Phosphorus solid solution effects of electric and dielectric properties on sintered WO₃ ceramics

抄録

Phosphorus solid-soluted WO₃ ceramics (P_xW_1−xO₃) were fabricated by a solid state reaction at 1000°C for 100 h with the phosphorus concentration x of 0 to 0.3. Phosphorus-doped single-phase monoclinic WO₃ ceramics were fabricated with phosphorus concentration between 0 and 0.3. Sintered WO₃ pellets that were P-doped with phosphorus concentrations of 0–0.3 were synthesized at 1000°C in 24 h in order to evaluate electric and dielectric properties. The resistivity of specimens decreased concomitantly with increasing the stoichiometry x in P_xW_1−xO₃ from 0 to 0.15, and that increased with increasing phosphorus concentration larger than 0.15. The dielectric constants of the specimens decreased with increase of phosphorus concentration, and the dielectric constant of the P_0.05W_0.95O₃ and P_0.10W_0.90O₃ were 2100 and 1400 at 100 kHz at room temperature, respectively.