An optimized set of temperature coefficients for LGS
An optimized set of temperature coefficients for LGS
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DOI：
10.1109/ultsym.2013.0070
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发表时间：
2013-07
期刊：
影响因子：
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通讯作者：
P. Nicolay;T. Aubert
中科院分区：
文献类型：
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作者：
P. Nicolay;T. Aubert
LGS是一种很有前途的高温声表面波材料。然而，LGS材料常数的温度系数不够精确，无法在300°C以上进行可靠的模拟。在本文的第一部分中，我们描述了一种新的可能的方法来获得这些系数在更宽的温度范围内。计算的系数允许精确预测高达至少800°C。在第二部分中，对算法输出的深入分析展示了其一些主要局限性。描述了可能的解决方案，以预测然后提高优化系数值的准确性。
LGS is a promising material for SAW applications at high temperature. However, the temperature coefficients of LGS material constants are not accurate enough to perform reliable simulations above 300°C. In the first part of the paper, we describe a new possible way to derive these coefficients in a wider temperature range. The calculated coefficients allow for accurate predictions up to at least 800°C. In the second part, a deeper analysis of the algorithm outputs demonstrates some of its main limitations. Possible solutions are described to predict then improve the accuracy of the optimized coefficients values.