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GALLATE SINGLE CRYSTAL, PIEZOELECTRIC DEVICE FOR HIGH-TEMPERATURE USE AND PIEZOELECTRIC SENSOR FOR HIGH-TEMPERATURE USE
GALLATE SINGLE CRYSTAL, PIEZOELECTRIC DEVICE FOR HIGH-TEMPERATURE USE AND PIEZOELECTRIC SENSOR FOR HIGH-TEMPERATURE USE
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机译:GALLATE单晶硅,用于高温用途的压电器件和用于高温用途的压电传感器
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摘要
PROBLEM TO BE SOLVED: To provide a material for a piezoelectric device used at a high temperature range, which can be used in the high temperature range exceeding 400°C and has a resistivity thereof whose temperature dependence is low.;SOLUTION: The material is characterized by having a composition selected from the group consisting of RE3Ga5-xAlxSiO14 (wherein RE represents a rare earth, and 0x5), RE3Ta0.5Ga5.5-xAlxO14 (wherein RE represents a rare earth, and 0x5.5) and RE3Nb0.5Ga5.5-xAlxO14(wherein RE represents a rare earth, and 0x5.5), and characterized in that a resistivity change in the temperature range of 100 to 600°C is 104 or less. The material is characterized by being produced by: growing a single crystal from a solution in an atmosphere of an inert gas containing an oxidative gas; subsequently lowering the molar fraction (z) of the oxidative gas in the inert gas below the molar fraction of the oxidative gas in the growing process; and cooling the single crystal.;COPYRIGHT: (C)2013,JPO&INPIT
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机译:解决的问题:提供一种用于高温范围的压电器件的材料,该材料可以在超过400°C的高温范围内使用,并且其电阻率对温度的依赖性低。其特征在于其组成选自RE 3 Sub> Ga 5-x Sub> Al x Sub> SiO 14 Sub>其中RE代表稀土,0 3 Sub> Ta 0.5 Sub> Ga 5.5-x Sub> Al x < / Sub> O 14 Sub>(其中RE代表稀土,0 3 Sub> Nb 0.5 Sub> Ga 5.5-x Sub> Al x Sub> O 14 Sub>(其中RE代表稀土,0 4 Sup>或更低。该材料的特征在于通过在含有氧化性气体的惰性气体的气氛中从溶液中生长单晶来制备该材料。随后在生长过程中将惰性气体中氧化性气体的摩尔分数(z)降低到氧化性气体的摩尔分数以下;并冷却单晶。; COPYRIGHT:(C)2013,JPO&INPIT
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