JP2003221273A - Dielectric ceramic composition and multilayer ceramic component using the same - Google Patents

Abstract

(57) Abstract: A low-resistance conductor such as Cu or Ag can be fired at a temperature of 800 to 1000 ° C. or less, and can have a low dielectric loss tan δ (high Q).
Value), and a dielectric ceramic composition having a relative dielectric constant ε _r of about 8 to 30 so that the absolute value of the temperature coefficient τ _f of the resonance frequency is small and a multilayer ceramic part or the like can be formed to an appropriate size. provide. A general formula _{xZn 2 TiO 4 - (1-} x) Zn
The glass component is not less than 5 parts by weight and not more than 1 part by weight with respect to 100 parts by weight of the main component represented by TiO ₃ and x is in the range of 0 <x <1.
The present invention relates to a dielectric ceramic composition containing 50 parts by weight or less.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a dielectric ceramic composition which can be co-fired with low resistance conductors such as Au, Ag and Cu and has a low dielectric loss (high Q value) suitable for laminated ceramic parts. , And a monolithic ceramic component such as a monolithic ceramic capacitor and an LC filter using the same. In particular, the present invention relates to a dielectric ceramic composition comprising a Zn ₂ TiO ₄ —ZnTiO ₃ component and a glass component, and a laminated ceramic component using the same.

[0002]

2. Description of the Related Art In recent years, with the integration of microwave circuits,
There is a demand for a compact dielectric resonator having a small dielectric loss (tan δ) and stable dielectric characteristics. The dielectric ceramic composition used for such a dielectric resonator has a relatively large relative permittivity ε _r , a large unloaded Q value, and a small temperature coefficient τ _f of the resonance frequency. Is required. Generally, the larger the relative permittivity ε _r , the smaller the resonator, but the higher the resonance frequency, the smaller the resonator. However, if the resonator becomes too small, the processing accuracy will decrease and it will be easily affected by the printing accuracy of the electrodes.Therefore, the relative permittivity ε _r should be within an appropriate range so that the resonator does not become too small depending on the application. Things are required.
The present invention relates to a dielectric ceramic composition having a relative dielectric constant ε _r of about 8 to 30.

As a dielectric ceramic composition of this type, BaO
-MgO-WO ₃ based material _{(JP-A-6-236708), Al 2 O 3 -TiO} 2 -Ta 2 O 5 based materials (JP-A 9-52760 JP) have been proposed.

[0004]

Recently, multilayer ceramic parts such as multilayer ceramic capacitors and LC filters in which dielectric ceramic compositions are laminated have been developed, and the dielectric ceramic composition and internal electrodes are laminated by simultaneous firing. Is being implemented. However, since the firing temperature of the dielectric porcelain composition is as high as 1300 to 1400 ° C., it is difficult to perform the firing with the internal electrode at the same time, and in order to form a laminated structure, palladium which can withstand high temperature as an electrode material is used. (Pd)
It was limited to materials such as platinum and platinum (Pt). For this reason,
Low resistance conductor and cheap silver (Ag), A as electrode material
There is a demand for a dielectric ceramic composition that can be co-fired at a low temperature of 1000 ° C. or lower using g-Pd, Cu and the like.

An object of the present invention is to make a low resistance conductor such as Cu or Ag co-fired so that the interior and the multilayer structure can be realized.
Can be fired at a temperature of up to 1000 ° C, has a low dielectric loss tan δ (high Q value), has a small absolute value of the resonance frequency temperature coefficient τ _f , and forms a multilayer ceramic component or the like in an appropriate size. So that the relative permittivity ε _r is 8 to 3
It is to provide a dielectric ceramic composition of about 0. Further, a dielectric layer made of such a dielectric ceramic composition and C
It is an object of the present invention to provide a monolithic ceramic component such as a monolithic ceramic capacitor or an LC filter having an internal electrode containing u or Ag as a main component.

[0006]

Means for Solving the Problems The inventors of the present invention have made earnest studies to solve the above problems in conventional dielectric ceramic materials, and as a result, found that the following compositions satisfy the above requirements. I found it.

