Ceramic composition, electronic component, and method for manufacturing ceramic composition

Abstract

Provided is a ceramic composition enabling a lower sintering temperature (or firing temperature), an electronic component, and a method for manufacturing the ceramic composition. A ceramic composition of the present disclosure comprises an oxide containing Mn and Ni elements, and contains all of Li, Na, and K elements.

Description

Ceramic composition, electronic component, and method for producing ceramic composition

[0001] The present disclosure relates to ceramic compositions, electronic components, and methods for making ceramic compositions.

[0002] Patent Document 1 discloses a cobalt-free NTC ceramic containing Ni and Mn and including a spinel component.

[0003] Special Publication No. 2013-534508

[0004] The cobalt-free NTC ceramic described in Patent Document 1 is manufactured by sintering. Specifically, the sintering process described in Patent Document 1 is disclosed as being performed at 1210°C for 2 hours, followed by stepwise cooling at 1000°C for 2 hours, 800°C for 2 hours, 700°C for 2 hours, and 600°C for 3 hours (paragraph

[0050] of Patent Document 1).

[0005] However, in some cases, it is desirable to lower the sintering temperature (or firing temperature) in the process of producing ceramics. For example, when producing ceramics, it has not been possible to use materials that melt at sintering temperatures of around 1200°C.

[0006] Therefore, the present disclosure has been made in view of the above-mentioned problems. That is, a main object of the present disclosure is to provide a ceramic composition, an electronic component, and a method for producing a ceramic composition, which are capable of lowering the sintering temperature (or firing temperature).

[0007] The ceramic composition according to the present disclosure is a ceramic composition containing an oxide containing Mn and Ni elements, and also contains all of Li, Na, and K elements.

[0008] The method for producing a ceramic composition according to the present disclosure includes a heating and pressing step of mixing the oxide with an additive containing all of the Li element, the Na element, and the K element, and then heating and pressing the mixture.

[0009] The electronic component according to the present disclosure uses the ceramic composition described above.

[0010] According to the present disclosure, since the ceramic composition contains an oxide containing Mn and Ni elements, as well as Li, Na, and K, it is possible to lower the sintering temperature (or firing temperature) in the production process of the ceramic composition.

[0011] FIG. 1 is a perspective view of an electronic component using the ceramic composition of the present disclosure. FIG. 2 is a schematic cross-sectional view of an electronic component using the ceramic composition of the present disclosure. FIG. 3A is a schematic cross-sectional view of a manufacturing process (heating and pressing process) of the ceramic composition of the present disclosure. FIG. 3B is a schematic cross-sectional view of a manufacturing process (heating and pressing process) of the ceramic composition of the present disclosure. FIG. 4 is an SEM photograph of the ceramic composition of the present disclosure. FIG. 5 is a table showing the results of a demonstration test on the ceramic composition of the present disclosure.

[0012] The ceramic composition, electronic component, and method for manufacturing the ceramic composition according to the present disclosure will be described in detail below. While the description will be made with reference to drawings as necessary, the contents shown in the drawings are merely shown as schematic examples for the purpose of understanding the present disclosure, and the appearance, dimensional ratios, etc. may differ from the actual products.

[0013] <Description of Electronic Component According to the Present Disclosure> First, an electronic component 1 according to the present disclosure will be described. Hereinafter, the electronic component 1 will be described using a multilayer thermistor as an example.

[0014] The electronic component 1 (multilayer thermistor) has a rectangular parallelepiped ceramic body 10 and external electrodes E (see FIG. 1).

[0015] (1) Ceramic Body The ceramic body 10 includes a plurality of stacked ceramic layers 10s and a plurality of internal electrode layers 20 (see FIG. 2). The ceramic layers 10s include the ceramic composition of the present disclosure. Details of the ceramic composition of the present disclosure will be described later.

