GaPO/sub 4/ crystals for sensor applications
SENSORS, 2002 IEEE - Tập 1 - Trang 589-593 vol.1
Tóm tắt
The piezoelectric crystal material gallium (ortho) phosphate GaPO/sub 4/ can be considered to be the "high tech brother of quartz". The high thermal stability up to 970/spl deg/C and its high sensitivity make GaPO/sub 4/ a very attractive choice for a wide range of high temperature applications. Furthermore it shows no pyroelectricity, no outgassing and a high electric resistivity to guarantee high precision piezoelectric measurements. GaPO/sub 4/ offers good temperature compensation for a new generation of crystal microbalances operating at temperatures up to at least 700/spl deg/C as shown in thermogravimetric and film thickness measurements. It also allows the production of SAW sensors with a very high thermal stability.
Từ khóa
#Temperature sensors #Thermal stability #Crystalline materials #Piezoelectric materials #Temperature distribution #Pyroelectricity #Electric resistance #Electric variables measurement #Piezoelectric films #Thickness measurementTài liệu tham khảo
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