Thermistor sintered body and temperature sensor element
AssigneeShibaura Electronics Co., Ltd.
InventorsAkitaka Takeuchi, Naohiro Niizeki
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Abstract
Provided is a thermistor sintered body which stably provides a desired B constant even if a composition deviation of an additive element has occurred. The thermistor sintered body-includes a Y2O3 phase and a YMnO3 phase, wherein a chemical composition of Cr, Mn, Ca and Y excluding oxygen includes Cr: 3 mol % or less (while including 0%), Mn: 5 to 18 mol %, Ca: 1 to 18 mol %, and Sr: 1 to 25 mol %, with the balance being unavoidable impurities and Y. In the thermistor sintered body, Ca and Sr may be dissolved in the YMnO3 phase.
Claims4
A thermistor sintered body comprising a Y2O3 phase and a YMnO3 phase, wherein:
- a chemical composition of Cr, Mn, Ca, Sr and Y excluding oxygen comprises Cr:
- 0 to 3 mol %, Mn:
- 5 to 18 mol %, Ca:
- 1 to 18 mol %, and Sr:
- 1 to 25 mol %, with the balance being unavoidable impurities and Y,
- Ca and Sr are dissolved in the YMnO3 phase, and
- a range of B constant values for temperatures between 25° C. and 50° C. for all elemental mol % combinations of the chemical composition is 10 K or less.
A thermistor sintered body comprising a Y2O3 phase and a YCrO3 phase, wherein:
- a chemical composition of Cr, Mn, Ca, Sr and Y excluding oxygen comprises Cr:
- 5 to 20 mol %, Mn:
- 0 to 3 mol %, Ca:
- 1 to 18 mol %, and Sr:
- 1 to 25 mol %, with the balance being unavoidable impurities and Y,
- Ca and Sr are dissolved in the YCrO3 phase, and
- a range of B constant values for temperatures between 25° C. and 50° C. for all elemental mol % combinations of the chemical composition is 25 K or less.
Dependencies are inferred from the claim text.