WO2012086449A1 - 圧電セラミックス、圧電セラミックス部品、及び該圧電セラミックス部品を用いた圧電デバイス - Google Patents
圧電セラミックス、圧電セラミックス部品、及び該圧電セラミックス部品を用いた圧電デバイス Download PDFInfo
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Definitions
- the present invention relates to a piezoelectric ceramic having an alkali-containing niobate-based perovskite structure that does not contain a heavy metal element such as lead, and a piezoelectric sounding body, a piezoelectric sensor, a piezoelectric actuator, a piezoelectric transformer, a piezoelectric ultrasonic motor, and the like using the piezoelectric ceramic.
- the present invention relates to a ceramic component and a piezoelectric device using the piezoelectric ceramic component.
- Piezoelectric ceramics are a type of piezoelectric material that converts electrical energy into mechanical energy and mechanical energy into electrical energy, and are applied to many electronic devices.
- this piezoelectric ceramic for example, a binary lead-containing piezoelectric ceramic (hereinafter referred to as “PZT”) composed of two components of PbTiO 3 —PbZrO 3 , Pb (Mg 1/3 Nb 2/3 ) O 3 , A ternary lead-containing piezoelectric ceramic having Pb (Zn 1/3 Nb 2/3 ) O 3 as a third component is known. Since these PZTs have a high piezoelectric effect, they are widely used as piezoelectric ceramic parts. However, the piezoelectric ceramics mainly composed of PZT have a problem of high environmental loads such as volatilization of PbO during the production process and outflow of Pb components due to exposure to acid rain.
- Non-Patent Document 1 discloses a piezoelectric ceramic having an alkali-containing niobate-based perovskite structure and having a piezoelectric effect comparable to PZT.
- piezoelectric ceramics having an alkali-containing niobic acid-based perovskite structure are further disclosed in JP 2002-068835 (Patent Document 1), JP 2003-342069 A (Patent Document 2), and JP 2004-300012 A. (Patent Document 3).
- the piezoelectric ceramics of Patent Documents 2 and 3 are mainly composed of Li, Na, K, Nb, Ta, Sb, and O, and are represented by the general formula ⁇ Li x [Na 1-y K y ] 1-x ⁇ a ⁇ Nb 1-z-w Ta z Sb w ⁇ b O 3 (wherein x, y, z, w, a and b represent molar ratios, 0 ⁇ x ⁇ 0.2, 0 ⁇ y ⁇ 1, 0 ⁇ z ⁇ 0.4, 0 ⁇ w ⁇ 0.2, a ⁇ 0.95, b ⁇ 1.05), and has high piezoelectric characteristics (piezoelectric constant, electromechanical coupling coefficient, etc.) .
- Patent Document 4 0.001 mol to 0.15 mol of Ag is added to 1 mol of the main component compound represented by the above general formula. As a result, it is possible to improve one or more characteristics of piezoelectric constant, electromechanical coupling coefficient, relative permittivity, dielectric loss, and Curie temperature.
- antimony (Sb) belongs to a heavy metal and there is a concern about toxicity to the human body. Therefore, a piezoelectric ceramic containing no antimony is desired.
- tantalum (Ta) can lower the Curie temperature to increase the dielectric constant of piezoelectric ceramics and enhance the characteristics such as piezoelectric constant, but on the other hand, the firing temperature necessary to obtain dense ceramics increases. End up.
- piezoelectric ceramics (hereinafter referred to as “LNKN”) having an alkali-containing niobate-based perovskite structure that does not contain Sb and Ta but contain Li, Na, K, Nb, and O as constituent elements are excellent piezoelectrics. While having characteristics, it is inferior in sinterability to lead-containing piezoelectric ceramics.
- Li 0.06 Na 0.47 K 0.47 NbO 3 which is a kind of LNKN, has a displacement characteristic d 33 in the polarization axis direction of 235 pC / N as described in Non-Patent Document 2. Although some excellent properties are exhibited, it is necessary to fire at 1050 ° C. to 1100 ° C.
- Patent Document 5 JP 2008-207999 A (Patent Document 5), by using a sintering aid in which Li 2 CO 3 , LiBO 2 , and Li 2 B 4 O 7 are mixed, dense sintering is performed at a low sintering temperature. Techniques for obtaining a body are disclosed. However, since Li 2 CO 3 remains in the sintered body as Li 2 O after firing, the resistance of the ceramic is reduced. In addition, LiBO 2 and Li 2 B 4 O 7 cause a decrease in piezoelectric characteristics.
