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Permanently stored echoes in powdered materials

 

作者: S. Kupca,   I. Maartense,   H. P. Kunkel,   C. W. Searle,  

 

期刊: Applied Physics Letters  （AIP Available online 1976）
卷期: Volume 29, issue 4  

页码: 224-226

 

ISSN:0003-6951

 

年代: 1976

 

DOI:10.1063/1.89044

 

出版商: AIP

 

数据来源: AIP

 

摘要:

A permanent echo following a two‐pulse write sequence which has been observed from piezoelectric powders is also observed in other types of powders. It is shown that a simple model in which the echo originates from the mechanical alignment of particles is consistent with all known echo properties.

 

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