Thick-mode resonance of a PZT/Si wafer stack investigated by X-ray diffraction in Bragg geometry
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Published:2003-09-08
Issue:5
Volume:36
Page:1144-1147
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ISSN:0021-8898
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Container-title:Journal of Applied Crystallography
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language:
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Short-container-title:J Appl Cryst
Author:
de Souza Paulo Eduardo Narcizo,Cusatis César,Saul Cyro Ketzer,Rodrigues Antônio Ricardo Drohler,de Camargo Paulo César
Abstract
X-ray diffraction in Bragg geometry was used to investigate the effects of standing longitudinal acoustic waves on an Si(111) wafer. A PZT/Si(111) stack with a resonant frequency of 2.34 MHz was constructed. In addition to the ultrasonic vibration, a thermal effect is evident. The thermal contribution causes an angular displacement of the Bragg profile and was mapped without time resolution. The actual ultrasonic oscillation of the surface was measured using a stroboscopic system. Bulging of the Si(111) surface was mapped out and the maximum deformation near the centre of the Si wafer was determined for a given ultrasonic power. Simple modelling using finite differences was helpful in determining the acoustic and thermal contributions.
Publisher
International Union of Crystallography (IUCr)
Subject
General Biochemistry, Genetics and Molecular Biology
Cited by
2 articles.
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