Bulletin of the Korean Chemical Society

  • 제33권7호
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  • Pages.2305-2308
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  • 2012
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  • 0253-2964(pISSN)
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  • 1229-5949(eISSN)
대한화학회 (Korean Chemical Society)
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Synthesis of High-Aspect-Ratio BaTiO3 Platelets by Topochemical Conversion and Fabrication of Textured Pb(Mg1/3Nb2/3)O3-32.5PbTiO3 Ceramics

  • Zhao, Wei (Tianjin Institute of Urban Construction, Department of Materials science & Engineering) ;
  • E, Lei (Tianjin Institute of Urban Construction, Department of Materials science & Engineering) ;
  • Ya, Jing (Tianjin Institute of Urban Construction, Department of Materials science & Engineering) ;
  • Liu, Zhifeng (Tianjin Institute of Urban Construction, Department of Materials science & Engineering) ;
  • Zhou, Heping (State Key Laboratory of New Ceramic and Fine Processing, Tsinghua University)
  • 투고 : 2012.02.18
  • 심사 : 2012.04.16
  • 발행 : 2012.07.20
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초록

Perovskite structured barium titanate particles ($BaTiO_3$) platelets were synthesized by molten salt synthesis and topochemical microcrystal conversion. As the precursors of $BaTiO_3$, plate-like $BaBi_4Ti_4O_{15}$ particles were first synthesized by the reaction of $Bi_4Ti_3O_{12}$, $BaCO_3$, and $TiO_2$ at $1080^{\circ}C$ for 3 h in $BaCl_2$-KCl molten salt. After the topochemical reactions, layer-structured $BaBi_4Ti_4O_{15}$ particles transformed to the perovskite $BaTiO_3$ platelets. $BaTiO_3$ particles with thickness of approximately $0.5{\mu}m$ and a length of $10-15{\mu}m$ retained the morphology feature of the $BaBi_4Ti_4O_{15}$ precursor. For <001> $Pb(Mg_{1/3}Nb_{2/3})O_3-32.5PbTiO_3$ (PMNT)-5 wt % PbO piezoelectric ceramics textured with 5 vol % of $BaTiO_3$ templates, the Lotgering factor reached 0.82, and $d_{33}$ was 870 pC/N.

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참고문헌

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피인용 문헌

  1. Predicting the Coupling Properties of Axially-Textured Materials vol.6, pp.11, 2013, https://doi.org/10.3390/ma6114967
  2. Tunable band gap of iron-doped lanthanum-modified bismuth titanate synthesized by using the thermal decomposition of a secondary phase vol.66, pp.9, 2015, https://doi.org/10.3938/jkps.66.1371
  3. Polycrystal piezoelectricity: revisiting the Voigt-Reuss-Hill approximation vol.6, pp.11, 2012, https://doi.org/10.1088/2053-1591/ab46f2