• Title/Summary/Keyword: Pb(Mg1/3Nb2/3)O3-PbTiO3

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Electrical properties of Low Fired Pb(Mg,Te,Mn,Nb)$O_3-Pb(Zr,Ti)O_3$ Ceramics (저온에서 소결한 Pb(Mg,Te,Mn,Nb)$O_3-Pb(Zr,Ti)O_3$세라믹스의 전기적 특성)

  • 정수태;조상희
    • Electrical & Electronic Materials
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    • v.9 no.7
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    • pp.652-659
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    • 1996

  • Sintering characteristics and electrical properties of xPb(Mg$_{1}$8/Te$_{1}$8/Mn$_{1}$4/Nb$_{1}$2/) $O_{3}$-(1-x) Pb (Zr$_{1}$2/ $Ti_{1}$2/) $O_{3}$ (x=0.075, 0.1, 0.125) ceramics are investigated. A sintering temperature of ceramics could be reduced to 950.deg. C by a reaction between PbO and B site compound material. The physical properties of 0.1Pb(Mg, Te, Mn, Nb) $O_{3}$ - 0.9Pb(Zr, Ti) $O_{3}$ bulk ceramic with 3wt% glass frit(0.857PbO-0.143W $O_{3}$) were following : den = 7.95 g/cm$^{3}$, T$_{c}$=340.deg. C, .epsilon.$_{33}$= 754, k$_{31}$=0.3 and Q.=1780. The 3-layer piezoelectric transformer by using a tape casting method showed a good monolithic structure, and its voltage setup ratio was 2.5 times higher than that of a single device by using bulk ceramics.s.s.

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Dielectric and Piezoelectric Characteristics of Ceramics in the $Pb(Mg_{1/2}W_{1/2})O_3-Pb(Ni_{1/3}Nb_{2/3})O_3-PbTiO_3-PbZrO_3$ system ($Pb(Mg_{1/2}W_{1/2})O_3-Pb(Ni_{1/3}Nb_{2/3})O_3-PbTiO_3-PbZrO_3$계 세라믹스의 유전 및 압전 특성)

  • Kim, Woo-Hyun;Yoon, Kwang-Hee;Yoon, Hyun-Sang;Park, Yong-Wook;Park, Chang-Yeop
    • Proceedings of the KIEE Conference
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    • 1994.11a
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    • pp.193-195
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    • 1994

  • In this study, the structural, dielectric and piezoelectrical properties of $xPb(Mg_{1/2}W_{1/2})O_3-(1-x)[0.41Pb(Ni_{1/3}Nb_{2/3})O_3-0.36PbTiO_3-0.23P Zr)_3]$ (x=0, 0.01, 0.02, 0.03, 0.04, 0.05) system ceramics were investigated. The dielectric constant ${\varepsilon_{33}}^{\tau}$ at loon temperature increased up to 3mol% PMW and decreased with further PMW content. The specimen with 1mol% $Pb(Mg_{1/2}W_{1/2})O_3$, which has the ${\varepsilon_{33}}^{\tau}=5509$, kp=59[%] and $d_{33}=758{\times}10^{-12}[C/N]$, exhibits good characteristics.

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Dielectric and strain properties of Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$-PbTiO$_{3}$ Ceramic with Respect to the Variation of SrTiO$_{3}$ Substitution (SrTiO$_{3}$ 고용에 따른 Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$-PbTiO$_{3}$계 세라믹스의 유전 및 전왜특)

  • 지승한;이해영;이덕출;이진걸;이연학
    • The Transactions of the Korean Institute of Electrical Engineers
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    • v.45 no.2
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    • pp.235-241
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    • 1996

  • In this paper dielectric and electrostrictive strain properties of (1-y-x)Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$-PbTiO$_{3}$$-yPbTiO_{3}-xSrTiO_{3}[(1-y-x)PMN-yPT-xST]$ ceramics fabricated by using columbite precursor method have been investigated with the substitution of SrTiO$_{3}$(ST). Dielectric constant of the specimens increased with the increase of ST content up to 5[m/o] and decreased with further substitution of ST. And the pyrochlore phase decreased with the increase of ST content up to 5[m/o] in XRD analysis. The elimination of the pyrochlore phase improved dielectric constants. The electrostrictive strains generated by AC electric field have the highest value at 5[m/o] SrTiO$_{3}$ addition and the hysteresis of strain ranged from 12 to 20[%]. The electrostrictive strain at various temperature investigated in the temperature range of $-50[^{\circ}C]~74[^{\circ}C].$ In higher temperature than phase transition region, it showed paraelectric property which shows very small hystersis.

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