JPS6439002A - Manufacture of barium titanate semiconductor - Google Patents
Manufacture of barium titanate semiconductorInfo
- 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
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.
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)
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 |
-
1987
- 1987-08-05 JP JP19594687A patent/JPS6439002A/en active Pending
Cited By (3)
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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