[0007] The present invention has the general formula _xZn 2 _TiO 4 - (1-
x) A dielectric porcelain containing 5 parts by weight or more and 150 parts by weight or less of a glass component with respect to 100 parts by weight of a main component represented by ZnTiO ₃ and x in the range of 0 <x <1. It relates to a composition.

As the glass component, PbO-based glass is used.
Glass, ZnO glass, SiO_TwoGlass or Pb
O, ZnO, Bi_TwoO_Three, BaO, B_TwoO_Three, Si
O_Two, ZrO _Two, TiO_Two, Al_TwoO_Three, CaO, Sr
Gas composed of two or more metal oxides selected from the group of O
It is preferably lath.

Further, the present invention relates to the above dielectric ceramic composition containing 40 parts by weight or less of CuO with respect to 100 parts by weight of the main component of.

The present invention also relates to the above dielectric ceramic composition containing 30 parts by weight or less of MnO with respect to 100 parts by weight of the main component.

Further, according to the present invention, ZnO powder and TiO ₂ powder are mixed and calcined to obtain Zn ₂ TiO ₄ and Zn.
A calcined powder composed of TiO ₃ is obtained, and 5 parts by weight or more and 150 parts by weight or less of a glass component is added to 100 parts by weight of the calcined powder.
And, if necessary, CuO and MnO are mixed to form 800 to 1
The present invention relates to a method for producing the above-mentioned dielectric ceramic composition that is fired at 000 ° C.

Furthermore, the present invention provides a laminated ceramic component comprising a plurality of dielectric layers, internal electrodes formed between the dielectric layers, and external electrodes electrically connected to the internal electrodes, wherein the dielectric The body layer is made of a dielectric ceramic obtained by firing the dielectric ceramic composition, and the internal electrodes are made of Cu simple substance or Ag simple substance, or an alloy material containing Cu or Ag as a main component. The present invention relates to a laminated ceramic component.

By using a specific composition of Zn ₂ TiO ₄ , ZnTiO ₃ and a glass component, 1000 ° C.
At the firing temperatures below, the relative permittivity ε _r is about 8 to 30, the dielectric loss is small, and the absolute value of the temperature coefficient of the resonance frequency is 60.
It can be ppm / ° C. or less. Further, the firing temperature can be further lowered by adding CuO or MnO as an accessory component. As a result, it is possible to provide a monolithic ceramic component having Cu or Ag alone or an internal electrode containing Cu or Ag as a main component.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The dielectric ceramic composition of the present invention will be specifically described below. The dielectric ceramic composition of the present invention have the general formula _{xZn 2 TiO 4 - (1-} x) ZnTiO 3
And a principal component 100 in which x is in the range of 0 <x <1
It is characterized by containing 5 parts by weight or more and 150 parts by weight or less of a glass component with respect to parts by weight.

In the above composition, when x is in the range of 0 <x <1, the absolute value of the temperature coefficient of the resonance frequency is 60 ppm / ° C. or less, the relative permittivity ε _r is about 8 to 30, and a high Q × f value is obtained. Show.

Further, in the dielectric ceramic composition of the present invention, if the glass component is less than 5 parts by weight with respect to 100 parts by weight of the main component as the ceramic base material, the firing temperature becomes high, and
If the amount exceeds 0 part by weight, the glass tends to elute and react with the setter.

Zn ₂ TiO ₄ used in the present invention can be obtained by mixing zinc oxide ZnO and titanium oxide TiO ₂ in a molar ratio of 2: 1 and firing. Also, Z
nTiO ₃ can be obtained by mixing ZnO and TiO ₂ in a molar ratio of 1: 1 and firing. Zn ₂ TiO
₄ and ZnTiO ₃ as raw materials, TiO ₂ and ZnO
In addition, nitrates, carbonates, hydroxides, chlorides, organometallic compounds, and the like that become oxides during firing may be used.

