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REN Nai-fei, WANG Hui, JIN Wei-feng, ZHOU Ming. Instantaneous Reflectivity of Ni-Fe Alloy Single Layer Film and Its Composite Films with Different Thicknesses Excited by Femtosecond Laser[J]. Materials and Mechanical Engineering, 2009, 33(9): 72-75.
Citation: REN Nai-fei, WANG Hui, JIN Wei-feng, ZHOU Ming. Instantaneous Reflectivity of Ni-Fe Alloy Single Layer Film and Its Composite Films with Different Thicknesses Excited by Femtosecond Laser[J]. Materials and Mechanical Engineering, 2009, 33(9): 72-75.
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Instantaneous Reflectivity of Ni-Fe Alloy Single Layer Film and Its Composite Films with Different Thicknesses Excited by Femtosecond Laser

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  • Received Date: April 06, 2009
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  • Ni-Fe alloy single layer film and its composite films with different thicknesses were deposited by magnetron sputtering technique.The influences of multi-layers and thickness on the instantaneous reflectivity of Ni-Fe alloy films were studied by using femtosecond laser pump-probe technology.The results show that the instantaneous reflectivity of Ni-Fe films arrived at the maximum after 0.2 ps excited by femtosecond laser,and then arrived at the minimum after another 0.2 ps,and the system was in equilibrium.The instantaneous reflectivity ΔR/R curves of the Ni-Fe alloy films had different changing ranges at zero.And the change values of ΔR/R curves after zero decreased first and then increased with the increase of thickness of Ni-Fe single layer film.
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