- Patent Document 6 Japanese Patent Laid-Open No. 2004-115293 states that the element (Nb, Ta) at the B site of (K, Na) (Nb, Ta) O 3 is in excess of the stoichiometric ratio.
- a piezoelectric ceramic is disclosed in which the composition of the starting material is adjusted and CuO is added to improve the sinterability.
- this piezoelectric ceramic also requires a sintering temperature of 1050 ° C. or higher in order to obtain a dense sintered body.
- JP 2002-068835 A JP 2003-342069 A JP 2004-300012 A JP 2008-169113 A JP 2008-207999 A JP 2004-115293 A
- LNKN can obtain a dense sintered body around 1000 ° C. and has high piezoelectric properties. It is not sufficient as an alternative to lead-containing piezoelectric ceramics.
- the firing temperature is desirably about 1000 ° C. in order to suppress the shrinkage of the internal electrode.
- a technique for obtaining a dense sintered body of LNKN to an extent has not been known so far.
- Various embodiments of the present invention aim to provide a ceramic compound mainly composed of LNKN that can be sintered at around 1000 ° C. without impairing the piezoelectric characteristics.
- the present inventors deposit Li 3 NbO 4 crystal phase on a piezoelectric ceramic having an alkali-containing niobate-based perovskite structure containing Li, Na, K, Nb and O as constituent elements, whereby the piezoelectric ceramic is 1000 ° C. It was found that it can be fired densely before and after.
- the piezoelectric ceramic according to one embodiment of the present invention is a ceramic mainly including a piezoelectric ceramic having an alkali-containing niobic acid-based perovskite structure containing Li, Na, K, Nb, and O as a constituent element, and the composition formula is Li 3 NbO 4.
- the crystal phase represented by is retained.
- a ceramic compound mainly composed of LNKN that can be sintered at around 1000 ° C. without impairing piezoelectric characteristics is provided.
- Piezoelectric ceramic materials include Li, Na, K, Nb, and O as constituent elements, and piezoelectric ceramics having an alkali-containing niobate-based perovskite structure (that is, LNKN) as main components.
- the alkali-containing niobic acid-based perovskite structure is a kind of ABO 3 type perovskite structure, which contains an alkali metal element such as K, Na, Li or the like at the A site and Nb at the B site.
- FIG. 1 shows a schematic diagram of a perovskite structure.
- the perovskite structure has a unit structure in which 6 Os are coordinated around the B site and 12 Os are coordinated around the A site, and this unit structure is periodically continuous. Thus, a crystal is formed.
- the composition ratio (molar ratio) between the element occupying the A site and the element occupying the B site is 1: 1 according to the stoichiometric ratio of the perovskite structure, all site positions correspond. Occupied with elements, a stable structure is obtained.
- the composition of the sintered body of LNKN varies by up to about 2% from the composition according to the stoichiometric ratio due to elution of K, Na, Li and volatilization of K, Na, Li in the calcination process or firing process. Can do.
- the amount of variation of these constituent elements varies depending on the raw materials, synthesis time, and synthesis process.
- the blending ratio of the elements occupying the A site (K, Na, Li) to the raw materials of the elements occupying the B site is higher than the ideal blending ratio determined from the stoichiometric ratio
- the composition ratio of the element occupying the A site and the element occupying the B site of the sintered body finally obtained is set to a stoichiometric ratio of 1: 1.
- the composition ratio of the element contained in the A site after sintering and the element contained in the B site is 0.98 ⁇ A / B ⁇ 1.
- a range of 01 is desirable.
- oxides such as K 2 O, Na 2 O, Li 2 O, palm K 2 CO 3 , Na 2 CO 3 , Li 2 CO A carbonic acid compound such as 3 may precipitate, which may reduce the specific resistivity of the obtained piezoelectric ceramic or cause deliquescence.
- a piezoelectric ceramic having high sinterability is obtained by precipitating Li 3 NbO 4 on a main component composed of LNKN.
- Li 3 NbO 4 can be precipitated on the main component composed of LNKN by blending a Li raw material such as Li 2 CO 3 so that Li is in excess of the stoichiometric ratio of LNKN. .
