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    • 9. 发明申请
    • DIELECTRIC COMPOSITION, DIELECTRIC ELEMENT, ELECTRONIC COMPONENT AND LAMINATED ELECTRONIC COMPONENT
    • 电介质组合物,电介质元件,电子元件和层压电子元件
    • WO2017012798A1
    • 2017-01-26
    • PCT/EP2016/063899
    • 2016-06-16
    • EPCOS AG
    • HIROSE, MasakazuIMURA, TomoyaTAUCHI, GoushiTERADA, Tomohiro
    • H01B3/12H01G4/12H01G4/30
    • H01B3/12H01G4/12H01G4/1218H01G4/1227H01G4/30
    • The problem addressed lies in providing a dielectric composition which has a good dielectric constant when a DC bias is applied and good DC bias characteristics, and which also has a good high- temperature load lifespan and good mechanical strength; and also in providing a dielectric element comprising said dielectric composition, an electronic component and a laminated electronic component. A dielectric composition comprising particles having a perovskite crystal structure including at least Bi, Na, Sr and Ti. Said dielectric composition includes between 0.5 molar parts and 11.1 molar parts of at least one selected from among La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Yb, Ba, Ca, Mg and Zn, taking Ti as 100 molar parts. 0.17 ≤ α ≤ 2.83, where α is the molar ratio of Bi with respect to Sr. At least some of the particles include a high-Bi phase having a Bi concentration of at least 1.2 times the mean Bi concentration of the dielectric composition as a whole. The total surface area of the high-Bi phase within the particles is between 0.1% and 15% of the total surface area of the particles.
    • 所提出的问题在于提供一种介电组合物,其在施加直流偏压时具有良好的介电常数,并具有良好的直流偏压特性,并且还具有良好的高温负载寿命和良好的机械强度; 并且还提供包括所述电介质组合物,电子部件和层压电子部件的电介质元件。 一种电介质组合物,其包含具有至少包含Bi,Na,Sr和Ti的钙钛矿晶体结构的颗粒。 所述电介质组合物包含0.5摩尔份和11.1摩尔份的选自La,Ce,Pr,Nd,Sm,Eu,Gd,Tb,Dy,Ho,Yb,Ba,Ca,Mg和Zn中的至少一种, Ti为100摩尔份。 0.17≤α≤2.83,其中α是Bi相对于Sr的摩尔比。至少一些颗粒包括Bi浓度为介电组合物的平均Bi浓度的至少1.2倍的高Bi相,作为 整个。 颗粒内高Bi相的总表面积为颗粒总表面积的0.1%至15%。