Semiconductor Physics, Quantum Electronics & Optoelectronics. 2002. V. 5, N 1. P. 31-35.
Properties and application of ultrasonic Lamb
waves in CdXHg1-XTe plates
Institute of Semiconductor Physics, NAS of Ukraine,
45 prospect Nauky, 03028 Kyiv, Ukraine
Abstract. Group and phase velocities of the lowest orders of Lamb waves in <100>, <110> directions for (100) Cd0.2Hg0.8Te plates are calculated. Frequency dispersion of a0 and s0 Lamb modes velocities were measured on (111)-plates in the range of frequencies from 0.2 to 10 MHz. The frequency dependencies of relative efficiency of the Lamb modes excitation using two geometrical versions: symmetrical - with two piezoelectric transducers, and antisymmetrical - with one piezoelectric transducer, have been studied. Possible applications of studied waves including ultrasonic treatment of semiconductors have been discussed.
Keywords: CdXHg1-XTe solid solutions, ultrasonic
treatment, Lamb waves, efficiency of ultrasonic mode generation.