Microscale Mapping of Structure and Stress in Barium Titanate.

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  • Author(s): Howell JA;Howell JA; Vaudin MD; Vaudin MD; Friedman LH; Friedman LH; Cook RF; Cook RF
  • Source:
    Journal of research of the National Institute of Standards and Technology [J Res Natl Inst Stand Technol] 2020 Apr 04; Vol. 125, pp. 125013. Date of Electronic Publication: 2020 Apr 04 (Print Publication: 2020).
  • Publication Type:
    Journal Article
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: U.S. Dept. of Commerce, National Institute of Standards and Technology Country of Publication: United States NLM ID: 8912688 Publication Model: eCollection Cited Medium: Print ISSN: 1044-677X (Print) Linking ISSN: 1044677X NLM ISO Abbreviation: J Res Natl Inst Stand Technol Subsets: PubMed not MEDLINE
    • Publication Information:
      Original Publication: [Gaithersburg, MD] : [Washington : U.S. Dept. of Commerce, National Institute of Standards and Technology ; U.S. G.P.O., distributor, 1988-
    • Abstract:
      Cross-correlation of electron backscatter diffraction (EBSD) patterns was used to generate rotation, strain, and stress maps of single-crystal tetragonal barium titanate (BaTiO 3 ) containing isolated, small, sub-micrometer a domains separated from a c -domain matrix by 90° domain boundaries. Spatial resolution of about 30 nm was demonstrated over 5 μm maps, with rotation and strain resolutions of approximately 10 -4 . The magnitudes of surface strains and, especially, rotations peaked within and adjacent to isolated domains at values of approximately 10 -2 , i.e. , the tetragonal distortion of BaTiO 3 . The conjugate stresses between a domains peaked at about 1 GPa, and principal stress analysis suggested that stable microcrack formation in the c domain was possible. The results clearly demonstrate the applicability of EBSD to advanced multilayer ceramic capacitor reliability and strongly support the coupling between the electrical performance and underlying mechanical state of BaTiO 3 -containing devices.
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    • Contributed Indexing:
      Keywords: barium titanate (BaTiO3); domain; electron backscatter diffraction; microdomain; single crystal; strain, stress
    • Publication Date:
      Date Created: 20220425 Latest Revision: 20220716
    • Publication Date:
      20240513
    • Accession Number:
      PMC9017968
    • Accession Number:
      10.6028/jres.125.013
    • Accession Number:
      35465393