The dielectric ceramic composition of the present invention is characterized by containing a predetermined amount of glass. Here, the glass is an amorphous solid substance, which is obtained by melting. Crystallized glass including partially crystallized glass is also included in the glass. The solid substance may be an inorganic substance made of an oxide, and the glass used in the present invention may be a PbO type glass, a ZnO type glass, a SiO ₂ type glass, or a glass made of another metal oxide. P
The bO-based glass is a glass containing PbO and contains PbO.
_{O-SiO 2, PbO-B} 2 O 3, or glass containing _{PbO-P 2 O 5, R} 2 O-PbO-SiO 2, R 2 O
_{-CaO-PbO-SiO 2, R} 2 O-ZnO-PbO
_{-SiO 2, R 2 O-Al} 2 O 3 -PbO-SiO 2 glass (however, where R is _Na 2 _{O, K} 2 O) containing the like are exemplified. ZnO-based glass is a glass containing _{ZnO, ZnO-Al 2 O 3} -BaO-Si
_{O 2, ZnO-Al 2 O} 3 -R 2 O-SiO 2, etc. are exemplified. SiO ₂ glass is a glass containing _{SiO 2, SiO 2 -Al 2 O} 3 -R 2 O, SiO
₂ -Al ₂ O ₃ -BaO, etc. are exemplified.

Further, as the glass used in the present invention,
In addition to PbO-based glass, ZnO-based glass, and SiO ₂ -based glass, glasses made of various metal oxides can also be used, and PbO, ZnO, Bi ₂ O ₃ , BaO, B ₂ O can be used.
₃ , SiO ₂ , ZrO ₂ , TiO ₂ , Al ₂ O ₃ , Ca
Glass made of two or more kinds of metal oxides selected from the group consisting of O and SrO is also used. As the glass, either amorphous glass or crystalline glass may be used. When PbO is contained, the firing temperature tends to decrease, but the unloaded Q value tends to decrease, and the content of PbO component in the glass is 4
It is preferably 0% by weight or less. In addition, glass containing SiO ₂ and Al ₂ O ₃ components at the same time in the glass (that is, SiO ₂ −
Al ₂ O ₃ based glass) is particularly suitable as the glass used in the present invention. In particular, according to the present invention, _ZnO-Al 2 _{O 3}
-BaO-SiO ₂ is preferable from the viewpoint that it is possible to obtain a high unloaded Q value.

According to the invention, the general formula xZn ₂ TiO ₄
- is represented by (1-x) ZnTiO _3, relative to 100 parts by weight of the main component is in the range x is 0 <x <1, and by containing less 150 parts by weight 5 parts by weight or more of the glass components, 800 Dielectric porcelain which can be sintered at low temperature up to 1000 ° C, has a relative permittivity ε _r of about 8 to 30, has a large unloaded Q value, and has a temperature coefficient τ _{f of} resonance frequency within ± 60 ppm / ° C. A composition can be obtained.

In the present invention, Zn ₂ TiO ₄ , Z before firing
The nTiO ₃ and glass particles are individually crushed and mixed, or each raw material particle is pulverized in a mixed state, but the average particle diameter of these raw material particles before firing is 5 μm.
When it is less than 1, preferably 1 μm or less, further low temperature firing becomes possible. If the average particle size is made too small, handling may become difficult, so 0.0
It is preferably 5 μm or more.

Further, in the present invention, the dielectric ceramic composition further contains CuO as an auxiliary component, and has the general formula xZ.
n ₂ TiO ₄ - is represented by _{(1-x) ZnTiO 3,} x is 0 <x <against 100 parts by weight of the main component is within the first range, the glass component 5 parts by weight or more 150 parts by weight or less, Cu
By using a dielectric ceramic composition containing 40 parts by weight of O, the firing temperature can be further lowered without deteriorating the various characteristics described above. When CuO exceeds 40 parts by weight with respect to 100 parts by weight of the main component, τ _f is -60.
It is not preferable because the ppm / ° C becomes smaller.

