Preparation of lead magnesium niobate by a coprecipitation method |
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| Authors: | A Watanabe H Haneda Y Moriyoshi S Shirasaki S Kuramoto H Yamamura |
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| Affiliation: | (1) National Institute for Research in Inorganic Materials, 1-1 Namiki, Tsukuba-shi, 305 Ibaraki, Japan;(2) Nihonshokubaikagaku Co., Nishiotabi-cho, Suita-shi, Osaka, Japan;(3) TOSOH Co., Hayakawa, Ayase-shi, Kanagawa, Japan |
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| Abstract: | The ferroelectric complex perovskite lead magnesium niobate, Pb(Mg1/3Nb2/3)O3 (PMN), was prepared by a coprecipitation method. As the niobium component, niobium oxalate was used. Among the various precipitants, tetramethylammonium hydroxide was effective for the formation of single-phase PMN without pyrochlore phase. The dielectric constant and the dissipation factor of PMN changed either the sintering temperature or the grain size. The maximum dielectric constant at the Curie point was obtained by sintering at 1220 °C in air for 2 h. |
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