Dielectric ceramic, manufacturing method thereof and laminating ceramic capacitor
A technology of ceramic capacitors and manufacturing methods, applied in the direction of laminated capacitors, capacitors, fixed capacitors, etc., can solve the problems of harsh sound, discomfort, etc., and achieve the effect of reducing displacement
Active Publication Date: 2008-10-15
TAIYO YUDEN KK
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Abstract
This invention provides a dielectric ceramics capable of being reduced to be a shift of stridulation reason and a laminating ceramics capacitor capable of reducing the stridulation. Said dielectric ceramics is composed of a solid solution represented by Ba-Ti -Zr-Re-Me-O3 (Re is selected from at least one metal element ofLa, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu and Y, Me is selected from the metal element of Mg, Cr and Mn, Zr is random element) and SiO2, wherein Ti:Zr is 100:0 to 80:20; while the sum of Ti and Zr is 100mol, Ba is 97mol to 103mol, Re is 2mol to 18mol, Me is 2mol to 18mol and SiO2 is 0.5mol to 10mol.
Description
Dielectric ceramic, manufacturing method thereof, and laminated ceramic capacitor technical field The present invention relates to a dielectric ceramic, a method for producing the same, a multilayer capacitor using the dielectric ceramic, and a composition capable of reducing piezoelectricity. Background technique A laminated ceramic capacitor has a ceramic laminate composed of a multilayer dielectric ceramic layer and a plurality of internal electrodes formed by alternately drawing out the dielectric ceramic layer to different end faces, and on both end faces of the ceramic laminate External electrodes are formed on the top so that they are electrically connected to the internal electrodes. Since the dielectric ceramics used in the above-mentioned laminated ceramic capacitors are ferroelectrics, they have piezoelectricity. Therefore, when a voltage is applied, the multilayer ceramic capacitor 1' is displaced as shown in Fig. 2 . The direction of the displacement change...
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IPC IPC(8): H01B3/12C04B35/46C04B35/622H01G4/12H01G4/30
CPCH01G4/1227C01G25/006C01P2006/40C04B35/4682C04B35/49C04B35/62685C04B2235/3206C04B2235/3215C04B2235/3224C04B2235/3225C04B2235/3227C04B2235/3229C04B2235/3236C04B2235/3241C04B2235/3262C04B2235/3263C04B2235/3418C04B2235/652C04B2235/656C04B2235/6565C04B2235/6582C04B2235/6584C04B2235/768H01B3/12
Inventor 上田周作金田和巳池见慎一郎
Owner TAIYO YUDEN KK