim, Yong-Woon;Jeong, Yeong-Ho
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.322-325
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    • 2002
  • In this study, dielectric and piezoelectric properties of PSN-PZT Ceramic were investigated as a function of PNW substitution. With the increase of PNW substitution, teragonality, Curie temperature and mechanical quality factor were decreased but grain size and electromechanical coupling factor(kp) was gradully increased. At 4 mol [%] PNW substitution. maximum kp of 0.567 was shown.

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Microstructure and Piezoelectric Characteristics of PSN-PZT Ceramics as a Function of PNW Substitution (PNW 치환에 따른 PSN-PZT 세라믹스의 미세구조 및 압전특성)

  • 류주현;우원희;오동언;류성림
    • Journal of the Korean Institute of Electrical and Electronic Material Engineers
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    • v.16 no.10
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    • pp.892-896
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    • 2003
  • In this study, microstructure and piezoelectric properties of PSN-PZT ceramics modified with BiFeO$_3$ were investigated as a function of PNW substitution. With the increase of PNW substitution, tetragonality, Curie temperature and mechanical quality factor were decreased but grain size and electromechanical coupling factor(kp) was gradually increased. At 4 mol[%] PNW substitution, maximum kp of 0.567 was obtained.

Ihe Electrical and Piezoelectric Characteristics of PZT-PSN ceramics added $MnO_2$ ($MnO_2$가 첨가된 PZT-PSN압전세라믹의 압전 및 전기적특성 분석)

  • 김성곤;김철수;박정호;이상렬
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.161-164
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    • 2001
  • In this paper, we investigated the dielectric and piezoelectric properties of Pb(Sb, Nb)O$_3$-Pb(Zr, Ti)O$_3$ ceramic(PSN) for piezoelectric transformer and actuator etc. Effect of MnO$_2$ addition on the PSN ceramic was investigated. Anisotropic properties of electromechanical coupling factor and piezoelectric properties proved to be varied with amount of MnO$_2$ impurity and sintering temperature. The electromechanical coupling factor k$_{p}$ of 0.38 and the mechanical quality factor Q$_{m}$ of 1944 were obtained from the specimen with 0.4 wt% MnO$_2$ sintered at 115$0^{\circ}C$ addition. Experimental results indicated that the PSN ceramic with MnO$_2$ impurity can be effectively used for piezoelectric transformer and actuator.tor.

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Effect of CeO2 on piezoelectric properties of PSN-PZT ceramics for a hypersonic sound speaker application (지향성 스피커용 PSN-PZT 세라믹스의 압전 특성에 미치는 CeO2 첨가 효과)

  • Choi, J.B.;Song, K.H.;Kim, H.J.;Hwang, S.I.;Yoo, K.S.
    • Journal of Sensor Science and Technology
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    • v.17 no.2
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    • pp.127-132
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    • 2008
  • The effect of $CeO_2$ as a sintering additive on the microstructure and the piezoelectric property of yPb$(Sb_{0.5}Nb_{0.5})O_3$-(1-y)Pb$(Zr_{0.52}Ti_{0.48})O_3$ ($0{\leq}y{\leq}0.1$, PSN-PZT) for a hypersonic sound speaker (HSS) application was investigated. The samples were sintered at $1250^{\circ}C$ for 2 h. The crystal structure and surface morphology of the samples were examined using XRD and FE-SEM, respectively. Study on the influence of $CeO_2$ additives on the dielectric and piezoelectric properties indicated that the $CeO_2$-added PSN-PZT system had a high piezoelectric properties. The optimized results of ${\varepsilon}_r=1209$, $K_p$=52% $d_{33}$=351(pC/N) and $Q_m$=1230.16 were obtained at 0.4 wt.% $CeO_2$-added PSN-PZT.

Energy Efficient Alloy Design in PSN-PMN-PZT Ceramic System for Piezoelectric Transformer Application (고효율 압전 트랜스포머용 PSN-PMN-PZT 조성 설계)

  • Choi Yong-Gil;Ur Soon-Chul;Yoon Man-Soon
    • Korean Journal of Materials Research
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    • v.15 no.12
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    • pp.814-817
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    • 2005
  • In order to enhance energy efficiency in high electric conversion devices such as Power transformers, which need to have high power properties, an alloy design approach in $Pb(Zr,Ti)O_3(PZT)$ base ceramic system was attempted $0.03Pb(Sb_{0.5}Nb_{0.5})O_3-0.03Pb(Mn_{1/3}Nb_{2/3})O_3-(0.94-x)PbTiO_3-xPbZrO_3$[PSN-PMN- PZT] ceramics were synthesized by conventional bulk ceramic processing technique. To improve power properties, the various Zr/Ti ratio was varied ]lear their morphotropic phase boundary (MPB) composition of PSN-PMN-PZT system and their effects on subsequent piezoelectric and dielectric properties for the transformer application at high power were systematically investigated using an impedance analyzer. Microstructure and phase information were characterized using X-ray diffractometer (XRD), a scanning electron microscope (SEM) and others. When the Zr/Ti ratio was 0.415/0.465, the value of $Q_m\;and\;k_p$ were shown to reach to the maximum, indicating that this alloy design can be a feasible composition :or high power transformer.

Dielectric and Piezoelectric Properties in PSN-PNN-PZT Ceramics (PSN-PNN-PZT 세라믹스의 유전 및 압전 특성)

  • 윤광희;류주현;박창엽;정회승;서성재;신광호
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • pp.255-258
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    • 2000
  • In this study, the structural, dielectric and piezoelectric properties of Pb[(Sb$\sub$1/2/Nb$\sub$1/2/)$\sub$x/- (Ni$\sub$1/3/Nb$\sub$2/3/)$\sub$0.15-x/- (Zr,Ti)$\sub$0.85/]O$_3$(x = 0, 0.01, 0.02, 0.03, 0.04, 0.05) ceramics is investigated as a function of Pb(Sb$\sub$1/2/Nb$\sub$1/2/)O$_3$ (abbreviated PSN) substitution. With the increase of PSN substitution, the crystal structure is transO$_3$formed from the tetragonal phase to the rhombohedral phase and the grain size is decreased abruptly. The curie temperature is decreased with the PSN substitution. The dielectric constant is increased with the PSN substitution and maximum value of 2290 is obtained at 4mol% PSN. With the PSN substitution, the coercive field is increased and the remnant polarization is decreased. The Electromechanical coupling factor(k$\sub$p/) Is showed the highest value of 0.622 at lmol% PSN and the mechanical quality factor(Q$\sub$m/) is decreased abruptly with the PSN substitution.

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