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


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
Number of pages4
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
ISSN (Print)1022-6680


Other2013 3rd International Conference on Chemical, Metallurgical Engineering, ICCMME 2013


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

ASJC Scopus subject areas

  • General Engineering


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