JPS6439002A - Manufacture of barium titanate semiconductor - Google Patents

Manufacture of barium titanate semiconductor

Info

Publication number
JPS6439002A
JPS6439002A JP19594687A JP19594687A JPS6439002A JP S6439002 A JPS6439002 A JP S6439002A JP 19594687 A JP19594687 A JP 19594687A JP 19594687 A JP19594687 A JP 19594687A JP S6439002 A JPS6439002 A JP S6439002A
Authority
JP
Japan
Prior art keywords
less
barium titanate
resistance
room temperature
change
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP19594687A
Other languages
Japanese (ja)
Inventor
Susumu Matsushima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP19594687A priority Critical patent/JPS6439002A/en
Publication of JPS6439002A publication Critical patent/JPS6439002A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
    • H01C7/022—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances
    • H01C7/023—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient mainly consisting of non-metallic substances containing oxides or oxidic compounds, e.g. ferrites
    • H01C7/025—Perovskites, e.g. titanates

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Thermistors And Varistors (AREA)

Abstract

PURPOSE:To enable rate of change in resistance at room temperature to be kept less than 5%, by adding Y2O3 with the maximum particle diameter thereof being so controlled as to be less than 3mum, and by varying an added amount of Mn within the specific range. CONSTITUTION:The maximum particle diameter of Y2O3 is so controlled as to be less than 3mum, which enables rate of change in resistance value at room temperature to be small, especially to be kept within 5%. Then, in order to keep the rate of change thereof within 5%, an added amount of Mn is limited within 0.02mol. When the added amount of Mn is less than 0.0004mol, the maximum resistance value resulting from both the resistance at room temperature and the self-heating resistance does not reach 10<14>OMEGA, thereby the characteristics as a barium titanate series PCT thermistor can not be obtained. Consequently, Mn is made to be added in the range of 0.0005-0.002mol, which enables the barium titanate type PCT thermistor having good characteristics to be produced.
JP19594687A 1987-08-05 1987-08-05 Manufacture of barium titanate semiconductor Pending JPS6439002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19594687A JPS6439002A (en) 1987-08-05 1987-08-05 Manufacture of barium titanate semiconductor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19594687A JPS6439002A (en) 1987-08-05 1987-08-05 Manufacture of barium titanate semiconductor

Publications (1)

Publication Number Publication Date
JPS6439002A true JPS6439002A (en) 1989-02-09

Family

ID=16349603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19594687A Pending JPS6439002A (en) 1987-08-05 1987-08-05 Manufacture of barium titanate semiconductor

Country Status (1)

Country Link
JP (1) JPS6439002A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH057502A (en) * 1990-01-30 1993-01-19 Raichle Sportschuh Ag Ski boots
WO1994003909A1 (en) * 1992-07-30 1994-02-17 Kabushiki Kaisha Komatsu Seisakusho Positive temperature coefficient thermistor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH057502A (en) * 1990-01-30 1993-01-19 Raichle Sportschuh Ag Ski boots
WO1994003909A1 (en) * 1992-07-30 1994-02-17 Kabushiki Kaisha Komatsu Seisakusho Positive temperature coefficient thermistor
GB2285536A (en) * 1992-07-30 1995-07-12 Komatsu Mfg Co Ltd Positive temperature coefficient thermistor

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