[0016] The ceramic body 10 has a first main surface 11 and a second main surface 12 that face each other in a height direction T, a first end surface 13 and a second end surface 14 that face each other in a length direction L that is perpendicular to the height direction T, and a first side surface 15 and a second side surface 16 that face each other in a width direction W that is perpendicular to the length direction L and the height direction T. In the example shown in FIG. 1 , the first main surface 11 of the ceramic body 10 corresponds to the mounting surface (bottom surface) of the ceramic body 10. Note that the second main surface 12 may also be the mounting surface of the ceramic body 10. The dimensions of the ceramic body 10 are not particularly limited. Furthermore, the dimension of the ceramic body 10 in the length direction L is not necessarily longer than the dimension in the width direction W.

[0017] It is preferable that the corners and ridges of the ceramic body 10 are rounded. Note that the corners refer to portions where three adjacent faces of the ceramic body 10 intersect, and the ridges refer to portions where two adjacent faces of the ceramic body 10 intersect.

[0018] A plurality of internal electrode layers 20 are provided inside the ceramic body 10. For example, the ceramic body 10 has a plurality of first internal electrode layers 21 and a plurality of second internal electrode layers 22 each having a substantially rectangular shape (see FIG. 2). The first internal electrode layers 21 and the second internal electrode layers 22 may be embedded so as to be alternately stacked at equal intervals with the ceramic layers 10s sandwiched between them along the height direction T of the ceramic body 10.

[0019] The first internal electrode layer 21 has a first opposing electrode portion 21a opposing the second internal electrode layer 22, and a first extracted electrode portion 21b located on one end side of the first internal electrode layer 21 and extending from the first opposing electrode portion 21a to the first end surface 13 of the ceramic body 10 (see FIG. 2). The end of the first extracted electrode portion 21b may be extracted to the first end surface 13 and exposed. Note that the "one end side" referred to in this specification refers to the side in the same direction as the longitudinal direction L shown in FIG. 2.

[0020] The second internal electrode layer 22 has a second opposing electrode portion 22a opposing the first internal electrode layer 21, and a second extracted electrode portion 22b located on the other end side of the second internal electrode layer 22 and extending from the second opposing electrode portion 22a to the second end surface 14 of the ceramic body 10 (see FIG. 2). The end of the second extracted electrode portion 22b may be extracted to the second end surface 14 and exposed. Note that the other end side in this specification refers to the side opposite to the length direction L shown in FIG. 2.

[0021] (2) External Electrodes External electrodes E are disposed on the first end face 13 and the second end face 14 of the ceramic body 10. The external electrodes E include a first external electrode E1 and a second external electrode E2 (see FIGS. 1 and 2).

[0022] The first external electrode E1 is disposed on the surface of the first end face 13 of the ceramic body 10, and extends from the first end face 13 to cover a portion of each of the first main face 11, the second main face 12, the first side face 15, and the second side face 16 (see FIGS. 1 and 2). In this case, the first external electrode E1 is electrically connected to the first extraction electrode portion 21b of the first internal electrode layer 21.

[0023] The second external electrode E2 is disposed on the surface of the second end face 14 of the ceramic body 10, and extends from the second end face 14 to cover a portion of each of the first main face 11, the second main face 12, the first side face 15, and the second side face 16 (see FIGS. 1 and 2). In this case, the second external electrode E2 is electrically connected to the second extraction electrode portion 22b of the second internal electrode layer 22.

[0024] Such an electronic component can exhibit the characteristics of a thermistor by changing the electrical resistance of the ceramic body 10 in accordance with the temperature around the electronic component 1. Alternatively, the characteristics of a capacitor may be exhibited by obtaining capacitance between the first internal electrode layer 21 electrically connected to the first external electrode E1 and the second internal electrode layer 22 electrically connected to the second external electrode E2. Furthermore, the electronic component may be an electronic component other than a thermistor or a capacitor.

