TY - JOUR
T1 - A review of langasite material constants from BAW and SAW data
T2 - Toward an improved data set
AU - Kosinski, John A.
AU - Pastore, Robert A.
AU - Bigler, Emmanuel
AU - Da Cunha, Mauricio Pereira
AU - Molacha, Donald C.
AU - Detaint, Jacques
PY - 2001
Y1 - 2001
N2 - 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 re-computed 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.
AB - 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 re-computed 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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U2 - 10.1109/FREQ.2001.956203
DO - 10.1109/FREQ.2001.956203
M3 - Article
AN - SCOPUS:0035170717
SN - 0161-6404
SP - 278
EP - 286
JO - Proceedings of the Annual IEEE International Frequency Control Symposium
JF - Proceedings of the Annual IEEE International Frequency Control Symposium
ER -