A review of langasite material constants from BAW and SAW data: toward an improved data set

Proceedings of the 2001 IEEE International Frequncy Control Symposium and PDA Exhibition (Cat. No.01CH37218) Pub Date : 2001-06-06 DOI:10.1109/FREQ.2001.956203

J. Kosinski, R. Pastore, E. Bigler, M. D. da Cunha, D. Malocha, J. Détaint

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引用次数: 37

Abstract

The aim of this paper is to derive an improved set of Langasite (LGS) material constants based on BAW and SAW data in order to get a better agreement between theoretical predictions and experimental measurements for wave velocities and temperature effects. In a previous work it was shown that an "aggregate" set of the measured values of bulk wave velocities can provide a improved set of measurement data for BAW propagation. Recent advances in LGS crystal growth and measurement of material properties obtained independently from the original authors allows us to go further, one unsolved problem with previous data being inconsistencies in the temperature derivatives of material constants of LGS. This paper brings together a large quantity of experimental data obtained independently by the authors. Comparison between experiments and theoretical predictions are recomputed taking into account the more recently published data sets for LGS. In combination with a critical analysis of the literature on LGS crystals, an improvement of a "best fit" data set for velocities is proposed.

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从BAW和SAW数据中对langasite材料常数的回顾:一个改进的数据集

本文的目的是在BAW和SAW数据的基础上推导出一套改进的Langasite (LGS)材料常数，以便在波速和温度效应的理论预测和实验测量之间得到更好的一致性。在以前的工作中，已经证明了体波速度测量值的“汇总”集可以为BAW传播提供一组改进的测量数据。LGS晶体生长和材料性能测量的最新进展使我们能够走得更远，以前的数据未解决的一个问题是LGS材料常数的温度导数不一致。本文汇集了作者独立获得的大量实验数据。考虑到最近发表的LGS数据集，重新计算了实验和理论预测之间的比较。结合对LGS晶体文献的批判性分析，提出了速度“最佳拟合”数据集的改进。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the 2001 IEEE International Frequncy Control Symposium and PDA Exhibition (Cat. No.01CH37218)

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