Title :
Observation of anisotropic thermal diffusivities in yz LiNbO3 using transient heat pulse diffusion measurement [SAW devices]
Author :
Kobayashi, K. ; Koike, T. ; Imai, Y. ; Obara, H.
Author_Institution :
Dept. of Mech. Eng., Tamagawa Univ., Tokyo, Japan
Abstract :
In previous reports, we proposed and studied a new technique to estimate acoustic wave velocities in various materials using the heat pulse diffusion measurement and estimated the acoustic wave velocity in a thin diamond film grown on Si and intrinsic Si wafer. We also tried a similar measurement on LiNbO3. In this report we improved this technique and re-examined intrinsic Si and yz LiNbO3 wafers used in the previous report. We find the evidence of the anisotropic diffusivities in LiNbO3 for the first time
Keywords :
acoustic wave velocity; lithium compounds; surface acoustic wave devices; thermal diffusivity; LiNbO3; LiNbO3-Si; SAW devices; acoustic wave velocities; anisotropic thermal diffusivities; materials quality; transient heat pulse diffusion measurement; Acoustic materials; Acoustic measurements; Acoustic pulses; Acoustic waves; Anisotropic magnetoresistance; Optical pulse generation; Piezoelectric films; Pulse measurements; Thermal conductivity; Velocity measurement;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.991661
