Propagation of shear elastic and electromagnetic waves in one dimensional piezoelectric and piezomagnetic composites

被引：25
|
作者：
Shi, P. [1 ]
Chen, C. Q. [2 ,3 ]
Zou, W. N. [1 ]
机构：
[1] Nanchang Univ, Inst Engn Mech, Inst Adv Study, Nanchang 330031, Peoples R China
[2] Tsinghua Univ, CNMM, Dept Engn Mech, Beijing 100084, Peoples R China
[3] Tsinghua Univ, AML, Beijing 100084, Peoples R China
来源：
ULTRASONICS | 2015年 / 55卷
基金：
中国国家自然科学基金;
关键词：
Periodic piezoelectric and piezomagnetic composite; Phononic and photonic crystal; Phonon-polariton; PHONONIC CRYSTAL; BAND-GAPS; CUBIC ARRAYS; SUPERLATTICES; LOCALIZATION; POLARITON; PLATES; MODES; RODS; AIR;
D O I：
10.1016/j.ultras.2014.08.011
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
Coupled shear (SH) elastic and electromagnetic (EM) waves propagating oblique to a one dimensional periodic piezoelectric and piezomagnetic composite are investigated using the transfer matrix method. Closed-form expression of the dispersion relations is derived. We find that the band structures of the periodic composite show simultaneously the features of phononic and photonic crystals. Strong interaction between the elastic and EM waves near the center of the Brillouin zone (i.e., phonon-polariton) is revealed. It is shown the elastic branch of the band structures is more sensitive to the piezoelectric effect while the phonon-polariton is more sensitive to the piezomagnetic effect of the composite. (C) 2014 Elsevier B.V. All rights reserved.
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页码：42 / 47
页数：6
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