Further, in the present invention, MnO is added to the above-mentioned dielectric ceramic composition as an auxiliary component to give a compound of the general formula xZ.
n ₂ TiO ₄ - is represented by _{(1-x) ZnTiO 3,} x is 0 <x <against 100 parts by weight of the main component is within the first range, the glass component 5 parts by weight or more 150 parts by weight or less, Mn
Also by using a dielectric ceramic composition containing 30 parts by weight of O, the firing temperature can be similarly lowered without deteriorating the various characteristics described above. MnO is the main component 10
When the amount exceeds 30 parts by weight with respect to 0 parts by weight, the Q value decreases, which is not preferable.

CuO or MnO added as a sub-component may be added alone or both components may be added together.

Next, a method for producing the dielectric ceramic composition of the present invention will be described. The dielectric porcelain composition of the present invention is Z
A calcined powder composed of Zn ₂ TiO ₄ and ZnTiO ₃ is obtained by mixing nO powder and TiO ₂ powder and calcining, and 5 parts by weight or more and 150 parts by weight or more of a glass component is added to 100 parts by weight of the calcined powder. Parts and below, and if necessary CuO40
80 parts by weight or less than 50 parts by weight or MnO
It is obtained by firing at 0 to 1000 ° C.

A more detailed description will be given below. First,
Tan TiO_TwoAnd zinc oxide ZnO are weighed in a predetermined ratio,
Wet mix with a solvent such as water or alcohol. continue,
After removing water, alcohol, etc., crush and crush in an oxygen-containing atmosphere.
Approximately 900-1200 ° C under air (for example, air atmosphere)
Pre-baking is performed for about 1 to 5 hours. The temporary obtained in this way
Specified baked powder and glass and optionally CuO or MnO
Weigh it in the ratio of, and wet mix it with a solvent such as water or alcohol.
To meet. Then, after removing water, alcohol, etc., crushing
Then, a raw material powder is produced. Titanium oxide TiO_TwoAnd suboxide
The ratio of lead ZnO is TiO 2._Two: ZnO = 1: 1, calcination
ZnTiO as powder_ThreeIs generated by TiO _Two: ZnO =
In 1: 2, Zn was used as a calcined powder._TwoTiO_FourIs generated.
TiO_TwoThe ratio of ZnO and ZnO is within the above range, that is, TiO_Two: Z
nO = 1: Z (where Z is 1 <Z <2), ZnT
iO_ThreeAnd Zn_TwoTiO_FourAre simultaneously generated, and the ratio (Zn
TiO_Three/ Zn_TwoTiO_Four) Is (2-Z) / (Z-
It is represented by 1). With this method, the target ratio
Rate of ZnTiO_ThreeAnd Zn_TwoTiO_FourCan get
It

It should be noted that ZnTiO ₃ and Zn ₂ Ti having a predetermined ratio are used.
A mixed powder of TiO ₂ and ZnO preliminarily calculated and blended as described above may be used to obtain O ₄ at a time.
A calcinated powder of TiO _{3 and} a calcined powder of Zn ₂ TiO ₄ are separately generated, and they are mixed with glass and CuO or M as necessary.
You may mix nO.

The dielectric properties of the dielectric ceramic composition of the present invention are evaluated by the shape of pellets. Specifically, the raw material powder is mixed with an organic binder such as polyvinyl alcohol, homogenized, dried and pulverized, and then pressure-molded into a pellet shape (pressure 100 to 1000 kg / cm ² ). A dielectric ceramic composition can be obtained by firing the obtained molded product at 800 to 1000 ° C. in an oxygen-containing gas atmosphere such as air.

The dielectric ceramic composition thus obtained is processed into various shapes and sizes as required, or is formed into a sheet by a doctor blade method or the like, and laminated with a sheet and an electrode to obtain various laminated ceramic parts. It can be used as a material. Examples of the monolithic ceramic parts include monolithic ceramic capacitors, LC filters, dielectric resonators and dielectric substrates.

The laminated ceramic component of the present invention comprises a plurality of dielectric layers, internal electrodes formed between the dielectric layers, and external electrodes electrically connected to the internal electrodes.
The dielectric layer is made of a dielectric ceramic obtained by firing the dielectric ceramic composition, and the internal electrodes are made of Cu simple substance or Ag simple substance, or an alloy material containing Cu or Ag as a main component. ing. The multilayer ceramic component of the present invention comprises a dielectric layer containing a dielectric ceramic composition and Cu.
It is obtained by co-firing a simple substance or a simple substance of Ag, or an alloy material containing Cu or Ag as a main component.

