A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
ELECTRET
To provide an electret that has excellent thermal stability, can control the amount of crystal defects, and has stable characteristics in an usage environment.SOLUTION: An electret 1 is formed by polarization treatment of a composite oxide having an ABO3 type perovskite structure containing two different metal elements A and B. In the composite oxide, at least one of the metal elements A and B is partially replaced with a dopant element having a lower valence than the metal elements A and B, and the bandgap energy is 4. eV or higher.SELECTED DRAWING: Figure 1
【課題】熱的安定性に優れ、結晶欠陥量の制御が可能であり、使用環境で安定した特性を有するエレクトレットを提供する。【解決手段】エレクトレット１は、異なる２種の金属元素Ａ、Ｂを含むＡＢＯ3型のペロブスカイト構造を有する複合酸化物を分極処理してなる。複合酸化物は、金属元素Ａ、Ｂのうちの少なくとも１つについて、その一部が、金属元素Ａ、Ｂよりも低価数のドーパント元素にて置換されており、かつ、バンドギャップエネルギが４ｅＶ以上である。【選択図】図１
ELECTRET
To provide an electret that has excellent thermal stability, can control the amount of crystal defects, and has stable characteristics in an usage environment.SOLUTION: An electret 1 is formed by polarization treatment of a composite oxide having an ABO3 type perovskite structure containing two different metal elements A and B. In the composite oxide, at least one of the metal elements A and B is partially replaced with a dopant element having a lower valence than the metal elements A and B, and the bandgap energy is 4. eV or higher.SELECTED DRAWING: Figure 1
【課題】熱的安定性に優れ、結晶欠陥量の制御が可能であり、使用環境で安定した特性を有するエレクトレットを提供する。【解決手段】エレクトレット１は、異なる２種の金属元素Ａ、Ｂを含むＡＢＯ3型のペロブスカイト構造を有する複合酸化物を分極処理してなる。複合酸化物は、金属元素Ａ、Ｂのうちの少なくとも１つについて、その一部が、金属元素Ａ、Ｂよりも低価数のドーパント元素にて置換されており、かつ、バンドギャップエネルギが４ｅＶ以上である。【選択図】図１
ELECTRET
エレクトレット
KOZAWA YOSHIHIRO (author) / MATSUSHITA NORIYUKI (author) / KANO KAZUHIKO (author) / TANAKA YUMI (author) / MARUYAMA TOMOYA (author) / OKAMOTO YUJI (author) / MORIOKA NAOYA (author) / SAIKI KATSUYOSHI (author)
2021-06-24
Patent
Electronic Resource
Japanese
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