Cart (Loading....) | Create Account
Close category search window

Determination of elastic constants of thin films from phase velocity dispersion of different surface acoustic wave modes

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Makarov, S. ; Paul‐Drude‐Institut für Festkörperelektronik, Hausvogteiplatz 5‐7, D‐10117 Berlin, Germany ; Chilla, E. ; Frohlich, H.‐J.

Your organization might have access to this article on the publisher's site. To check, click on this link: 

We have carried out a systematic investigation of the achievable accuracy in the determination of the independent elastic constants c11 and c12 and the related constant c44 of thin isotropic films from the phase velocity dispersion of surface acoustic waves (SAWs). As a model system SiO2 and Au films deposited on Y‐cut LiNbO3 were considered. The phase velocity dispersion was calculated for real elastic constants in dependence on the film thickness. These input data were used to determine the least‐squares fits of the input dispersion and the phase velocity obtained by modifying c11 and c12. The minimum of this error field describes the solution of the inverse wave propagation problem. Error fields of the least‐squares fits were calculated with ±5% variation for c11 and ±30% for c12. Different functional behavior and various magnitudes of the dispersion were compared. When simulating a small measuring uncertainty for the phase velocity the solution of the inverse problem becomes unstable which results in an insufficient accuracy of the interesting elastic constants. By superposition of two SAW modes the inaccuracy was significantly reduced. For the model system each independent SAW mode offers the ability to determine one elastic constant or one relation between different elastic parameters. © 1995 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:78 ,  Issue: 8 )

Date of Publication:

Oct 1995

Need Help?

IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.