As one embodiment of the above-mentioned laminated ceramic component, for example, a triplate type resonator shown in FIG. 1 can be cited. FIG. 1 is a perspective view showing a triplate type resonator according to one embodiment of the present invention. As shown in FIG. 1, the triplate-type resonator includes a plurality of dielectric layers, an internal electrode 2 formed between the dielectric layers, and an external electrode 3 electrically connected to the internal electrode. It is a multilayer ceramic component provided. The triplate type resonator is
It is obtained by stacking a plurality of dielectric ceramic layers 1 with the internal electrode 2 arranged in the central portion. The internal electrode 2 is formed so as to penetrate from the first surface A shown in FIG. 1 to the second surface B opposite thereto, and only the first surface A is an open surface,
The external electrodes 3 are formed on the five surfaces of the resonator except the first surface A, and the internal electrodes 2 and the external electrodes 3 are formed on the second surface B.
Are connected. The material of the internal electrode 2 is Cu or A
g, or these are the main components. Since the dielectric ceramic composition of the present invention can be fired at a low temperature, these internal electrode materials can be used.

[0032]

Example 1 Titanium oxide (TiO ₂ ) 0.45 mol, zinc oxide (Zn)
0.55 mol of O) was put into a ball mill together with ethanol and wet-mixed for 12 hours. After the solution was desolvated, it was pulverized and calcined at 1000 ° C. in an air atmosphere to prepare a base material. 52% by weight of ZnO, Si based on 100 parts by weight of this base material
O ₂ 6 wt%, Al ₂ O ₃ 12 wt%, B ₂ O ₃
What was added with 10 parts by weight of glass powder composed of 30% by weight was put into a ball mill and wet-mixed for 24 hours.
After desolvating the solution, pulverize until the average particle size becomes 1 μm,
An appropriate amount of a polyvinyl alcohol solution was added to this pulverized product, which was dried, and then formed into pellets having a diameter of 12 mm and a thickness of 4 mm, and the pellets were baked at 900 ° C. for 2 hours in an air atmosphere. The X-ray diffraction diagram of the produced sintered body is shown in FIG. Figure 2
As shown in the above, the Zn ₂ TiO ₄ phase and the ZnTiO ₃ phase coexisted.

The dielectric ceramic composition thus obtained was processed into a size of 7 mm in diameter and 3 mm in thickness, and then subjected to no-load Q at a resonance frequency of 7 to 11 GHz by the dielectric resonance method.
The value, the relative permittivity ε _r, and the temperature coefficient τ _f of the resonance frequency were obtained. The results are shown in Table 2.

[0034]

[Table 1]

[0035]

[Table 2]

Further, to 100 g of the mixture of the base material and glass, 9 g of polyvinyl butyral as a binder, 6 g of dibutyl phthalate as a plasticizer, 60 g of toluene as a solvent and 30 g of isopropyl alcohol were added, and a green layer having a thickness of 100 μm was obtained by a doctor blade method. A sheet was prepared. And, this green sheet, 65 ℃
Twenty-two layers were laminated by thermocompression bonding at a temperature of 200 kg / cm ² . At that time, the layer printed with Ag as the internal electrode was arranged so as to come to the central portion in the thickness direction. The obtained laminate was fired at 900 ° C. for 2 hours, and then an external electrode was formed to produce a triplate type resonator.
The size is width 4.9 mm, height 1.7 mm, length 8.4.
mm.

The obtained triplate-type resonator is
The unloaded Q value was evaluated at a resonance frequency of 2 GHz. That
As a result, the firing temperature was 900 ° C, the shrinkage rate was 19%, and the relative dielectric
Rate ε _rIs 21, the temperature coefficient τ of the resonance frequency_fIs 0 ppm / ° C
The unloaded Q was 210. Thus, according to the present invention,
By using the dielectric ceramic composition
A triplate-type resonator having is obtained.

