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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.118  No.1380 (August) (2010)  >  pp.722-725

Journal of the Ceramic Society of Japan
<<Previous article Vol.118  No.1380 (August) (2010)   pp.722 - 725 Next article>>

Fabrication of c-axis-oriented potassium strontium niobate (KSr2Nb5O15) ceramics by a rotating magnetic field and electrical property

Satoshi TANAKA1), Takuma TAKAHASHI1), Ryoichi FURUSHIMA1), Atsushi MAKIYA1) and Keizo UEMATSU1)
1) Department of Materials Science and Technology, Nagaoka University of Technology

  Fabrication and property of c-axis-oriented KSr2Nb5O15 (KSN) ceramics were examined. Particle-oriented KSN was fabricated by using a rotating magnetic field and subsequent sintering. KSN fine powder was prepared by conventional solid-state reaction and grinding processing. C-axis-oriented KSN green compact was fabricated in a rotating magnetic field 10 Tesla. The resulting green body was sintered at 1473 K for 6 h and then at 1525 K for 2 h to prevent exaggerated grain growth. C-axis-oriented KSN ceramics with relative density 92% was obtained. In XRD, peaks from the c-planes, such as 001 and 002, were very strong at the horizontal cross section of the sintered specimens. The ferroelectric and piezoelectric property along to c-axis was also improved to 21 µC/cm2 and d33 = 101 pC/N by orientation structure.


Keyword:
Piezoelectric material, Orientation, Magnetic field, KSr2Nb5O15

Received: April 20, 2010
Accepted: July 15, 2010 , Published online: August 01, 2010
Copyright (c) 2010 The Ceramic Society of Japan

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