First Evidence of Surface SH-Wave Propagation in Cubic PiezomagneticsReport as inadecuate




First Evidence of Surface SH-Wave Propagation in Cubic Piezomagnetics - Download this document for free, or read online. Document in PDF available to download.

This theoretical work provides with results of characteristics calculation of the ultrasonic surface Zakharenko waves USZWs existing in piezomagnetic cubic monocrystals of class m3m that can be readily used for non-destructive testing. The piezomagnetic waves propagate in direction 101 corresponding to relatively easy magnetization for the following piezomagnetics: Galfenol, Terfenol-D, and CoFe2O4 with cubic structures. The phase velocities of the USZW-waves and the coefficient of magnetomechanical coupling CMMC K2 were calculated for the crystals. It was found that the coefficient K2 for piezomagnetics with Km2 > 1-3 and Km2 >> 1-3 is about 8% to 9%, where K2 = 2 VUSZW,o – VUSZW,c-VUSZW,o and Km2 = h2-Cμ. Knowledge of piezomagnetic properties of cubic crystals makes possible the use of them in new products utilizing the phenomenon called the magnetoelectric effect. Also, this study is useful for possible application of cubic piezomagnetics in composite structures consisting of piezoelectric and or piezomagnetic materials and in the microwave technology. This broadens choice of possible piezomagnetic materials for utilization in various technical devices.

KEYWORDS

Piezomagnetic Cubic Monocrystals, Galfenol and Terfenol-D, Ultrasonic Surface Zakharenko Waves

Cite this paper

A. Zakharenko -First Evidence of Surface SH-Wave Propagation in Cubic Piezomagnetics,- Journal of Electromagnetic Analysis and Applications, Vol. 2 No. 5, 2010, pp. 287-296. doi: 10.4236-jemaa.2010.25037.





Author: Aleksey Zakharenko

Source: http://www.scirp.org/



DOWNLOAD PDF




Related documents