# US 2021/0241946 A1 · Composite, and structure and thermistor using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0241946 A1 - Document ID: US20210241946A1 - Status: Published application - Kind: A1 - Application number: 17/237,456 - Filed: 2021-04-22 - Published: 2021-08-05 - Earliest claimed: 2018-12-28 - Assignees: Murata Manufacturing Co., Ltd. - Applicants: Murata Manufacturing Co., Ltd. - Inventors: Shuichi Funahashi - Web page: https://patentgrep.com/patent/US20210241946A1 ## CPC - H01C 7/043: {Oxides or oxidic compounds} - H01C 7/049: {mainly consisting of organic or organo-metal substances} - G05D 23/24: the sensing element having a resistance varying with temperature, e.g. a thermistor - H01C 17/06533: {composed of oxides} - H01C 17/06586: {composed of organic material} - H01C: RESISTORS - G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES ## Abstract A composite that includes multiple first metal oxide particles containing at least one metal element that is at least one of Mn or Ni, and a first amorphous phase between the multiple first metal oxide particles and which contains the at least one first metal element. ## Claims ### Claim 1 A composite comprising: a plurality of first metal oxide particles containing at least one first metal element that is at least one of Mn or Ni; and a first amorphous phase between the plurality of first metal oxide particles and contains the at least one first metal element. ### Claim 2 (depends on 1) The composite according to claim 1, wherein the first metal element further includes at least one selected from the group consisting of Fe, Al, Co, and Cu. ### Claim 3 (depends on 1) The composite according to claim 1, further comprising a plurality of first resin particles, and wherein the first amorphous phase is between the plurality of first metal oxide particles and the plurality of first resin particles. ### Claim 4 (depends on 3) The composite according to claim 3, wherein the plurality of first resin particles comprise at least one selected from the group consisting of polyethylene terephthalate, polyetherimide, polyamide-imides, polyimides, polytetrafluoroethylene, epoxy resins, and liquid crystal polymers. ### Claim 5 (depends on 1) The composite according to claim 1, wherein the first amorphous phase has a thickness of 100 μm or less. ### Claim 6 (depends on 1) The composite according to claim 1, wherein at least some of the plurality of first metal oxide particles are in direct contact with each other. ### Claim 7 A composite comprising: a plurality of first metal oxide particles that are in direct contact with each other, the plurality of first metal oxide particles containing at least one first metal element that is at least one of Mn or Ni; a plurality of first resin particles inside the plurality of first metal oxide particles that are in direct contact with each other; and a first amorphous phase between the plurality of first metal oxide particles that are in direct contact with each other and the first resin particles, the first amorphous phase containing the at least one first metal element. ### Claim 8 (depends on 7) The composite according to claim 7, wherein the first metal element further includes at least one selected from the group consisting of Fe, Al, Co, and Cu. ### Claim 9 (depends on 7) The composite according to claim 7, wherein the plurality of first resin particles comprise at least one selected from the group consisting of polyethylene terephthalate, polyetherimide, polyamide-imides, polyimides, polytetrafluoroethylene, epoxy resins, and liquid crystal polymers. ### Claim 10 (depends on 7) The composite according to claim 7, wherein the first amorphous phase has a thickness of 100 μm or less. ### Claim 11 (depends on 7) A structure comprising: a metal component that contains at least one second metal element; the composite according to claim 7; and a bonding layer between the metal component and the composite, wherein the bonding layer includes a second amorphous phase that contains the at least one first metal element and the at least one second metal element. ### Claim 12 (depends on 11) The structure according to claim 11, wherein the second metal element includes at least one selected from the group consisting of Mn, Ni, Fe, Al, Zn, Cr, Ti, Co, Cu, Ag, Au, and Pt. ### Claim 13 (depends on 11) A thermistor comprising: a resin substrate made of at least one second resin; and the structure according to claim 11 on the resin substrate, wherein the metal component includes two metal electrodes. ### Claim 14 (depends on 1) A structure comprising: a metal component that contains at least one second metal element; the composite according to claim 1; and a bonding layer between the metal component and the composite, wherein the bonding layer includes a second amorphous phase that contains the at least one first metal element and the at least one second metal element. ### Claim 15 (depends on 14) The structure according to claim 14, wherein the second metal element includes at least one selected from the group consisting of Mn, Ni, Fe, Al, Zn, Cr, Ti, Co, Cu, Ag, Au, and Pt. ### Claim 16 (depends on 14) A thermistor comprising: a resin substrate made of at least one second resin; and the structure according to claim 14 on the resin substrate, wherein the metal component includes two metal electrodes. ### Claim 17 (depends on 16) The thermistor according to claim 16, wherein the composite and the bonding layer have a combined thickness of 100 μm or less. ### Claim 18 (depends on 16) The thermistor according to claim 16, wherein the second resin includes at least one selected from the group consisting of polyethylene terephthalate, polyetherimide, polyamide-imides, polyimides, polytetrafluoroethylene, epoxy resins, and liquid crystal polymers. ### Claim 19 (depends on 16) The thermistor according to claim 16, wherein each of the two metal electrodes have a respective primary surface that face each other, and the composite is interposed between the respective primary surfaces of the two metal electrodes. ### Claim 20 (depends on 16) The thermistor according to claim 16, wherein the two metal electrodes are electrically coupled, respectively, to two outer electrodes that are positioned opposite to each other in a plan view of the thermistor.