NDLI: Comparative study of GaPO4, langasite, and LiNbO3 properties with application in Surface Acoustic Waves microdevices

Content Provider	IEEE Xplore Digital Library
Author	Schiopu, P. Cristea, I. Grosu, N. Craciun, A.
Copyright Year	2009
Description	Author affiliation: Politehnica University of Bucharest - Optoelectronics Research Center, Romania (Schiopu, P.; Cristea, I.; Grosu, N.; Craciun, A.)
Abstract	The results of research into Surface Acoustic Wave — SAW — devices have been recognized for their efficiency and versatility in the electrical signals processing. Actual progress in the industrial application of piezoelectric materials such as Lithium Niobate (LiNbO3), Langasite (LGS), Lanthanum-Gallium Silicate La3Ga5SiO14 and Gallium Orthophosphate (GaPO4), allows the manufacturing of devices with performances, which overcome the limits obtained with quartz crystals. One of the most important applications of SAW microdevices is passively, wirelessly interrogating systems. Today, GaPO4 with its properties is by far the best suited piezoelectric material to be used in sensor applications for machine monitoring and pressure measurements, at high temperatures. SAW microdevices based on GaPO4 operate at temperatures of up to 800°C. In this paper is presented a short introduction regarding the actual level of SAW microdevices development. We discuss our investigations as a comparative study of GaPO4, Langasite, and LiNbO3, regarding their properties. Each has unique strengths and weaknesses giving advantages in different applications. Conclusions regarding trends in the development of SAW sensor devices with novel materials are presented in the end of the work.
Starting Page	1
Ending Page	7
File Size	2077312
Page Count	7
File Format	PDF
ISBN	9781424442607
DOI	10.1109/ISSE.2009.5207062
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-05-13
Publisher Place	Czech Republic
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Surface acoustic waves Temperature sensors Piezoelectric materials Surface acoustic wave devices Acoustic waves Acoustic signal processing Manufacturing industries Lithium niobate Gallium compounds Crystals SAW devices Rayleigh SAW interdigital transducer GaPO4 langasite LiNbO3
Content Type	Text
Resource Type	Article

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