Download Physical properties of thin metal films by G P Zhigal'skii; Brian K Jones PDF

By G P Zhigal'skii; Brian K Jones

content material: Conduction in Discontinuous movies. Size-effects in skinny steel movies. inner Mechanical Stresses and Voids in skinny steel motion pictures. electric Noise in skinny movies and Thin-Film buildings. Non-linear Conduction and Non-Equilibrium Noise in skinny motion pictures. Degradation Mechanisms in skinny steel Films.

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P. K. 1–10 nm. 3]. The electrical properties of such island condensates on a dielectric substrate are very different from the properties of a bulk metal. Their characteristics are closer to the properties of semiconductors. The resistivity of such systems is many orders of magnitude higher than that of bulk metals and is determined mainly by the thickness of the layer. 4. 7. The conduction in island films is determined basically by the spaces between the islands, through which electrons must jump to allow an electric current to flow.

Let us clarify the reasons why films deposited in an argon atmosphere have more ideal properties than films made by thermal evaporationcondensation in a vacuum. The difference from the case of evaporation in a vacuum is that the atoms of the metal evaporated in an atmosphere of an inert gas lose their kinetic energy through collisions with the atoms of the gas in the volume of the chamber, and they join into complexes of two, three and more atoms while still in the vapour phase. 7]. At this pressure, if the distance from the evaporator to the substrate is less than about 15 cm, then fewer than 33% of the evaporated metal atoms reach the substrate without collision with atoms of argon.

Jones 22 Factors that determine the properties of films (clusters). If the adsorbed atom does not participate in the formation of clusters, it re-evaporates because it may receive sufficient energy from its thermal motion to come off the substrate. The lifetime of metal atoms on a substrate surface fluctuates about some average value, , which is also called the adhesion time. The lifetime depends on the temperature of the substrate and the strength of the bond between the atoms of the metal and the substrate surface.

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