Examples 2 to 4 Zn ₂ TiO ₄ and Zn after calcination as in Example 1 above
TiO ₂ and Z so that the ratio of TiO ₃ becomes as shown in Table 1.
nO was mixed and calcined, and the calcined powder was used as a base material. This base material and glass were mixed in the compounding amounts shown in Table 1, and pellet-shaped sintered bodies were prepared under the same conditions as in Example 1. Example 1
Various characteristics were evaluated in the same manner as in. The results are shown in Table 2.
It was shown to.

Examples 5 to 9 Zn ₂ TiO ₄ and Zn after calcination as in Example 1 above
TiO ₂ and Z so that the ratio of TiO ₃ becomes as shown in Table 1.
nO was mixed and calcined, and the calcined powder was used as a base material. This base material and glass were mixed in the compounding amounts shown in Table 1, and pellet-shaped sintered bodies were prepared under the same conditions as in Example 1. Example 1
Various characteristics were evaluated in the same manner as in. The results are shown in Table 2.
It was shown to.

Examples 10 to 14 Zn ₂ TiO ₄ and Zn after calcination as in Example 1 above
TiO ₂ and Z so that the ratio of TiO ₃ becomes as shown in Table 1.
nO was mixed and calcined, and the calcined powder was used as a base material. The base material and various glasses shown in Table 1 were mixed at the compounding amounts shown in Table 1, and pelletized under the same conditions as in Example 1. A sintered body was prepared and various characteristics were evaluated by the same method as in Example 1. The results are shown in Table 2.

Examples 15 and 16 Zn ₂ TiO ₄ and Zn after calcination as in Example 1 above
TiO ₂ and Z so that the ratio of TiO ₃ becomes as shown in Table 1.
nO is mixed and calcined, and the calcined powder is used as a base material, and the base material and various glasses shown in Table 1 are mixed at the compounding amounts shown in Table 1, and then the average particle diameter shown in Table 1 is obtained. It was pulverized until it became, and a pellet-shaped sintered body was produced under the same conditions as in Example 1, and various characteristics were evaluated by the same method as in Example 1.
The results are shown in Table 2.

Examples 17 to 19 A mixture of Zn ₂ TiO ₄ and ZnTiO _{3 in} the blending amounts shown in Table 1 was used as a base material in the same manner as in the above-mentioned Example 1, and this base material and various materials shown in Table 1 were used. After mixing glass and MnO in the blending amounts shown in Table 1, the mixture was pulverized until the particle diameter became the average particle diameter described in Table 1, and a pellet-shaped sintered body was prepared under the same conditions as in Example 1, Various properties were evaluated in the same manner as in Example 1. The results are shown in Table 2.

Examples 20 to 22 Similar to the above Example 1, a mixture of Zn ₂ TiO ₄ and ZnTiO _{3 in} the compounding amounts shown in Table 1 was used as a base material, and this base material and various kinds of materials shown in Table 1 were used. After mixing glass and CuO in the compounding amounts shown in Table 1, the particles were pulverized until the average particle size shown in Table 1 was obtained, and a pellet-shaped sintered body was prepared under the same conditions as in Example 1, Various properties were evaluated in the same manner as in Example 1. The results are shown in Table 2.

Examples 23 and 24 As in the case of Example 1 above, a mixture of Zn ₂ TiO ₄ and ZnTiO _{3 in} the compounding amounts shown in Table 1 was used as a base material, and this base material and various kinds of materials shown in Table 1 were used. After mixing glass and MnO and CuO in the blending amounts shown in Table 1, the particles were pulverized until the particle diameters became the average particle diameters shown in Table 1, and pellet-shaped sintered bodies were prepared under the same conditions as in Example 1. Then, various characteristics were evaluated in the same manner as in Example 1. The results are shown in Table 2.