- a Li raw material such as Li 2 CO 3
- commercially available Li 2 CO 3 can be preliminarily pulverized in a ball mill for 24 hours to have an average particle size of 1 ⁇ m or less. Most of commercially available Li 2 CO 3 has an average particle diameter of 5 ⁇ m or more.
- the piezoelectric ceramic according to the embodiment of the present invention by precipitating Li 3 NbO 4 on the main component composed of LNKN, the piezoelectric ceramic is easily sintered at around 1000 ° C. and does not contain the Li 3 NbO 4 crystal phase. In comparison, a piezoelectric ceramic whose piezoelectric characteristics are not impaired can be obtained.
- the Li 3 NbO 4 crystal phase in which the alkali component is excessive than the main component is precipitated on the main component of the perovskite structure containing the alkali component and niobium in a one-to-one relationship.
- the alkaline component volatilized from the perovskite structure during sintering can be supplemented with excess Li, thereby supplementing the sinterability.
- the Li 3 NbO 4 crystal phase is a cubic crystal phase described in PDF-01-082-1198 or PDF-01-075-0902 in ICSD (Inorganic Crystal Structure Database). Also good.
- the lattice constant of the Li 3 NbO 4 crystal phase is 8.412 ⁇ or 8.429 ⁇ .
- the lattice constants and the respective diffraction line intensity ratios for example, the lattice constants in the second digit or less of the comma may change depending on the crystallinity of the Li 3 NbO 4 crystal phase, the defect factor in the crystal structure, and the like. However, this is not an obstacle to the present invention.
- the piezoelectric ceramic according to an embodiment of the present invention has a composition formula ⁇ Li x [Na y K 1-y ] 1-x ⁇ a NbO 3 (where 0.0 ⁇ x ⁇ 0.20, 0 ⁇ y ⁇ 1, 1.0 ⁇ a ⁇ 1.01)).
- the piezoelectric ceramic according to one embodiment has a composition formula ⁇ Li x [Na y K 1-y ] 1-x ⁇ a NbO 3 (where 0.03 ⁇ x ⁇ 0.10, 0.40 ⁇ y ⁇ 0.60 and 1.0 ⁇ a ⁇ 1.01).
- composition ratio of the constituent elements of the piezoelectric ceramic according to the embodiment of the present invention within the range shown in these composition formulas, it is possible to obtain characteristics comparable to the piezoelectric characteristics of the lead-containing piezoelectric ceramic, It can be fired densely around 1000 ° C. Therefore, a lead-free piezoelectric ceramic that can replace the lead-containing piezoelectric ceramic used in the piezoelectric device can be provided.
- the piezoelectric ceramic according to an embodiment of the present invention has a value of 0.002 in terms of Ag 2 O with respect to 100 mol of the main component consisting of LNKN represented by ⁇ Li x [Na y K 1-y ] 1-x ⁇ a NbO 3 .
- You may contain Ag of the range of 1 mol or more and 0.5 mol. Thereby, precipitation of the Li 3 NbO 4 crystal phase can be further promoted, and sintering can be performed more easily without impairing the piezoelectric characteristics.
- Ag is contained in a range from 0.1 mol to 0.25 mol in terms of Ag 2 O with respect to 100 mol of the main component.
- Patent Document 4 discloses that Ag is added to a main component containing Ta and Sb.
- the piezoelectric ceramic according to the embodiment of the present invention does not contain Ta or Sb. And the piezoelectric ceramic disclosed in the above.
- the piezoelectric ceramic in one embodiment of the present invention contains at least one kind of first transition elements such as Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn. As a result, it becomes possible to control the sintering temperature, to control the growth of particles, and to control the dielectric breakdown at high electric field.
- first transition elements such as Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, and Zn.
- the piezoelectric ceramic in one embodiment of the present invention contains at least one kind of second transition elements Y, Zr, Mo, Ru, Rh, and Pd. As a result, it becomes possible to control the sintering temperature, to control the growth of particles, and to control the dielectric breakdown at the time of increasing the electric field.
- the piezoelectric ceramic in one embodiment of the present invention includes third transition elements La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Hf, W, Re, At least one type of Os, Ir, Pt, and Au is included. As a result, it becomes possible to control the sintering temperature, to control the growth of particles, and to control the dielectric breakdown at the time of increasing the electric field.
