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    • 31. 发明公开
    • Dielectric ceramic composition
    • Dielelektrische keramische Zusammensetzung
    • EP0798277A1
    • 1997-10-01
    • EP97103992.0
    • 1997-03-10
    • MURATA MANUFACTURING CO., LTD.
    • Matoba, Hiroaki
    • C04B35/499H01G4/12
    • H01G4/1218C04B35/499H01B3/12H01G4/1209H01G4/1227
    • Dislcosed herein is a dielectric ceramic composition based on a lead-based perovskite-type complex compound containing nickel, characterized in that the amount of nickel is smaller than the stoichiometric amount.
      A dielectric ceramic composition which contains α mol% (0

              Pb[Ni (1-x)/3 B +5 2/3 ] a [Ni (1-y)/2 B +6 1/2 ] (1-a) O 3

      (where B +5 denotes at least one element selected from elements having a valance of +5, B +6 denotes at least one element selected from elements having a valance of +6, 0
      with the amount of nickel being γ mol% (0
      (where γ = α x (a x χ x 1/3 + (1 - a) x y x 1/2) ).
      The dielectric ceramic composition which has a high dielectric constant and yet has nearly constant capacity-temperature characteristics.
    • 本发明是一种基于含有镍的铅基钙钛矿型络合物的电介质陶瓷组合物,其特征在于镍的量小于化学计量量。 1.一种电介质陶瓷组合物,其含有以下式(1)所示的铅系钙钛矿型络合物的α摩尔%(0≤α≤100)PbAlNi(1-x)/ 3B + / 2B <+6> 1 /2Ü(1-a)O3(其中B <+5>表示选自价值为+5的元素中的至少一种元素,B +6表示选自元素中的至少一种元素 具有+6,0
    • 33. 发明公开
    • Pyrochlore based oxides with high dielectric constant and low temperature coefficient
    • Au f e e e e e e e e e e e e e e e e e e e e e e e e e e e e e e
    • EP0767153A1
    • 1997-04-09
    • EP96306966.1
    • 1996-09-25
    • AT&T IPM Corp.
    • Cava, Robert JosephPeck, William FrederickKrajewski, James Joseph
    • C04B35/499
    • C04B35/499
    • The temperature dependent dielectric constants in the vicinity of room temperature have been measured for bulk ceramics which are phase-mixtures of Pb 2 (Nb,Mg,Ti) 2 O 6+x Pyrochlores and Pb(Nb,Mg,Ti)O 3 , Perovskites. A band of compositions has been found in which the negative temperature coefficient of dielectric constant for the pyrochlore is very closely compensated by the positive temperature coefficient of dielectric constant of the Perovskite. These compositions have dielectric constants near 200, with Q's near 200 at 1 MHz, making them an intermediate family of dielectrics between the much studied high dielectric constant low Q Barium-Strontium Titanates and low dielectric constant high Q Barium-Lanthanide Titanates.
    • 对于Pb2(Nb,Mg,Ti)2O6 + x Pyrochlores和Pb(Nb,Mg,Ti)O3,钙钛矿的相混合物的体积陶瓷,已经测量了室温附近的温度依赖介电常数。 已经发现了一组组合物,其中烧绿石的介电常数的负温度系数通过钙钛矿的介电常数的正温度系数非常接近地补偿。 这些组合物具有接近200的介电常数,Q在1MHz附近的Q值接近200,这使得它们是经过广泛研究的高介电常数低Q钡 - 锶钛酸钡和低介电常数高Q钡 - 镧系元素钛酸盐之间的介电常数。