Comparative Examples 1 to 4 Zn ₂ TiO ₄ and Zn after calcination as in Example 1 above
TiO ₂ and Z so that the ratio of TiO ₃ becomes as shown in Table 1.
nO was mixed and calcined, the calcined powder was used as a base material, and the glass in Table 1 was mixed in the compounding amounts shown in Table 1, and then a pellet-shaped sintered body was prepared under the same conditions as in Example 1. did. However, the amount of glass added is 5 with respect to 100 parts by weight of the base material.
Under conditions of less than 1 part by weight, sintering cannot be performed below 1000 ° C. 1
The densification could not be achieved unless the temperature was raised to 200 ° C. On the other hand, when the amount exceeded 150 parts by weight, the glass was eluted and reacted with the setter, and a good sintered body could not be obtained.
The results are shown in Table 2.

[0046]

According to the dielectric ceramic composition of the present invention, the relative permittivity ε _r is 8 to 30, the unloaded Q value is large,
Moreover, it is possible to provide a dielectric ceramic composition having a small temperature coefficient τ _{f of} resonance frequency within ± 60 ppm / ° C.
Further, since the firing can be performed at a temperature of 1000 ° C. or less, the power cost required for firing can be reduced and Cu alone or A
It is possible to co-fire with a low-resistance conductor made of a simple substance of g or an alloy material containing Cu or Ag as a main component, and it is possible to provide a laminated component using this as an internal electrode.

[Brief description of drawings]

FIG. 1 is an example of a monolithic ceramic component according to the present invention.

2 is an X-ray diffraction diagram of a sintered body of the dielectric ceramic composition according to the present invention obtained in Example 1. FIG.

[Explanation of symbols]

1 Dielectric ceramic layer 2 internal electrodes 3 external electrodes

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) H01G 4/12 361 H01G 4/12 361 (72) Inventor Koichi Fukuda 5 of 1978 Kogushi, Ube City, Yamaguchi Prefecture Ube Kosan Co., Ltd. U-Terminal F-term (reference) 4G031 AA04 AA05 AA06 AA11 AA12 AA19 AA25 AA26 AA28 AA29 AA30 AA32 AA35 BA09 CA03 GA11 5E001 AB03 AE02 AE03 AH01 AH01 AH06 AH09 AJ01 AJ01 AJ02 A0302A03 A02

Claims (6)

[Claims] 1. The general formula xZn ₂ TiO ₄ — (1-x) Z.
A dielectric ceramic composition containing 5 parts by weight or more and 150 parts by weight or less of a glass component with respect to 100 parts by weight of a main component represented by nTiO ₃ and x in the range of 0 <x <1. . 2. The glass component is PbO-based glass, Z
nO glass, SiO_TwoGlass, PbO, Zn
O, Bi_TwoO_Three, BaO, B_TwoO_Three, SiO _Two, ZrO
_Two, TiO_Two, Al_TwoO_Three, CaO, SrO
Selected from glasses consisting of two or more selected metal oxides
1. At least one of the following:
The dielectric ceramic composition described. 3. Cu based on 100 parts by weight of the main component
2. O is contained in an amount of 40 parts by weight or less.
Or the dielectric ceramic composition according to 2. 4. Mn based on 100 parts by weight of the main component
3. O is contained in an amount of 30 parts by weight or less.
Or the dielectric ceramic composition according to 2. 5. A calcined powder consisting of Zn ₂ TiO ₄ and ZnTiO ₃ is obtained by mixing ZnO powder and TiO ₂ powder and calcining, and a glass component is added to 100 parts by weight of the calcined powder. 80 parts by weight from 5 parts by weight to 150 parts by weight
The method for producing a dielectric ceramic composition according to claim 1, wherein the firing is performed at 0 to 1000 ° C. 6. A laminated ceramic component comprising a plurality of dielectric layers, internal electrodes formed between the dielectric layers, and external electrodes electrically connected to the internal electrodes, wherein the dielectric layers are A dielectric porcelain obtained by firing the dielectric porcelain composition according to any one of claims 1 to 4, wherein the internal electrodes are Cu simple substance or Ag simple substance, or Cu or A.
A monolithic ceramic part formed of an alloy material containing g as a main component.