[0025] <Description of Ceramic Composition of the Present Disclosure> Next, the ceramic composition of the present disclosure will be described. The ceramic composition of the present disclosure contains an oxide containing Mn (manganese) and Ni (nickel), as well as all of Li (lithium), Na (sodium), and K (potassium). As used herein, "oxide" refers to a compound containing at least Mn, Ni, and oxygen. Impurities other than Mn, Ni, and oxygen that are unavoidable during production may also be included. Furthermore, as long as the ceramic composition of the present disclosure contains an oxide containing at least Mn and Ni, as well as all of Li, Na, and K, it may also contain impurities other than these elements that are unavoidable during production.

[0026] According to the present disclosure, the ceramic composition contains an oxide containing at least Mn and Ni, and all of Li, Na, and K, and therefore can be sintered (or fired) at a temperature lower than the sintering temperature (1210°C) described in Patent Document 1, which is known as prior art. Evaluation results of the ceramic composition of the present disclosure will be described in detail in the Examples below. Note that, as used herein, "sintering (or firing)" refers to heating a metal or ceramic powder material to bond the powder particles and induce shrinkage.

[0027] In a preferred embodiment of the ceramic composition, the oxide containing Mn and Ni elements may have a spinel structure. ２ X ４ (A and B are electropositive elements, and X is an electronegative element), and it is intended that X is arranged in a nearly cubic close-packed arrangement, with A occupying the tetrahedral voids and B occupying the octahedral voids. By using the oxide with a spinel structure of the present disclosure, the ceramic composition can have a dense structure.

[0028] Furthermore, in the ceramic composition of the present disclosure, the molar contents of the Li, Na, and K elements may satisfy the following relationships: (molar content of Li) > (molar content of Na) and (molar content of Na) > (molar content of K). As used herein, "molar content" refers to the molar fraction obtained by dividing the total number of moles of the entire metal material by the number of moles of each element, multiplied by 100, and is expressed as "mol%." The molar content of each element can be measured by compositional analysis such as inductively coupled plasma (ICP) emission spectroscopy. For simplicity, data analysis such as powder X-ray diffraction (XRD) can also be used. Such a relationship between the molar contents of the Li, Na, and K elements allows the ceramic composition to be a dense ceramic. Evaluation of the compactness of the ceramic composition (density measurement) will be described in detail in the Examples below.

[0029] In the ceramic composition of the present disclosure, the number of moles of Li element may be 2.62 mol or more and 17.06 mol or less, more preferably 8.50 mol or more and 10.50 mol or less, when the total of Mn element and Ni element is 100 mol.

[0030] In the ceramic composition of the present disclosure, the number of moles of Na element may be 0.42 mol or more and 6.09 mol or less, more preferably 1.50 mol or more and 4.00 mol or less, when the total of Mn element and Ni element is 100 mol.

[0031] In the ceramic composition of the present disclosure, the number of moles of K element may be 0.03 mol or more and 4.87 mol or less, more preferably 0.05 mol or more and 3.00 mol or less, when the total of Mn element and Ni element is 100 mol.

[0032] The ceramic composition can be made into a dense ceramic if it has such a relationship between the molar contents of Li, Na, and K. The evaluation of the degree of denseness of the ceramic composition (measurement of density) will be described in detail in the Examples below.

[0033] The ceramic composition of the present disclosure may also contain a salt of any of the elements Li, Na, and K. In this specification, the term "salt" refers to a compound formed by an ionic bond between an anion produced by ionization of an acid and a cation produced by ionization of a base. As an example, the salt of the present disclosure may include a carbonate. Therefore, since the ceramic composition of the present disclosure contains all of the elements Li, Na, and K, as well as a salt of any of the elements Li, Na, and K, it can be sintered (or fired) at a temperature lower than the sintering temperature (1210°C) described in Patent Document 1.

[0034] In a preferred embodiment of the salt contained in the ceramic composition, the salt may be a carbonate. More specifically, LiCO ３ , NaCO ３ , K.C.O. ３ When such a carbonate is contained, it is possible to realize a dense ceramic composition while reducing the sintering (or firing) temperature.

[0035] <Description of Method for Producing Ceramic Composition of the Present Disclosure> Next, the method for producing the ceramic composition of the present disclosure will be described in detail. The method for producing the ceramic composition of the present disclosure includes at least a material preparation step and a heating and pressurizing step.

