Title:
DIELECTRIC COMPOSITION, DIELECTRIC ELEMENT, ELECTRONIC COMPONENT AND LAMINATE ELECTRONIC COMPONENT
Document Type and Number:
WIPO Patent Application WO/2017/163843
Kind Code:
A1
Abstract:
[Problem] To provide a dielectric composition with high voltage resistance and good reliability, and an electronic component using said dielectric composition. [Solution] This dielectric composition is characterized in that the main component is a tungsten bronze type composite oxide represented by the chemical formula (Sr1.00-s-tBasCat)6.00-xRx(Ti1.00-aZra)x+2.00(Nb1.00-bTab)8.00-xO30.00; R is at least one element selected from Y, La, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu; s, t, x, a and b satisfy 0.50 ≦ s ≦ 1.00, 0 ≦ t ≦ 0.50, 0.50 ≦ s+t ≦ 1.00, 0.50 < x ≦ 1.50, 0.30 ≦ a ≦ 1.00 and 0 ≦ b ≦ 1.00; and the composition contains 0.10-20.00 mols of at least one element selected from Mn, Mg, Co, V, W, Mo, Si, Li, B and Al as a secondary component per 100 mols of the main component.
Inventors:
AMAN SANSHIRO (JP)
AKIBA HIROKI (JP)
TAKEUCHI KEIKO (JP)
AKIBA HIROKI (JP)
TAKEUCHI KEIKO (JP)
Application Number:
PCT/JP2017/008803
Publication Date:
September 28, 2017
Filing Date:
March 06, 2017
Export Citation:
Assignee:
TDK CORP (JP)
International Classes:
C04B35/01; H01B3/12; H01G4/12; H01G4/30
Foreign References:
| JPH03274607A | 1991-12-05 |
Other References:
A PANIGRAHI: "Structural and electrical properties of Ba5RTi2ZrNb7030 [R=La, Nd, Sm, Eu", GD, DY] CERAMIC SYSTEM, INDIAN JOURNAL OF PHYSICS, vol. 74A, no. 2, 2000, pages 147 - 149, XP009512753
N.K. SINGH: "Electrical Conductivity in Ba5RTi3-xZrxNb7030 [R=La or Dy] Ceramics", ASIAN JOURNAL OF CHEMISTRY, vol. 15, no. 1, January 2003 (2003-01-01), pages 388 - 394, XP009513921
Y.H. SUN ET AL.: "Effects of Ca and Zr substitution upon structure and properties of Ba5LaTi3Ta7030 low-loss dielectric ceramics", MATERIALS RESEARCH BULLETIN, vol. 39, 2004, pages 1247 - 1255, XP004515159, DOI: doi:10.1016/j.materresbull.2004.04.008
N.K. SINGH ET AL.: "Ferroelectric phase transition in Ba5LaTi3-xZrxNb7O30 [x=0, 1, 2 , 3] ceramics", MATERIALS LETTERS, vol. 5 7, November 2002 (2002-11-01), pages 36 - 42, XP004392408, DOI: doi:10.1016/S0167-577X(02)00695-X
N.K. SINGH ET AL.: "Diffuse phase transition in Ba5YTi3-xZrxNb7030 ferroelectrics", MATERIALS CHEMISTRY AND PHYSICS, vol. 74, 2002, pages 113 - 120, XP055578322
See also references of EP 3434658A4
N.K. SINGH: "Electrical Conductivity in Ba5RTi3-xZrxNb7030 [R=La or Dy] Ceramics", ASIAN JOURNAL OF CHEMISTRY, vol. 15, no. 1, January 2003 (2003-01-01), pages 388 - 394, XP009513921
Y.H. SUN ET AL.: "Effects of Ca and Zr substitution upon structure and properties of Ba5LaTi3Ta7030 low-loss dielectric ceramics", MATERIALS RESEARCH BULLETIN, vol. 39, 2004, pages 1247 - 1255, XP004515159, DOI: doi:10.1016/j.materresbull.2004.04.008
N.K. SINGH ET AL.: "Ferroelectric phase transition in Ba5LaTi3-xZrxNb7O30 [x=0, 1, 2 , 3] ceramics", MATERIALS LETTERS, vol. 5 7, November 2002 (2002-11-01), pages 36 - 42, XP004392408, DOI: doi:10.1016/S0167-577X(02)00695-X
N.K. SINGH ET AL.: "Diffuse phase transition in Ba5YTi3-xZrxNb7030 ferroelectrics", MATERIALS CHEMISTRY AND PHYSICS, vol. 74, 2002, pages 113 - 120, XP055578322
See also references of EP 3434658A4
Attorney, Agent or Firm:
MAEDA & SUZUKI (JP)
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