Abstract
This theoretical paper analytically predicts the existence of new surface wave in propagation direction [101] in the cubic piezoelectromagnetics. The solution for the velocity of the new wave is given in an explicit form. Such new wave possesses one real component and two purely imaginary components. This corresponds to a leaky acoustic SH-wave. However, in this case the real component does not participate in the complete displacements. As a result, the new wave can represent the new shear-horizontal surface acoustic wave (SH-SAW) for suitable boundary conditions. For the me-chanically free surface, several combinations of the following electrical and magnetic boundary conditions were used: electrically closed, electrically open, magnetically closed, magnetically open surface. This new SH-SAW can propagate with the speed slightly larger than that for the SH bulk acoustic wave coupled with both the electrical and magnetic potentials. The existence conditions for the new SH-SAW were also discussed. They can be very complicated and depend on all the material parameters. It was also discussed that the results can be true for the left-handed metamaterials. It is thought that the new SH-SAW can be produced by electromagnetic acoustic transducers (EMATs) because generation of SH-SAWs is feasible with the EMATs. This can be a problem for experimentalists working in the research arenas such as acoustooptics, photonics, and acoustooptoelectronics.
Highlights
There is a continuous interest in the various theoretical and experimental investigations of the magnetoelectric (ME) effect in materials for development of smart materials in the microwave technology
This theoretical paper analytically predicts the existence of new surface wave in propagation direction [101] in the cubic piezoelectromagnetics
It is thought that the new shear-horizontal surface acoustic wave (SH-SAW) can be produced by electromagnetic acoustic transducers (EMATs) because generation of SH-SAWs is feasible with the EMATs
Summary
There is a continuous interest in the various theoretical and experimental investigations of the magnetoelectric (ME) effect in (composite) materials for development of smart materials in the microwave technology. The ME effect can lead to the following: An electrical signal caused by the presence of the piezoelectric phase of such composites can be obtained as a result of the application of a magnetic field affecting the composite piezomagnetic phase. The composite piezomagnetic phase can magnetically respond because of the application of an electrical field to the ME composite possessing the piezoelectric phase. For the reader who would like to know more about the subject, it is strongly recommended to use the following several additional review papers cited in Refs. All these review papers did not mention achievements in the theory of the wave propagation in the piezoelectromagnetic composite materials possessing the ME effect
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