[0036] (1) Material Preparation Step First, raw materials for the ceramic composition are prepared. The main components include Mn and Ni. However, impurities other than Mn and Ni that are unavoidable in the manufacturing process may also be included. Usually, the main components of the raw materials are essentially oxides of Mn and Ni (ideally, NiMn ２ O ４ The raw material may be NMO powder, which is a material with a spinel structure.

[0037] Here, the molar contents of the Mn element and the Ni element may be 1.95 or more and 4.00 or less, as shown in FIG. 5 described later.

[0038] Next, raw materials for the additive are prepared. The additive contains all of the elements Li, Na, and K as main components. However, the additive may contain impurities other than the elements Li, Na, and K that are unavoidable in the manufacturing process. For example, Li ２ CO ３ , Na ２ CO ３ , K. ２ CO ３ may be used.

[0039] Here, the molar contents of the Li element, Na element, and K element may satisfy the relationship of Li element molar content > Na element molar content and Na element molar content > K element, as shown in Fig. 5 described later. They may be weighed using an electronic balance or the like so as to satisfy such molar content relationships.

[0040] Then, the prepared raw materials for the ceramic composition and the raw materials for the additives are mixed to prepare a mixed powder that will be the raw material.

[0041] (2) Heating and Pressing Step As shown in FIG. 3A, the prepared mixed powder MP is filled into a mold K (e.g., φ10 mm), and as shown in FIG. 3B, the mixed powder MP is sandwiched between clamping members C from above and below. The mold K containing the mixed powder MP is then placed in a hot press device, and heating and pressing are performed at a predetermined pressure and temperature. This heating and pressing causes the additive compounds containing Li, Na, and K to undergo a eutectic reaction to form a eutectic compound. This eutectic compound has a low melting point and forms a liquid phase. This liquid phase then diffuses into the oxides of Mn and Ni that have been dissolved by the heating and pressing, promoting reprecipitation between particles.

[0042] After the heating and pressing is completed, the mixture is cooled to room temperature, whereby a dense ceramic composition (see FIG. 4 for an example) can be produced.

[0043] As described above, the method for producing a ceramic composition according to the present disclosure includes a heating and pressurizing step in which an oxide is mixed with additives containing all of the elements Li, Na, and K, and then the mixture is heated and pressurized. This allows the composition to be sintered (or fired) at a temperature lower than the sintering temperature (1210°C) described in Patent Document 1, which is known as prior art.

[0044] As a preferred heating condition for the heating and pressing step, the heating and pressing step may be carried out at a temperature of 100° C. or higher and 900° C. or lower. More preferably, the heating and pressing step is carried out at a temperature of 100° C. or higher and 400° C. or lower. This allows the ceramic composition manufacturing method of the present disclosure to further lower the sintering temperature (or firing temperature) in the ceramic composition manufacturing process.

[0045] The heating and pressing step may be performed under pressure conditions of 300 MPa or more and 400 MPa or less. Setting the pressure in this manner allows for the production of a dense ceramic composition. The heating and pressing time in the heating and pressing step may be 3 hours or more and 5 hours or more. Setting the heating and pressing time in this manner allows for the ceramic composition to be appropriately sintered (or fired).

[0046] Demonstration tests for the ceramic compositions of the present disclosure will be described in detail below. Specifically, the ceramic compositions described in Examples 1 to 12 and Comparative Examples 1 to 3 below were produced (see FIG. 5).

[0047] The method for producing the ceramic composition was as described above in the "Description of the Method for Producing the Ceramic Composition of the Present Disclosure," and the heating and pressurizing step involved heating and pressurizing at 400°C, 350 MPa, and 4 hours. The ceramic composition had a cylindrical shape with a diameter of 10 mm and a volume of 0.108 to 0.141 cm. ３ It was decided.