- the piezoelectric ceramic according to one aspect of the present invention includes an element selected from a first transition element and a second transition element, an element selected from a first transition element and a third transition element, a second transition element and a third transition, respectively.
- An element selected from each element, or an element selected from each of a first transition element, a second transition element, and a third transition element is included.
- the piezoelectric ceramic component of FIG. 2 includes a plate-shaped piezoelectric ceramic layer 101, a first electrode 102, and a second electrode 103.
- the first electrode 102 and the second electrode 103 are disposed to face each other with the piezoelectric ceramic layer 101 interposed therebetween.
- the piezoelectric ceramic layer 101 is made of a piezoelectric ceramic according to an embodiment of the present invention.
- the piezoelectric ceramic layer 101 is made of LNKN in which a crystal phase represented by a composition formula Li 3 NbO 4 is precipitated.
- the piezoelectric ceramic layer 101 is manufactured by mixing a raw material mixed powder of piezoelectric ceramics with a binder, forming a molded body obtained by molding the mixture into a plate shape, and firing the molded body. Next, a conductive paste using a conductor such as Cu, Ag, Au, or Pt is applied to both surfaces of the piezoelectric ceramic layer 101, and this conductive paste is baked to form the first electrode 102 and the second electrode 103. Manufactured by forming. Since the piezoelectric ceramic layer 101 is densely fired at around 1000 ° C., it is excellent in mass productivity as compared with the case of using conventional LNKN that does not contain a Li 3 NbO 4 crystal phase.
- FIG. 3 is a schematic cross-sectional view showing a multilayer piezoelectric ceramic component according to an embodiment of the present invention.
- a laminated piezoelectric ceramic component according to an embodiment of the present invention includes a piezoelectric ceramic layer 101, a plurality of first electrodes 102, a plurality of second electrodes 103, and each of the first electrodes 102.
- a first terminal electrode 104 that is electrically connected and a second terminal electrode 105 that is electrically connected to each of the second electrodes 103 are included.
- Each of the first electrodes 102 is disposed opposite to the adjacent second electrode 103 with the piezoelectric ceramic layer 101 interposed therebetween.
- This multilayer piezoelectric ceramic component is used, for example, as a multilayer piezoelectric actuator. Since this piezoelectric ceramic layer 101 can be densely fired at around 1000 ° C., the multilayer piezoelectric ceramic component according to one embodiment of the present invention uses conventional LNKN that does not contain a Li 3 NbO 4 crystal phase. Compared to similar parts, it is excellent in mass productivity.
- FIG. 4 is a schematic diagram showing a piezoelectric surface acoustic wave filter (SAW filter) according to an embodiment of the present invention.
- a piezoelectric surface acoustic wave filter according to an embodiment of the present invention includes a substrate 106, a piezoelectric ceramic layer 101 formed on the substrate 106, and substantially the same plane as the piezoelectric ceramic layer 101 on the substrate 106.
- a first electrode 102 and a second electrode 103 arranged to face each other are provided. Since the piezoelectric ceramic layer 101 can be densely fired at around 1000 ° C., the piezoelectric surface acoustic wave filter according to one embodiment of the present invention uses a conventional LNKN that does not contain a Li 3 NbO 4 crystal phase. Compared to the same type of filter, it is excellent in mass productivity.
- FIG. 5 is a schematic cross-sectional view of a switch element using a bending type piezoelectric actuator according to an embodiment of the present invention.
- a switch element according to an embodiment of the present invention includes a substrate 106, a first electrode 102 formed on the substrate 106, a piezoelectric ceramic layer 101 formed on the first electrode 102, A second electrode 103 formed on the piezoelectric ceramic layer 101, an elastic body 107, and a contact 108 are provided. Since the piezoelectric ceramic layer 101 can be densely fired at around 1000 ° C., the switch element using the bending type piezoelectric actuator according to one embodiment of the present invention does not contain a Li 3 NbO 4 crystal phase. Compared to the same type of switch element using LNKN, it is excellent in mass productivity.
