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C ‐Axis Orientation of KSr 2 Nb 5 O 15 Using a Rotating Magnetic Field
Author(s) -
Tanaka Satoshi,
Makiya Atsushi,
Okada Takeshi,
Kawase Tomoko,
Kato Zenji,
Uematsu Keizo
Publication year - 2007
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.1551-2916.2007.01978.x
Subject(s) - materials science , magnetic field , perpendicular , sintering , rotation (mathematics) , orientation (vector space) , diffraction , rotating magnetic field , field (mathematics) , condensed matter physics , composite material , geometry , optics , physics , mathematics , quantum mechanics , pure mathematics
We fabricated c ‐axis‐oriented KSr 2 Nb 5 O 15 (KSN) ceramics using a rotating strong magnetic field with subsequent sintering. The degree of orientation of the green compact was about 0.1 for (00 l ), as evaluated from the Lotgering factor in X‐ray diffraction. The orientation of the structure was enhanced by sintering at 1673 K; the Lotgering factor of the sintered body increased to 0.8. Microstructural examination indicated a well‐oriented structure in which the longitudinal axes of the rectangular‐shaped grains were oriented perpendicular to the axis of rotation of the magnetic field. KSN oriented on the a, b axes could be similarly fabricated using a strong static magnetic field.