铌镁酸铅的形成及电性能-猫眼课题宝

铌镁酸铅的形成及电性能

批准号：

04680058

负责人：

HIROTA Ken

金额：

$1.09万

依托单位：

Doshisha University

依托单位国家：

日本

项目类别：

Grant-in-Aid for General Scientific Research (C)

财政年份：

1992

资助国家：

日本

项目状态：

已结题

起止时间：

1992 至 1993

来源：

https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04680058/

关键词：

Alkoxide Perovskite Magnesium Niobium Lead Oxide ニオブ

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英文摘要

As the 1st step of synthesis for lead magnesium niobate, formation of magnesium niobate as a precursor was investigated. A new modification of MgNb_2O_6 was crystallized at 510ﾟ - 550ﾟC from amorphous material prepared by the simultaneous hydrolysis of magnesium ethoxide and niobium ethoxide.To obtain high dielectric constant at room temperature, the ceramics with the composition of 0.9Pb(Mg_<1/3>Nb_<2/3>)O_3-0.1PbTiO_3 was fabricated using powders prepared by the alkoxy-method. The ceramics sintered at 1250ﾟC with the densities >98 % T.D.consisted of grains of 1 - 6mum in size. The dielectric constant of the ceramics showed the values between 7000 and 2500 at 1 kHz.

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