- Li 2 CO 3 commercially available Li 2 CO 3 was preliminarily pulverized with a ball mill for 24 hours to adjust the average particle size to 1 ⁇ m or less. Moreover, 0.2 mol of Li 2 CO 3 was weighed with respect to 100 mol of the main component LNKN as a starting material for precipitating the Li 3 NbO 4 crystal phase. Next, the weighed main component raw material and the raw material for precipitating the Li 3 NbO 4 crystal phase were wet mixed in a ball mill for about 24 hours to obtain a mixture. Next, this mixture was dried in an atmosphere of about 100 ° C. and then calcined at 700 ° C. to 1000 ° C. to obtain a calcined powder.
- this calcined powder was wet pulverized by a ball mill for about 24 hours and dried in an atmosphere at about 100 ° C. to obtain a pulverized powder.
- 0.1 mol, 0.25 mol, 0.50 mol, 1.00 mol of Ag 2 O was added to the obtained pulverized powder with respect to 100 mol of LNKN as a main component.
- Each was wet mixed in a ball mill for about 24 hours.
- each of the mixtures was dried in an atmosphere of about 100 ° C. to obtain four types of Ag 2 O mixed pulverized powders having different Ag 2 O contents.
- each of the piezoelectric ceramics on which the silver electrodes were formed was subjected to polarization treatment by applying an electric field of about 3 to 4 kV / mm, which is higher than the coercive electric field, in an insulating oil at a DC voltage for 15 minutes. . After that, each material was allowed to stand overnight, so that the piezoelectric ceramic sample No. 1-No. 6 was obtained. The piezoelectric ceramic sample No. thus produced was obtained. 1-No.
- the composition of 6 is as shown in Table 1.
- FIG. 6 is a graph showing the firing temperature dependence of the sintered density thus measured.
- the piezoelectric ceramic having the same composition as No. 1 it cannot be sintered densely unless the sintering temperature is increased to 1080 ° C., but sample No. 1 in which Li 2 CO 3 was excessively added was used. It can be seen that in the piezoelectric ceramic having the same composition as 2, the sintering proceeds from around 1000 ° C. and the sintering density is increased. In both cases, partial melting of the sample occurred when firing at a temperature of 1080 ° C. or higher. Therefore, it was judged that a uniform sintered body could not be obtained at 1080 ° C. or higher.
- sample Nos. 1-No. Whether or not 6 contains a Li 3 NbO 4 crystal phase was confirmed as follows. First, the electrode was peeled off from each sample and ground in ethanol using an agate mortar for 30 minutes. For each of the crushed samples, XRD was measured by X-ray diffraction. For this measurement, RINT-2500PC manufactured by Rigaku Corporation was used as an X-ray diffractometer, and measurement was performed by a concentration method. The radiation source was Cu—K ⁇ ray, the applied voltage was 50 kV, and the applied current was 100 mA. The 2 ⁇ / ⁇ method was used as the measurement method, and measurement was performed at intervals of 0.02 ° by the Fixed Time method within a range of 10 ° ⁇ 2 ⁇ ⁇ 60 °.
- FIG. 7 shows the sample No. measured in this way. 1 shows the X-ray diffraction profile of FIG. 2 shows the X-ray diffraction profile of 2.
- FIG. 7 shows an enlarged peak near the background in a diffraction profile satisfying 10 ° ⁇ 2 ⁇ ⁇ 35 °. As is clear from FIG. It was confirmed that the peak of Li 3 NbO 4 crystal phase indicated by ⁇ (star) appears in the profile of 2.
- FIG. 2 to No. 6 shows the X-ray diffraction profile of 6;
- the graph of reference symbol a in FIG. 2 is the profile of sample 3
- the graph of reference symbol c is the profile of sample 4
- the graph of reference symbol d is the profile of sample 5
- the graph of reference symbol e is the profile of sample 6. is there.
- the piezoelectric ceramic of containing the Ag 2 O it can be seen that the content of Ag 2 O is increasing precipitation amount of about Li 3 NbO 4 crystalline phase increases. Therefore, by containing Ag 2 O, the Li 3 NbO 4 crystal phase can be precipitated in the main phase LNKN.
- ⁇ 33 T / ⁇ 0 represents the relative dielectric constant after polarization in the direction in which an electric field is applied during polarization
- kp represents the electromechanical coupling constant in the radial direction of the disk-shaped piezoelectric ceramic after polarization
- 11 E indicates the Young's modulus in the direction perpendicular to the direction in which the electric field is applied during the polarization process
- d 31 indicates the piezoelectric constant in the direction perpendicular to the direction in which the electric field is applied during the polarization process
- d 33 indicates that the polarization process is in progress Shows the piezoelectric constant in the direction parallel to the direction in which the electric field was applied.
