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

Temperature variation of acoustic attenuation and nonlinearity constant in Ge and GaAs

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

2 Author(s)
Rajagopalan, S. ; Department of Physics, Nagpur University, Nagpur 440 010, India ; Joharapurkar, D.N.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.334123 

The temperature dependence of the nonlinearity constant in pure germanium has been estimated for longitudinal waves along [110] and [111] directions and for shear waves along [110] direction with polarization along [11¯0] and [001] directions in the temperature range 25–293 K. The nonlinearity constant estimated from second order elastic constants and third order elastic constants has been further used to evaluate the ultrasonic attentuation at 475 MHz in Ge for (i) longitudinal waves along the [110] direction and (ii) for shear waves along the [110] directions. We have also estimated the nonlinearity constant and ultrasonic attenuation for longitudinal waves at 306 MHz along the [111] direction. The estimated values of attenuation have been compared with the experimental values of attenuation available in the literature. They are found to be in good agreement with the experimental values. The estimated values of nonlinearity constant increases with temperature for longitudinal waves whereas it shows a negative temperature coefficient for shear waves. The results are similar for Si and Cu. The nonlinearity constant for GaAs at 298 K is estimated from elastic moduli data for longitudinal waves along [111] direction and for shear waves along [110] direction with polarization along [001] direction and then the frequency dependence of ultrasonic attenuation have been estimated. Comparison with the experimental values available in literature shows that the results are quite satisfactory. It is worthwhile to mention that the Mason’s nonlinearity constant D is deceptively similar to the nonlinearity parameter β defined by Breazeale and coworkers. The nonlinearity constant D is evaluated from the knowledge of the Gruneisen number γ ji for various modes and directions and other data, whereas the nonlinearity parameter β is the negative ratio of coefficients of nonlinear term to the linear term of the (d- issipationless) nonlinear wave equation. Both D and β are in general temperature dependent.

Published in:

Journal of Applied Physics  (Volume:56 ,  Issue: 5 )

Date of Publication:

Sep 1984

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.