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Fabrication and Analysis of the Oriented LiCoO 2 by Slip Casting in a Strong Magnetic Field
Author(s) -
Yamada Hideto,
Suzuki Tohru S.,
Uchikoshi Tetsuo,
Hozumi Masato,
Kohama Keiichi,
Sakka Yoshio
Publication year - 2012
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1551-2916.2012.05404.x
Subject(s) - materials science , shrinkage , dilatometer , anisotropy , magnetic field , fabrication , composite material , slip (aerodynamics) , condensed matter physics , optics , thermal expansion , thermodynamics , physics , alternative medicine , pathology , quantum mechanics , medicine
We attempted to fabricate the oriented bulk LiCoO 2 using slip casting in a strong magnetic field. The shrinkage of the oriented green compact was measured using a dilatometer. It was confirmed that the oriented green compact undergoes anisotropic shrinkage. The shrinkage in the c‐ plane direction of the oriented LiCoO 2 was greater than that in the c ‐axis direction. The degree of orientation in the bulk LiCoO 2 was analyzed using XRD and electron backscatter diffraction; the c ‐axis of LiCoO 2 was oriented parallel to the magnetic field. Moreover, the orientation parameter, r , was 0.234, indicating that 92% of the grains was aligned with a tilt angle less than 10° between the c ‐axis and the magnetic field direction. The texturing led LiCoO 2 to anisotropy in the electric conductivity between the c ‐plane and c ‐axis directions. It was concluded that the magneto‐scientific technique is a powerful method to fabricate highly oriented bulk LiCoO 2 .