- Sample No. 1 The sample fired at 1000 ° C. 1 had a low resistivity, and dielectric breakdown occurred during the polarization treatment, so that the piezoelectric characteristics could not be evaluated.
- Sample No. Regarding No. 2 both the sample fired at 1000 ° C. and the sample fired at 1080 ° C. could be polarized. And even if it sinters at 1000 degreeC, sample No. 1 was confirmed to have high piezoelectric characteristics comparable to the sample fired at 1080 ° C. Therefore, for sample 2 which is an example of the present invention, Li 2 CO 3 is added in excess of the stoichiometric ratio of LNKN to precipitate a Li 3 NbO 4 crystal phase, thereby allowing dense sintering at around 1000 ° C. As a result, it was confirmed that the piezoelectric properties were not impaired as compared with the case of blending according to the stoichiometric ratio of LNKN (Sample 1).
- Sample No. for 3 to 6 it was confirmed that a sufficiently dense sintered body could be obtained when similarly sintered at 1000 ° C. Among these, sample no. In 3 and 4, it was confirmed that the Young's modulus decreased without impairing the electromechanical coupling constant, and the piezoelectric ceramic was more easily deformed. As a result, improvement of d 33 has been confirmed. And sample no. 5 also confirmed that the electromechanical coupling coefficient was not impaired. Sample No. For 6, the relative dielectric constant and the electromechanical coupling coefficient also decreased significantly, and the Young's modulus also increased, so that the piezoelectric constants of both d 31 and d 33 decreased significantly.
- the amount to contain Ag 2 O of the piezoelectric ceramic which contains the Ag 2 O, relative to LNKN as a main component is 100 mol, Ag 2 O converted at 0.1mol or more, 0.5 mol or less was found to be preferable.
- a composition formula ⁇ Li x [Na 1-y K y ] 1-x ⁇ a NbO 3 (wherein 0.0 ⁇ x ⁇ 0.20, 0 ⁇ y ⁇ 1, 1.0 ⁇ a ⁇ 1.01)
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Abstract
Description
102:第一の電極
103:第二の電極
104:第一の端子電極
105:第二の端子電極
106:基板
107:弾性体
108:接点
Claims (8)
- Li、Na、K、Nb及びOをその構成元素とするアルカリ含有ニオブ酸系ペロブスカイト構造を有する圧電セラミックスにおいて、組成式Li3NbO4で示される結晶相を保持することを特徴とする圧電セラミックス。
- 組成式{Lix[NayK1-y]1-x}aNbO3(但し、式中、0<x≦0.20、0≦y≦1、1.0≦a≦1.01である。)で示されることを特徴とする請求項1に記載の圧電セラミックス。
- AgをAg2O換算として請求項2に記載の圧電セラミックス100molに対して、0.1mol以上、0.5mol以下含有させたことを特徴とする請求項2の圧電セラミックス。
- 第一の電極と第二の電極とが圧電セラミックス層を介して対向する圧電セラミックス部品において、前記圧電セラミックス層が、請求項1~3のいずれか1項に記載の圧電セラミックスで形成されていることを特徴とする圧電セラミックス部品。
- 第一の電極と第二の電極とが圧電セラミックス層を介して交互に複数層積み重ねられており、前記第一の電極と電気的に接続する第一の端子電極と、前記第二の電極と電気的に接続する第二の端子電極とを有する圧電セラミックス部品において、前記圧電セラミックス層が、請求項1~3のいずれか1項に記載の圧電セラミックスで形成されていることを特徴とする圧電セラミックス部品。
- 圧電セラミックス層を有する基板を有し、その圧電セラミックス層の上部に第一の電極と第二の電極が対向して配置される圧電セラミックス部品において、前記圧電セラミックス層が、請求項1~3のいずれか1項に記載の圧電セラミックスで形成されていることを特徴とする圧電セラミックス部品。
- 第一の電極と第二の電極とが圧電セラミックス層を有する基板上に交互に複数層対向しており、前記第一の電極と電気的に接続する第一の端子電極と、前記第二の電極と電気的に接続する第二の端子電極とを有する圧電セラミックス部品において、前記圧電セラミックス層が、請求項1~3のいずれか1項に記載の圧電セラミックスで形成されていることを特徴とする圧電セラミックス部品。
