Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Preparation of 0.9PMN-0.1PT ceramics by sol-gel process

졸-겔법에 의한 0.9PMN-0.1PT 소결체의 제조

  • 연석주 (동신대학교 세라믹공학과) ;
  • 김종흠 (동신대학교 세라믹공학과) ;
  • 고태석 (동신대학교 세라믹공학과)
  • Published : 2002.02.01
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Abstract

The preparation of 0.9PMN-0.1PT ceramics by the metal alkoxide method and the effect of excess $Mg(OC_2H_5)_2$, $Pb(CH_3COO)_2{\cdot}3H_2O$ are reported. The excess$ Mg(OC_2H5)_2$ addition signficantly affects the rate of perovskite phase formation in 0.9PMN-0.1PT ceramics. The sample by addition of 5 wt% excess $Mg(OC_2H5)_2$ sintered at $1150^{\circ}C$ for 1 hr obtained perovskite single phase and showed 98% of the theoretical density. The dielectric constant of the pellets sintered at $1150^{\circ}C$ was increased by the addition of 5 wt% excess $Mg(OC_2H_5)_2$ and had a maximum value of 15000 at 1 kHz.

본 연구에서는 금속 알콕시드를 이용하여 0.9PMN-0.1PT 소결체를 제조하는데 있어 과량으로 첨가되는 $Mg(OC_2H5)_2$, Pb$(CH_3COO)_2{\cdot}3H_2O$ 등이 페로브스카이트 상의 생성량과 소결 밀도, 유전 상수 등에 미치는 영향을 검토하였다. 졸-겔법으로 0.9PMN-0.1PT 세라믹을 제조함에 있어 $Mg(OC_2H5)_2$를 과량 첨가하는 경우 페로브스카이트 상의 생성율을 증가시키는 효과가 나타났다. 0.9PMN-0.1PT 조성에 $Mg(OC_2H5)_2$를 5wt% 과잉 텀가한 시편을 $1,150^{\circ}C$에서 1시간 소결한 경우 페로브 스카이트 단일상을 얻었으며 이 때의 밀도는 이론 밀도의 98%인 것으로 확인되었다. $1.150^{\circ}C$에서 1시간 유지하여 소결한 시편의 유전 상수는 $Mg(OC_2H5)_2$를 5wt% 과잉 첨가한 경우 증가하였으며, 주파수 1 kHz에서 최대 유전 상수는 15,000의 값을 가졌다.

Keywords

References

  1. Ceram. Int. v.8 no.3 Fomation Mechanism and Ceramic Process of the Ferroelectric Perovskites:Pb(Mg⅓Nb⅔)O³ and Pb(FeNb)O M. Lejeune;J.P. Boilot https://doi.org/10.1016/0272-8842(82)90025-6
  2. Ceram. Int. v.9 no.4 Influence of Ceramic Processing on Dielectric Properties of Perovskite Type Compound:Pb(Mg⅓Nb⅔)O³ M. Lejeune;J.P. Boilot https://doi.org/10.1016/0272-8842(83)90011-1
  3. J. Am. Ceram. Soc. v.73 no.4 The Roll of Excess Magensium Oxide in Determining the Microstructure and Propeties of Lead Magnesium Nibate H.C. Wang;W.A. Schilze https://doi.org/10.1111/j.1151-2916.1990.tb05121.x
  4. J. Am. Ceram. Soc. v.70 no.3 Microstrucural Inhomogeneity in Sintered Pb(Mg⅓Nb⅔)O³·PbTiO³ Based Dielectrics J.P. Guha;H.Y. Andersom https://doi.org/10.1111/j.1151-2916.1987.tb04850.x
  5. J. Kor. Ceram. Soc. v.30 no.8 Effect of PbTiO³ Addition on Dielectric Properties and Extent of PbO Loss in Nd Doped Pb(Mg⅓Nb⅔)O³ System S.Y. Kim;E.S. Lee
  6. Large Electrostrictive Effects in Relaxor Ferroelectrics v.23 L.E. Cross;S.J. Jung;R.E. Newnham;S. Nomura;K. Uchino
  7. Am. Ceram. Soc. Bull. v.64 no.6 Optimization of Dielectric Properties of Lead Magnesium Niobate Ceramics M. Lejeune;J.P. Boilot
  8. Mater. Res. Bull. v.17 Fabrication of Perovskite Lead Magnesium Niobate S.L. Swartz;T.R. Shrout https://doi.org/10.1016/0025-5408(82)90159-3
  9. J. Am. Ceram. Soc. v.76 no.11 Sythesis of 0.4Pb(Mg⅓Nb⅔)O³-0.3Pb(Mg⅓Nb⅔)O³-0.3PbTiO³ Ceramics by Metal Alkoxide Method and Its Dielectric Properties A. Aruga;Y. Nakamura;T. Aoi;Y. Watanabe;S. Hirayama;S. Fujimoto https://doi.org/10.1111/j.1151-2916.1993.tb04045.x
  10. J. Ceram. Soc. Jpn. v.99 no.10 Synthesis of Ceramic Powders From Alkoxides G.L. Messing;W.T. Minehan https://doi.org/10.2109/jcersj.99.1036
  11. J. Ceram. Soc. Jpn. v.102 no.4 Chemical Structure of a Complex Alkoxide as a Precursor of Pb(Mg⅓Nb⅔)O³ T. Fukui;C. Sakurai;M. Okuyama https://doi.org/10.2109/jcersj.102.393
  12. J. Kor. Assoc. Crystal Growth v.11 no.1 0.9Pb(Mg⅓Nb⅔)O³-0.1PbTiO³ Powder Synthesis by Sol-Gel Process S.J. Yon;J.C. Lee
  13. Am. Ceram. Soc.;Ceramic Transactions;Ceramic Power Science v.1 Sol-Gel Processing of Lad Magnesium Niobate(PMN) Powder and Its Characterization P. Ravindranathan;S. Komarncni;A.S. Bhalla;R. Roy;L.E. Cross;G.L.Messing;E.R. Fuller Jr.;H. Hausner (ed.)