Characterization and synthesis of additivecoated BaTiO3 Nano-powder

Jung Min Lee, Myoung Pyo Chun, Hyo Soon Shin, Byung Ik Kim, Jong Heun Lee

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Two different BaTiO3 (160nm) nano-powders coated with Y and with Dy were fabricated by an aqueous chemical coating method, and their dielectric properties and microstructures were investigated with X-ray diffraction, Impedance analyzer, SEMand TEM. Y and Dy were coated on the BaTiO3 powder using nitrates. Coated BaTiO3 powderswere pressed in a disk shapeand sintered at 1150~1200°C for 2 hoursin reduced atmosphere of 10%H2- 90%N2. Coating layer of the BaTiO3 particle was thin with a thickness of 3~5nm. Coated BaTiO3sintered sample exhibited alarger lattice parameter (a, c) and smaller tetragonality (c/a)than pure BaTiO3one. Y coated BaTiO3sample sintered at 1200°C showed good dielectric propertieswith ahigh dielectric constant of around 2000 and a stabletemperature coefficient of capacitance (TCC).

    Original languageEnglish
    Title of host publicationChemical, Material and Metallurgical Engineering III
    Pages964-967
    Number of pages4
    DOIs
    Publication statusPublished - 2014
    Event2013 3rd International Conference on Chemical, Metallurgical Engineering, ICCMME 2013 - Zhuhai, China
    Duration: 2013 Dec 102013 Dec 11

    Publication series

    NameAdvanced Materials Research
    Volume881-883
    ISSN (Print)1022-6680

    Other

    Other2013 3rd International Conference on Chemical, Metallurgical Engineering, ICCMME 2013
    Country/TerritoryChina
    CityZhuhai
    Period13/12/1013/12/11

    Keywords

    • Additive coating
    • BaTiO
    • Core-shell
    • MLCC
    • Nano-powder
    • Rare earth ion

    ASJC Scopus subject areas

    • General Engineering

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