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Focusing of Sound in a 3D Phononic Crystal

✍ Scribed by Yang, Suxia; Page, J. H.; Liu, Zhengyou; Cowan, M. L.; Chan, C. T.; Sheng, Ping


Book ID
125507300
Publisher
The American Physical Society
Year
2004
Tongue
English
Weight
541 KB
Volume
93
Category
Article
ISSN
0031-9007

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## Abstract It is established that the absorption in the intermediate infra‐red region in BiOI, BiOBr, and BiOCl has two‐phonon character. Group‐theoretical investigations of the phonon spectrum and two‐phonon infra‐red absorption and Raman scattering for these crystals are Carried out. The selecti