[0048] Example 1 Spinel structure material: Ni element: 28.53 mol, Mn element: 57.02 mol Additive material: Li element: 8.88 mol, Na element: 3.19 mol, K element: 2.37 mol

[0049] Example 2 Spinel structure material: Ni element: 28.50 mol, Mn element: 57.00 mol Additive material: Li element: 8.90 mol, Na element: 3.21 mol, K element: 2.39 mol

[0050] Example 3 Spinel structure material: Ni element: 29.79 mol, Mn element: 59.31 mol Additive material: Li element: 7.87 mol, Na element: 1.84 mol, K element: 1.20 mol

[0051] Example 4 Spinel structure material: Ni element: 30.13 mol, Mn element: 59.26 mol Additive material: Li element: 7.84 mol, Na element: 1.83 mol, K element: 0.95 mol

[0052] Example 5 Spinel structure material: Ni element: 30.24 mol, Mn element: 60.15 mol Additive material: Li element: 7.87 mol, Na element: 1.57 mol, K element: 0.17 mol

[0053] Example 6 Spinel structure material: Ni element: 32.14 mol, Mn element: 63.93 mol Additive material: Li element: 3.28 mol, Na element: 0.55 mol, K element: 0.11 mol

[0054] Example 7 Spinel structure material: Ni element: 17.17 mol, Mn element: 68.27 mol Additive material: Li element: 8.94 mol, Na element: 3.21 mol, K element: 2.41 mol

[0055] Example 8 Spinel structure material: Ni element: 19.28 mol, Mn element: 76.66 mol Additive material: Li element: 3.38 mol, Na element: 0.56 mol, K element: 0.11 mol

[0056] Example 9 Spinel structure material: Ni element: 31.99 mol, Mn element: 63.93 mol Additive material: Li element: 3.32 mol, Na element: 0.67 mol, K element: 0.09 mol

[0057] Example 10 Spinel structure material: Ni element: 27.37 mol, Mn element: 54.70 mol Additive material: Li element: 11.99 mol, Na element: 3.65 mol, K element: 2.30 mol

[0058] Example 11 Spinel structure material: Ni element: 32.35 mol, Mn element: 64.66 mol Additive material: Li element: 2.54 mol, Na element: 0.41 mol, K element: 0.03 mol

[0059] Example 12 Spinel structure material: Ni element: 26.05 mol, Mn element: 52.06 mol Additive material: Li element: 13.32 mol, Na element: 4.76 mol, K element: 3.81 mol

[0060] Comparative Example 1 Spinel structure material: Ni element: 29.20 mol, Mn element: 58.40 mol Additive material: Li element: 9.12 mol, Na: 3.28 mol, K: 0.00 mol

[0061] Comparative Example 2: Spinel structure material: Ni element: 31.28 mol, Mn element: 62.57 mol; Additive material: Li element: 0.00 mol, Na element: 3.51 mol, K element: 2.63 mol

[0062] Comparative Example 3: Spinel structure material: Ni element: 29.44 mol, Mn element: 58.88 mol; Additive material: Li element: 9.19 mol, Na element: 0.00 mol, K element: 2.48 mol

[0063] Here, in FIG. 5, "moles of additives when Ni + Mn is 100 mol" refers to the number of moles of Li, Na, and K when Ni (28.53 mol) + Mn (57.02 mol) is converted to 100 mol, as an example, in the case of Example 1. Specifically, it indicates the value (10.38 mol) obtained by multiplying Li (8.88 mol%) by 1.16 (100 / (28.53 + 57.02)), the value (3.73 mol) obtained by multiplying Na (3.19 mol%) by 1.16, and the value (2.77 mol) obtained by multiplying K (2.37 mol%) by 1.16. Similar calculations were performed for Examples 2 to 12 and Comparative Examples 1 to 3.

[0064] Furthermore, according to FIG. 5, the ceramic compositions of Examples 1 to 13 have a ratio (Mn / Ni) of the molar content of Mn element, which is a material of the spinel structure, to the molar content of Ni element, of 1.95 or more and 4.00 or less.

