A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PIEZOELECTRIC CERAMIC COMPOSITION AND METHOD FOR PRODUCING PIEZOELECTRIC CERAMIC COMPOSITION
PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic composition having good piezoelectric properties.SOLUTION: There is provided a piezoelectric ceramic composition represented by the following chemical formula: A[Pb(SrLa)(ZrTi)O]+(1-A)[Pb(MnNb)O], where the value A, the value x, the value y and the value z in the chemical formula satisfy the following expressions: 0.94<0.10, 0.45≤y<0.53 and 0≤z<1. Such a piezoelectric ceramic composition has a mechanical quality coefficient Qm of 1500 or more, a specific dielectric constant ε/εof 1300 or more, an electromechanical coupling factor Kp of 50% or more, an N constant Nr of 2200 Hz m or more and good piezoelectric properties.SELECTED DRAWING: None
【課題】圧電特性が良好であること。【解決手段】次化学式：Ａ［Ｐｂ１−ｘ（ＳｒｚＬａ１−ｚ）ｘ（Ｚｒ１−ｙＴｉｙ）Ｏ３］＋（１−Ａ）［Ｐｂ（Ｍｎ１／３Ｎｂ２／３）Ｏ３］により組成が示される圧電磁器組成物であり、化学式における値Ａと値ｘと値ｙと値ｚとは、次式：０．９４＜Ａ＜０．９８０．０２≦ｘ＜０．１００．４５≦ｙ＜０．５３０≦ｚ＜１を満たしている。このような圧電磁器組成物は、機械的品質係数Ｑｍが１５００以上であり、かつ、比誘電率ε３３Ｔ／ε０が１３００以上であり、かつ、電気機械結合係数Ｋｐが５０％以上であり、かつ、Ｎ定数Ｎｒが２２００Ｈｚ・ｍ以上であり、圧電特性が良好である。【選択図】なし
PIEZOELECTRIC CERAMIC COMPOSITION AND METHOD FOR PRODUCING PIEZOELECTRIC CERAMIC COMPOSITION
PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic composition having good piezoelectric properties.SOLUTION: There is provided a piezoelectric ceramic composition represented by the following chemical formula: A[Pb(SrLa)(ZrTi)O]+(1-A)[Pb(MnNb)O], where the value A, the value x, the value y and the value z in the chemical formula satisfy the following expressions: 0.94<0.10, 0.45≤y<0.53 and 0≤z<1. Such a piezoelectric ceramic composition has a mechanical quality coefficient Qm of 1500 or more, a specific dielectric constant ε/εof 1300 or more, an electromechanical coupling factor Kp of 50% or more, an N constant Nr of 2200 Hz m or more and good piezoelectric properties.SELECTED DRAWING: None
【課題】圧電特性が良好であること。【解決手段】次化学式：Ａ［Ｐｂ１−ｘ（ＳｒｚＬａ１−ｚ）ｘ（Ｚｒ１−ｙＴｉｙ）Ｏ３］＋（１−Ａ）［Ｐｂ（Ｍｎ１／３Ｎｂ２／３）Ｏ３］により組成が示される圧電磁器組成物であり、化学式における値Ａと値ｘと値ｙと値ｚとは、次式：０．９４＜Ａ＜０．９８０．０２≦ｘ＜０．１００．４５≦ｙ＜０．５３０≦ｚ＜１を満たしている。このような圧電磁器組成物は、機械的品質係数Ｑｍが１５００以上であり、かつ、比誘電率ε３３Ｔ／ε０が１３００以上であり、かつ、電気機械結合係数Ｋｐが５０％以上であり、かつ、Ｎ定数Ｎｒが２２００Ｈｚ・ｍ以上であり、圧電特性が良好である。【選択図】なし
PIEZOELECTRIC CERAMIC COMPOSITION AND METHOD FOR PRODUCING PIEZOELECTRIC CERAMIC COMPOSITION
圧電磁器組成物および圧電磁器組成物製造方法
MITANI AKIHIRO (author) / KOBAYASHI RYOSUKE (author) / OBA YOSHINARI (author) / YAHATA NOBUTAKA (author)
2017-09-21
Patent
Electronic Resource
Japanese
PIEZOELECTRIC CERAMIC COMPOSITION AND METHOD OF PRODUCING PIEZOELECTRIC CERAMIC COMPOSITION
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PIEZOELECTRIC CERAMIC COMPOSITION, AND METHOD OF PRODUCING PIEZOELECTRIC CERAMIC COMPOSITION
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PIEZOELECTRIC CERAMIC COMPOSITION AND METHOD OF PRODUCING PIEZOELECTRIC CERAMIC
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| European Patent Office | 2016