Temperature Dependent Elasticity of a Ni2MnGa Film as Measured by Impulsive Stimulated Scattering

0435678 - ÚT 2015 RIV GB eng C - Konferenční příspěvek (zahraniční konf.)
Sermeus, J. - Verstraeten, B. - Stoklasová, Pavla - Landa, Michal - Glorieux, C.
Temperature Dependent Elasticity of a Ni2MnGa Film as Measured by Impulsive Stimulated Scattering.
Journal of Physics: Conference Series. Vol. 520. Bristol: Institute of Physics Publishing, 2014, 012013_1-012013_4. 520. ISSN 1742-6588.
[International Symposium on Laser Ultrasonics and Advanced Sensing /3./. Yokohama (JP), 25.06.2014-28.06.2014]
Grant CEP: GA ČR GPP101/12/P428
Institucionální podpora: RVO:61388998
Klíčová slova: impulsive stimulated scattering * elasticity * surface acoustic waves * magnetic shape memory alloy
Kód oboru RIV: BI - Akustika a kmity

We report the results of an impulsive stimulated scattering measurement conducted on a 550 nm film Ni2MnGa on a MgO substrate, aiming at the direct experimental observation of the highly temperature dependent elasticity. The phase velocity of the surface acoustic waves excited on the surface of the coating-substrate shows an anomaly around the phase transition temperature of Ni2MnGa, showing that it is possible to use impulsive stimulated scattering as a characterization tool to determine temperature dependent elasticity of a thin film.
Trvalý link: http://hdl.handle.net/11104/0240546