[0065] Furthermore, according to FIG. 5 , the ceramic compositions of Examples 1 to 13 satisfy the conditions that the molar content of Li element is greater than the molar content of Na element, and that the molar content of Na element is greater than the molar content of K element. More specifically, when K element, which has the lowest molar content among Li element, Na element, and K element, is used as the reference, the Li element / K element ratio is 3.5 or more and 85.0 or less, and the Na element / K element ratio is 1.2 or more and 14.0 or less.

[0066] The relative density of the ceramic compositions described in Examples 1 to 12 and Comparative Examples 1 to 3 was calculated to evaluate the denseness of the ceramic compositions.

[0067] [Evaluation of Relative Density] Dimensional Measurement The diameter and thickness of the ceramic compositions described in Examples 1 to 12 and Comparative Examples 1 to 3 were measured with a micrometer. The volume (cm ３ The results of the dimension measurements are shown in Figure 5.

[0068] Mass Measurement The mass (g) of each of the ceramic compositions described in Examples 1 to 12 and Comparative Examples 1 to 3 was measured using an electronic balance. The results of the mass measurement are shown in FIG.

[0069] Calculation of relative density The mass (g) of the ceramic composition obtained by mass measurement was multiplied by the volume (cm) of the ceramic composition obtained by dimensional measurement. ３ ) to obtain the absolute density (g / cm ３ The calculated absolute density is used to calculate the relative density (= absolute density / true density). ２ O ４ The theoretical value of 5.2 g / cm ３ The calculation results of the relative density are shown in Figure 5.

[0070] The ceramic compositions described in Examples 1 to 12, which contained all of the elements Li, Na, and K as additives, had a relative density of 70% or more and were dense. On the other hand, the ceramic compositions described in Comparative Examples 1 to 3, which did not contain any of the elements Li, Na, and K, had a relative density of less than 70% and were coarser than the ceramic compositions described in Examples 1 to 12.

[0071] As a more preferable ceramic composition, as in Examples 1 to 5 and 7, when the metal elements constituting the spinel are taken as 100 mol, the number of moles of Li element is 8.50 mol or more and 10.50 mol or less, the number of moles of Na element is 1.50 mol or more and 4.00 mol or less, and the number of moles of K element is 0.05 mol or more and 3.00 mol or less, the relative density is 83% or more, and a denser ceramic composition can be produced.

[0072] It should be noted that the embodiments disclosed herein are illustrative in all respects and are not intended to be limiting. Therefore, the technical scope of the present disclosure should not be interpreted solely by the above-described embodiments, but should be defined based on the claims. The technical scope of the present disclosure also includes all modifications within the scope and meaning equivalent to the claims.

[0073] The ceramic composition, electronic component, and method for manufacturing the ceramic composition according to the present disclosure are as follows: <1> A ceramic composition containing an oxide containing Mn and Ni, the ceramic composition containing all of Li, Na, and K. <2> The ceramic composition according to <1>, in which the oxide has a spinel structure. <3> The ceramic composition according to <1> or <2>, in which the molar content of Li > the molar content of Na, and the molar content of Na > the molar content of K are satisfied. <4> The ceramic composition according to any one of <1> to <3>, in which the number of moles of Li is 2.62 mol or more and 17.06 mol or less when the total of the Mn and Ni is 100 mol. <5> The ceramic composition according to any one of <1> to <4>, wherein, when the total amount of the Mn element and the Ni element is taken as 100 mol, the number of moles of the Na element is 0.42 mol or more and 6.09 mol or less. <6> The ceramic composition according to any one of <1> to <5>, wherein, when the total amount of the Mn element and the Ni element is taken as 100 mol, the number of moles of the K element is 0.03 mol or more and 4.87 mol or less. <7> The ceramic composition according to any one of <1> to <6>, wherein the oxide has a spinel structure, and, when the total amount of metal elements constituting the spinel is taken as 100 mol, the number of moles of the Li element is 2.62 mol or more and 17.06 mol or less, the number of moles of the Na element is 0.42 mol or more and 6.09 mol or less, and the number of moles of the K element is 0.03 mol or more and 4.87 mol or less. <8> The ceramic composition according to <7>, wherein, when the metal elements constituting the spinel are taken as 100 mol, the number of moles of the Li element is 8.50 mol or more and 10.50 mol or less, the number of moles of the Na element is 1.50 mol or more and 4.00 mol or less, and the number of moles of the K element is 0.05 mol or more and 3.00 mol or less.<9> The ceramic composition according to any one of <1> to <8>, containing a salt of any one of the Li element, the Na element, and the K element. <10> The ceramic composition according to <9>, wherein the salt is a carbonate. <11> A method for producing the ceramic composition according to any one of <1> to <10>, comprising a heating and pressing step of mixing the oxide with an additive containing all of the Li element, the Na element, and the K element, followed by heating and pressing. <12> A method for producing the ceramic composition according to <11>, wherein the heating and pressing step is carried out at a temperature of 100°C or higher and 900°C or lower. <13> An electronic component using the ceramic composition according to any one of <1> to <10>.

