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Pyroelectric ceramic material for passive pyroelectric infrared sensor and preparation method of pyroelectric ceramic material
The invention relates to a pyroelectric ceramic material for a passive pyroelectric infrared sensor. The pyroelectric ceramic material is prepared from chemical elements as follows: (Pb1-x-yLaxSry)(Mn1/3Nb2/3)z(Zr0.94Ti0.06)1-zO3+phiat percent A. In the formula, x is greater than or equal to 0.002 and less than or equal to 0.1, y is greater than or equal to 0.01 and less than or equal to 0.1, and z is greater than or equal to 0.01 and less than or equal to 0.1, phi is equal to 0 or is greater than or equal to 2.8 and less than or equal to 5.5, A is a mixture of B2O3 and Cr2O3, and the mole ratio of B2O3 to Cr2O3 is 1:1. The pyroelectric ceramic material provided by the invention is low in sintering temperature, wide in sintering temperature range, low in phase change temperature, small in spontaneous polarization, relatively low in dielectric constant and dielectric loss, and applicable to the manufacturing of sensors such as a pyroelectric electric infrared sensor and an uncooled focal plane infrared sensor, and the manufactured passive infrared pyroelectric sensor is low in noise value, high in sensitivity and long in detection distance.
Pyroelectric ceramic material for passive pyroelectric infrared sensor and preparation method of pyroelectric ceramic material
The invention relates to a pyroelectric ceramic material for a passive pyroelectric infrared sensor. The pyroelectric ceramic material is prepared from chemical elements as follows: (Pb1-x-yLaxSry)(Mn1/3Nb2/3)z(Zr0.94Ti0.06)1-zO3+phiat percent A. In the formula, x is greater than or equal to 0.002 and less than or equal to 0.1, y is greater than or equal to 0.01 and less than or equal to 0.1, and z is greater than or equal to 0.01 and less than or equal to 0.1, phi is equal to 0 or is greater than or equal to 2.8 and less than or equal to 5.5, A is a mixture of B2O3 and Cr2O3, and the mole ratio of B2O3 to Cr2O3 is 1:1. The pyroelectric ceramic material provided by the invention is low in sintering temperature, wide in sintering temperature range, low in phase change temperature, small in spontaneous polarization, relatively low in dielectric constant and dielectric loss, and applicable to the manufacturing of sensors such as a pyroelectric electric infrared sensor and an uncooled focal plane infrared sensor, and the manufactured passive infrared pyroelectric sensor is low in noise value, high in sensitivity and long in detection distance.
Pyroelectric ceramic material for passive pyroelectric infrared sensor and preparation method of pyroelectric ceramic material
BAI XUCHUN (author) / SUN FUTIAN (author) / ZHANG DIANDE (author) / LI XUE (author) / ZHENG GUOEN (author) / FU HAO (author) / CHANG JIHUA (author)
2015-05-13
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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