A method is proposed for determining by means of SAWs the density and elastic moduli and their changes during the adsorption of gas molecules by a film. The method is based on a comparison of the experimentally measured and analytically calculated values of the group velocity and relative changes in the phase velocity of the wave for layered structures with the given film and substrates of various materials. The method has been tested using hydrogen sensitive palladium films. A comparison has been made of the elastic properties of palladium in the form of a thin film, a bulk polycrystal and a single crystal.
Determining the elastic properties of thin films and their changes by means of surface acoustic waves (SAWs)
Verardi P;Verona E
1995
Abstract
A method is proposed for determining by means of SAWs the density and elastic moduli and their changes during the adsorption of gas molecules by a film. The method is based on a comparison of the experimentally measured and analytically calculated values of the group velocity and relative changes in the phase velocity of the wave for layered structures with the given film and substrates of various materials. The method has been tested using hydrogen sensitive palladium films. A comparison has been made of the elastic properties of palladium in the form of a thin film, a bulk polycrystal and a single crystal.File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
