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Home  >  Journal list  >  Journal of the Ceramic Society of Japan  >  Vol.122  No.1421 (January) (2014)  >  pp.25-28

Journal of the Ceramic Society of Japan
<<Previous article Vol.122  No.1421 (January) (2014)   pp.25 - 28 Next article>>

Correlation between a dielectric anomaly and a phase transition of sintered phosphorus doped WO3 ceramics

Atsushi NOSE1), Hidetoshi MIYAZAKI1), Yukikuni AKISHIGE2), Shinya TUKADA2), Hisao SUZUKI3), Nobuyasu ADACHI4), Toshitaka OTA4)
1) Interdisciplinary Faculty of Science and Engineering, Shimane University 2) Faculty of Education, Shimane University 3) Graduate Schoolof Science and Technology, Shizuoka University 4) Ceramic Research Laboratory, Nagoya Institute of Technology

Phosphorus doped WO3 (PxW1−xO3) ceramics were fabricated by a solid state reaction. Temperature and frequency dependence of dielectric properties for the PxW1−xO3 (x = 0–0.15) ceramics were evaluated at the temperature between −20 to 80°C. The dielectric constant of the P0.05W0.95O3 ceramic was 3600–5800 at the frequency range from 1 kHz to 1 MHz in the room temperature, and the dielectric loss of the P0.05W0.95O3 ceramic were less than 0.1 at the frequency of higher than 160 kHz. The dielectric anomaly peak of the WO3 ceramic has been observed at 20°C, and the dielectric anomaly peak of the P0.05W0.95O3 ceramic has been observed at about 0°C. The interaction between temperature dependence of dielectric properties (dielectric anomaly) ceramics and structural change of the WO3 and P0.05W0.95O3 were evaluated by Raman spectra.


Keyword:
Tungsten trioxde, Dielectric property, Temperature dependence, Frequency dependence, Raman spectra

Received: August 22, 2013
Accepted: October 11, 2013 , Published online: January 01, 2014
Copyright © 2014 The Ceramic Society of Japan

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