- 請求項4~7のいずれか1項に記載の圧電セラミックス部品を用いたことを特徴とする圧電デバイス。
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| JP2012549728A JP5782457B2 (ja) | 2010-12-24 | 2011-12-13 | 圧電セラミックス、圧電セラミックス部品、及び該圧電セラミックス部品を用いた圧電デバイス |
| CN201180044864.8A CN103119002B (zh) | 2010-12-24 | 2011-12-13 | 压电陶瓷、压电陶瓷部件及使用该压电陶瓷部件的压电装置 |
| US13/876,453 US9537082B2 (en) | 2010-12-24 | 2011-12-13 | Piezoelectric ceramic, piezoelectric ceramic component, and piezoelectric device using such piezoelectric ceramic component |
| EP11850112.1A EP2676945B1 (en) | 2010-12-24 | 2011-12-13 | Piezoelectric ceramic, piezoelectric ceramic component, and piezoelectric device in which piezoelectric ceramic component is used |
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| US (1) | US9537082B2 (ja) |
| EP (1) | EP2676945B1 (ja) |
| JP (1) | JP5782457B2 (ja) |
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| JP2014043358A (ja) * | 2012-08-24 | 2014-03-13 | Taiyo Yuden Co Ltd | 圧電セラミックス及び圧電素子 |
| JP2015144285A (ja) * | 2015-02-18 | 2015-08-06 | 太陽誘電株式会社 | 圧電セラミックス及び圧電素子 |
| JP2021158249A (ja) * | 2020-03-27 | 2021-10-07 | 太陽誘電株式会社 | 圧電素子及びその製造方法 |
| WO2022097393A1 (ja) * | 2020-11-04 | 2022-05-12 | 太陽誘電株式会社 | 圧電素子及びその製造方法、並びに圧電振動装置 |
| WO2023112661A1 (ja) * | 2021-12-17 | 2023-06-22 | 太陽誘電株式会社 | 圧電/誘電体セラミックス、圧電素子及び発音体 |
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| US11889767B2 (en) * | 2019-03-14 | 2024-01-30 | Taiyo Yuden Co., Ltd. | Multilayer piezoelectric ceramic and method for manufacturing same, multilayer piezoelectric element, as well as piezoelectric vibration apparatus |
| RU2728056C1 (ru) * | 2019-07-24 | 2020-07-28 | федеральное государственное автономное образовательное учреждение высшего образования "Южный федеральный университет" | Бессвинцовый пьезоэлектрический керамический материал |
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| JP2015144285A (ja) * | 2015-02-18 | 2015-08-06 | 太陽誘電株式会社 | 圧電セラミックス及び圧電素子 |
| JP2021158249A (ja) * | 2020-03-27 | 2021-10-07 | 太陽誘電株式会社 | 圧電素子及びその製造方法 |
| US11997930B2 (en) | 2020-03-27 | 2024-05-28 | Taiyo Yuden Co., Ltd. | Piezoelectric element and method for manufacturing same |
| JP7548717B2 (ja) | 2020-03-27 | 2024-09-10 | 太陽誘電株式会社 | 圧電素子及びその製造方法 |
| WO2022097393A1 (ja) * | 2020-11-04 | 2022-05-12 | 太陽誘電株式会社 | 圧電素子及びその製造方法、並びに圧電振動装置 |
| WO2023112661A1 (ja) * | 2021-12-17 | 2023-06-22 | 太陽誘電株式会社 | 圧電/誘電体セラミックス、圧電素子及び発音体 |
| JP2023090233A (ja) * | 2021-12-17 | 2023-06-29 | 太陽誘電株式会社 | 圧電/誘電体セラミックス、圧電素子及び発音体 |
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| JP5782457B2 (ja) | 2015-09-24 |
| JPWO2012086449A1 (ja) | 2014-05-22 |
| US20130320815A1 (en) | 2013-12-05 |
| EP2676945A4 (en) | 2016-03-30 |
| EP2676945B1 (en) | 2019-11-20 |
| EP2676945A1 (en) | 2013-12-25 |
| CN103119002A (zh) | 2013-05-22 |
| CN103119002B (zh) | 2014-09-17 |
| US9537082B2 (en) | 2017-01-03 |
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