The first author thankfully acknowledges the financial support provided by CSIR, New Delhi, via project grant No. In a detailed account of plane harmonic generalised elastothermodiffusive waves in The authors are thankful to the reviewer for his useful suggestions for the improvement of this work. Maruszewski analyzed the effect of interactions between elastic, thermal, and charge carrier fields on Rayleigh waves in addition to electron longitudinal waves in semiconductors. In nonlinear theories for deformable semiconductors were developed. Gulyaev explained that a pure transverse wave can propagate along the surface of a homogeneous piezoelectric solid with polarization vector parallel to the surface of the substrate.
ANTENNA AND WAVE PROPAGATION BY K. K. SHARMA FREE
In the propagation of surface acoustic waves at the free surface of a piezoelectric halfspace was predicted. In, the phenomena of surface elastic wave propagation, transduction, and amplification in a piezoelectric semiconductor with special emphasis in relation to electronic devices were discussed. These waves were first discovered by Rayleigh, who explained their propagation and characteristics. Introduction Surface acoustic waves bonded to piezoelectric surfaces have found significant use in various branches of science and technology, especially in the case of interconnected physical fields. The work may be useful for the construction and design of surface acoustic wave devices.ġ. The computer-simulated results have been presented graphically in terms of phase velocity, attenuation coefficient, and specific loss factor of energy dissipation versus wave number and lifetime of charge carrier field in the considered structures. The complex secular equation has been solved using the functional iteration method along with the irreducible Cardano’s method via MATLAB programming for CdSe-Si, CdSe-Ge, PZT-Si and PZT-Ge composite structures. The secular equations in the case of stressfree, isoconcentrated and stress-free, impermeable semiconductor halfspaces have also been deduced as special cases.
The secular equation that governs the wave propagation at the interface has been obtained in compact form after solving the mathematical model analytically.
The mathematical model of the problem consists of a coupled system of partial differential equations of motion, diffusion of electrons, and a Gauss equation along with the boundary conditions to be satisfied at the interface and free surface of the composite structure. S HARMA AND A SHWANI K UMAR We investigate the propagation of interfacial surface waves in a composite consisting of homogeneous isotropic semiconductor halfspace coated with a thin layer of homogeneous, transversely isotropic, piezoelectric material. MODELLING OF ACOUSTODIFFUSIVE SURFACE WAVES IN PIEZOELECTRIC-SEMICONDUCTOR COMPOSITE STRUCTURES J. JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES Vol.
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