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La₃Ga₅SiO₁₄的BAW传播特性

Propagating Characteristics of Bulk Acoustic Waves in La₃Ga₅SiO₁₄ Crystal

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【Author】 WEI Ai-jian~(1,2),YUAN Duo-rong~2,ZHAO Yi-jun~1,QI Hai-feng~1 (1. Department of Optics,Shandong University,Jinan 250100,China; 2. State Key Laboratory of Crystal Materials,Institute of Crystal Materials,Shandong University,Jinan 250100,China) (Received 13 August 2004)

【机构】山东大学信息学院光学系；山东大学晶体材料研究所晶体材料国家重点实验室；山东大学信息学院光学系济南250100山东大学晶体材料研究所；晶体材料国家重点实验室；济南250100；济南250100；

【摘要】详细推导计算了声体波(BAW)在La3Ga5SiO14 (LGS)晶体中分别沿YZ、XY、XZ面传播的纯切变波,准切变波,准纵波的表达式。绘制了LGS晶体在(100)、(010)、(001)这三个主晶面内声的慢度分布曲线图。计算了声速的最大值并与石英进行比较,结果表明LGS晶体的BAW传播速度一般比石英低1000m/s左右。为该晶体在声体波器件等方面的设计和应用提供了一定的理论指导作用。更多还原

【Abstract】 The expressions of bulk acoustic waves（BAW）propagating on YZ,XY and XZ planes of the La₃Ga₅SiO₁₄（LGS）crystal were deduced in detail.The curves of slowness on（100）,（010） and（001）planes of LGS crystal were plotted.The maximum of acoustic velocity of the LGS crystal was also calculated,and the comparison with that of α-SiO₂ was made.It appears that,in general,the acoustic velocity of the LGS crystal is about 1000m/s smaller than that of α-SiO₂.The results can provide some theoretical guidances for design and application of the LGS crystal in BAW device.更多还原