[0074] The ceramic composition of the present disclosure can be used as an electronic component with a lower sintering temperature (or firing temperature).

[0075] 1 Electronic component 10 Ceramic body 10s Ceramic layer 11 First main surface 12 Second main surface 13 First end surface 14 Second end surface 15 First side surface 16 Second side surface 20 Internal electrode layer 21 First internal electrode layer 21a First counter electrode section 21b First extraction electrode section 22 Second internal electrode layer 22a Second counter electrode section 22b Second extraction electrode part E External electrode E1 First external electrode E2 Second external electrode MP Mixed powder K Mold C Holding member

Claims

1. A ceramic composition containing an oxide containing Mn and Ni elements, which also contains Li, Na and K elements.

2. The ceramic composition of claim 1, wherein the oxide is composed of a spinel structure.

3. The ceramic composition according to claim 1 or 2, wherein the molar content of the Li element is greater than the molar content of the Na element, and the molar content of the Na element is greater than the molar content of the K element.

4. The ceramic composition according to any one of claims 1 to 3, wherein the number of moles of the Li element is 2.62 mol or more and 17.06 mol or less when the total of the Mn element and the Ni element is 100 mol.

5. The ceramic composition according to any one of claims 1 to 4, wherein the number of moles of the Na element is 0.42 mol or more and 6.09 mol or less when the total of the Mn element and the Ni element is 100 mol.

6. The ceramic composition according to any one of claims 1 to 5, wherein the number of moles of the K element is 0.03 mol or more and 4.87 mol or less when the total of the Mn element and the Ni element is 100 mol.

7. A ceramic composition according to any one of claims 1 to 6, wherein the oxide has a spinel structure, and when the metal elements constituting the spinel are taken as 100 mol, the number of moles of the Li element is 2.62 mol or more and 17.06 mol or less, the number of moles of the Na element is 0.42 mol or more and 6.09 mol or less, and the number of moles of the K element is 0.03 mol or more and 4.87 mol or less.

8. The ceramic composition according to claim 7, wherein, when the metal elements constituting the spinel are taken as 100 mol, the number of moles of the Li element is 8.50 mol or more and 10.50 mol or less, the number of moles of the Na element is 1.50 mol or more and 4.00 mol or less, and the number of moles of the K element is 0.05 mol or more and 3.00 mol or less.

9. The ceramic composition according to any one of claims 1 to 8, which contains a salt of any one of the Li element, the Na element, and the K element.

10. The ceramic composition of claim 9, wherein the salt is a carbonate.

11. A method for producing a ceramic composition according to any one of claims 1 to 10, comprising a heating and pressurizing step of mixing the oxide with an additive containing all of the Li element, the Na element, and the K element, and then heating and pressurizing the mixture.

12. The method for producing a ceramic composition according to claim 11, wherein the heating and pressing step is carried out at a temperature of 100°C or higher and 900°C or lower.

13. An electronic component using the ceramic composition according to any one of claims 1 to 10.

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