Ba(Zn_<1/3>Ta_<2/3>)O_3のマイクロ波帯のQ値へ及ぼす超格子オーダリングと微細組織の影響

概要

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Effects of superlattice ordering and ceramic micro structure on the microwave dielectric properties of complex perovskite-type oxide Ba(Zn_<1/3>Ta_<2/3>)O_3 polycrystalline ceramics are studied. The superlattice ordering ratio was controlled by the sintering time at 1350℃. The superlattice ordering of Zn and Ta ions on B sites increased with increasing sintering time until 80 h and reached a saturated value of 80%. However, the microwave Q factor of the samples showed a large variation of the same magnitude of the superlattice ordering ratio. This result suggests that the microwave Q factor of Ba(Zn_<1/3>Ta_<2/3>)O_3 ceramics depends not only on the superlattice ordering but also on the ceramic microstructure.
社団法人日本セラミックス協会の論文
2003-10-01