| 大尺寸Y方向钽酸镓镧压电晶体生长及性能研究 |
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| 引用本文： | 石自彬,李和新,龙勇,丁雨憧.大尺寸Y方向钽酸镓镧压电晶体生长及性能研究[J].人工晶体学报,2020,49(6):1044-1047. |
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| 作者姓名： | 石自彬 李和新 龙勇 丁雨憧 |
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| 作者单位： | 中国电子科技集团公司第二十六研究所,重庆 400060;中国电子科技集团公司第二十六研究所,重庆 400060;中国电子科技集团公司第二十六研究所,重庆 400060;中国电子科技集团公司第二十六研究所,重庆 400060 |
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| 基金项目： | 国家重点研发计划(2016YFB0402701) |
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| 摘 要： | 成功采用提拉法生长了尺寸φ80 mm×100 mm的Y方向钽酸镓镧压电晶体,晶体整体透明、无包裹体。采用LCR电桥测量了晶体的相对介电常数,采用谐振-反谐振法测量了压电应变常数。研究了头尾之间性能差异性,头尾频率常数均匀性达到99.95%,表明晶体存在良好的性能均匀性。此外,还对(010)晶面进行了摇摆曲线和频率温度系数测试,测得FHMW和TCF值分别为38.5″、1.23ppm/K。
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| 关 键 词： | 钽酸镓镧 提拉法 压电性能 |
Study on Growth and Properties of Large Size Y-Orientated Langatate Piezoelectric Crystal |
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| SHI Zibin,LI Hexin,LONG Yong,DING Yuchong.Study on Growth and Properties of Large Size Y-Orientated Langatate Piezoelectric Crystal[J].Journal of Synthetic Crystals,2020,49(6):1044-1047. |
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| Authors: | SHI Zibin LI Hexin LONG Yong DING Yuchong |
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| Institution: | (26th Institute of China Electronics Technology Group Corporation, Chongqing 400060, China) |
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| Abstract: | Y-orientated langatate piezoelectric crystal with size of φ80 mm×100 mm was successfully grown by Czochralski method,which is transparent,inclusions-free.The relative dielectric constants and the piezoelectric strain constants were determined by an electric bridge and resonant-anti-resonant method.The performance difference between head and tail was studied.The uniformity of frequency constant has been determined to be 99.95%,which shows the excellent uniformity of the crystal.In addition,the swing curve and the temperature coefficient of frequency(TCF)were tested on(010)crystal facet.The FHMW and TCF values were 38.5″and 1.23ppm/K,respectively. |
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| Keywords: | La3Ga5 5Ta0 5O14 Czochralski method piezoelectric property |
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