IP Library Granted Patent US 9,455,087
Granted Patent B2
US 9,455,087 · App. 14/833,614 · Granted Sep 27, 2016

Dielectric film and dielectric element

Inventors: Saori Takeda (Tokyo, JP); Masahito Furukawa (Tokyo, JP); Masanori Kosuda (Tokyo, JP); Yuji Sezai (Tokyo, JP)
Assignee: TDK CORPORATION
H01G4/10H01G4/1227H01G4/20H01G4/33
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Quick Facts
Patent No.
US 9,455,087
App. No.
14/833,614
Granted
Sep 27, 2016
Kind
B2
Abstract

A dielectric film contains as a main component a dielectric composition represented by the general formula (Ba 1-x Ca x ) z (Ti 1-y Zr y )O 3 wherein 0.001≦x≦0.400, 0.001≦y≦0.400, and 0.900≦z<0.995. In an X-ray diffraction pattern of the dielectric composition, the dielectric composition has the relation 0.00°≦2θ c −2θ t <0.20° between (001) plane diffraction peak position 2θ t of a tetragonal structure represented by the general formula and (100) plane diffraction peak position 2θ c of a cubic structure represented by the general formula.

Claims (18)

1. A dielectric film comprising:

a dielectric composition as a main component, the dielectric composition being represented by the general formula (Ba 1-x Ca x ) z (Ti 1-y Zr y )O 3 wherein 0.001≦x≦0.400, 0.001≦y≦0.400, and 0.900≦z<0.995, and

sub-components V 2 O 5 and at least one or more of MnO and CuO;

wherein in an X-ray diffraction pattern of the dielectric composition, the dielectric composition has the relation 0.00°≦2θ c -2θ t <0.20° between (001) plane diffraction peak position 2θ t of a tetragonal structure represented by the general formula and (100) plane diffraction peak position 2θ c of a cubic structure represented by the general formula.

2. The dielectric film according to claim 1 , wherein x and y of the general formula are within the ranges of 0.001≦x≦0.100 and 0.001≦y≦0.100, respectively.

3. The dielectric film according to claim 1 , wherein a total content of MnO and CuO as the sub-components is 0.010 mol to 1.000 mol relative to 100 mol of the main component in the dielectric film, and a content of V 2 O 5 is 0.050 mol to 1.000 mol.

4. A dielectric element comprising:

the dielectric film according to claim 1 ; and

an electrode.

5. The dielectric film according to claim 2 , wherein a total content of MnO and CuO as the sub-components is 0.010 mol to 1.000 mol relative to 100 mol of the main component in the dielectric film, and a content of V 2 O 5 is 0.050 mol to 1.000 mol.

6. A dielectric element comprising:

the dielectric film according to claim 2 ; and an electrode.

7. A dielectric element comprising:

the dielectric film according to claim 3 ; and

an electrode.

8. A dielectric element comprising:

the dielectric film according to claim 5 ; and

an electrode.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 24, 2015
From: TAKEDA, SAORI; FURUKAWA, MASAHITO; KOSUDA, MASANORI; SEZAI, YUJI
To: TDK CORPORATION
Reel/Frame 036402/0730 →
Priority Claims (2)
JP 2014-186458 · Sep 12, 2014 · national
JP 2015-120079 · Jun 15, 2015 · national
Continuity (1)
Related Publication 20160079002A1 · Mar 17, 2016