Title :
High frequency high-order Rayleigh modes in ZnO/GaAs
Author :
Pedrós, J. ; Ford, C.J.B. ; Barnes, C.H.W. ; Griffiths, J.P. ; Jones, G.A.C. ; García-Gancedo, L. ; Flewitt, A.J. ; Calle, F.
Author_Institution :
Cavendish Lab., Univ. of Cambridge, Cambridge, UK
Abstract :
Strong high-order Rayleigh or Sezawa modes, in addition to the fundamental Rayleigh mode, have been observed in ZnO/GaAs(001) systems along the [110] propagation direction of GaAs. The dispersion of the different acoustic waves has been calculated and compared to the experimental data. The bandwidth and impedance matching characteristics of the multimode SAW delay lines operating at high frequencies (2.5-3.5 GHz regime) have been investigated.
Keywords :
II-VI semiconductors; III-V semiconductors; Rayleigh waves; acoustic wave scattering; gallium arsenide; impedance matching; surface acoustic wave delay lines; surface acoustic waves; zinc compounds; Sezawa modes; ZnO-GaAs; acoustic wave dispersion; bandwidth characteristic; frequency 2.5 GHz to 3.5 GHz; high frequency high order Rayleigh modes; impedance matching; multimode SAW delay lines; propagation direction; Bandwidth; Delay lines; Films; Gallium arsenide; Substrates; Surface acoustic waves; Zinc oxide;
Conference_Titel :
Frequency Control and the European Frequency and Time Forum (FCS), 2011 Joint Conference of the IEEE International
Conference_Location :
San Fransisco, CA
Print_ISBN :
978-1-61284-111-3
DOI :
10.1109/FCS.2011.5977836
