Langasite: High temperature properties and SAW simulations

Weihnacht, M.; Сотников, А. В.; Schmidt, H.; Wall, B.; Grünwald, R.

doi:10.1109/ultsym.2012.0387

Cited by 17 publications

(14 citation statements)

References 14 publications

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“…6 and 7, respectively. A comparison of elastic data from this work with data obtained by Weihnacht et al (2012). Weihnacht et al (2012) show a very good agreement except for the stiffness coefficient c 33 which differs by about 5 % from the referenced work.…”

Section: Full Set Of Piezoelectric and Elastic Propertiessupporting

confidence: 75%

“…A comparison of elastic data from this work with data obtained by Weihnacht et al (2012). Weihnacht et al (2012) show a very good agreement except for the stiffness coefficient c 33 which differs by about 5 % from the referenced work. In case of the purely acoustic method as used by (Weihnacht et al, 2012) it is possible to measure the phase velocity along the x 3 axis directly.…”

Section: Full Set Of Piezoelectric and Elastic Propertiessupporting

confidence: 75%

“…Weihnacht et al (2012) show a very good agreement except for the stiffness coefficient c 33 which differs by about 5 % from the referenced work. In case of the purely acoustic method as used by (Weihnacht et al, 2012) it is possible to measure the phase velocity along the x 3 axis directly. However, in case of resonant measurement, the excitation of resonant vibration in this direction is not possible.…”

Section: Full Set Of Piezoelectric and Elastic Propertiessupporting

confidence: 58%

“…The availability of such data sets is scarce, since the published materials data are either limited to a fixed temperature or cover only a narrow range around room temperature • C (Bungo et al, 1999;Malocha et al, 2000). Weihnacht et al (2012) provide the components of elastic compliance tensor in the 25 to 600 • C temperature range, determined using the pulse-echo ultrasonic technique (Weihnacht et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Correlation of BAW and SAW properties of langasite at elevated temperatures

Schulz¹,

Mayer²,

Shrena³

et al. 2015

J. Sens. Sens. Syst.

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Abstract. The full set of electromechanical data of langasite (La 3 Ga 5 SiO 14 ) is determined in the temperature range from 20 to 900 • C using differently oriented bulk acoustic wave resonators. For data evaluation a physical model of vibration is developed and applied. Thereby, special emphasis is taken on mechanical and electrical losses at high temperatures. The resulting data set is used to calculate the properties of surface acoustic waves. Direct comparison with experimental data such as velocity, coupling coefficients and propagation loss measured using surface acoustic wave devices with two different crystal orientations shows good agreement.

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Section: Full Set Of Piezoelectric and Elastic Propertiessupporting

confidence: 75%

Section: Full Set Of Piezoelectric and Elastic Propertiessupporting

confidence: 75%

Section: Full Set Of Piezoelectric and Elastic Propertiessupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Correlation of BAW and SAW properties of langasite at elevated temperatures

Schulz¹,

Mayer²,

Shrena³

et al. 2015

J. Sens. Sens. Syst.

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“…So a protective layer is required to improve the stability of the SAW sensor. AlN film was selected as the protective layer on LGS SAW devices [11] due to its good resistant to chemic corrosion and good Table 1 [14], [15]. The boundary conditions in simulation are presented in Table 2.…”

Section: Introductionmentioning

confidence: 99%

Research on the LGS SAW sensor coated with AlN film

Shu¹,

Wang²,

Peng³

et al. 2014

Proceedings of the 2014 International Conference on Advanced ICT (ICAICTE 2014)

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High-temperature electromechanical loss in piezoelectric langasite and catangasite crystals

Suhak

Fritze

Сотников

et al. 2021

Journal of Applied Physics

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Temperature-dependent acoustic loss Q−1 is studied in partially disordered langasite (LGS, La3Ga5SiO14) and ordered catangasite (CTGS, Ca3TaGa3Si2O14) crystals and compared with previously reported CTGS and langatate (LGT, La3Ga5.5Ta0.5O14) data. Two independent techniques, a contactless tone-burst excitation technique and contacting resonant piezoelectric spectroscopy, are used in this study. Contributions to the measured Q−1(T) are determined through fitting to physics-based functions, and the extracted fit parameters, including the activation energies of the processes, are discussed. It is shown that losses in LGS and CTGS are caused by a superposition of several mechanisms, including intrinsic phonon–phonon loss, point-defect relaxations, and conductivity-related relaxations.

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Langasite: High temperature properties and SAW simulations

Cited by 17 publications

References 14 publications

Correlation of BAW and SAW properties of langasite at elevated temperatures

Correlation of BAW and SAW properties of langasite at elevated temperatures

Research on the LGS SAW sensor coated with AlN film

High-temperature electromechanical loss in piezoelectric langasite and catangasite crystals

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