2014 Fiscal Year Final Research Report
Ceramic Processing of Oxynitride Perovskite Dielectrics
Project/Area Number |
24245039
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Research Category |
Grant-in-Aid for Scientific Research (A)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Inorganic industrial materials
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Research Institution | Hokkaido University |
Principal Investigator |
KIKKAWA Shinichi 北海道大学, 工学(系)研究科(研究院), 教授 (10127219)
|
Co-Investigator(Kenkyū-buntansha) |
MOTOHASHI Teruki 北海道大学, 大学院工学研究院, 准教授 (00323840)
MASUBUCHI Yuji 北海道大学, 大学院工学研究院, 助教 (80466440)
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Project Period (FY) |
2012-04-01 – 2015-03-31
|
Keywords | 酸窒化物 / セラミックス / 誘電性 / 結晶構造解析 / ペロブスカイト / 焼結 / 雰囲気アニール |
Outline of Final Research Achievements |
Neutron diffraction revealed that both SrTaO2N and LaTiO2N oxynitride perovskites have cis-configuration in O4N2 octahedra around B site cation. This coordination leads to local polarity induced dielectric property in these oxynitrides. About 30% of nitrogen is released from them above about 950℃ and 800℃, respectively. Sintering aid such as SrCN2 is effectrive to prepare dielectric ceramics of these oxynitrides to compencating both Sr and N together.
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Free Research Field |
無機材料化学
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