The growth and structure of gold and silver deposits formed by evaporation inside an electron microscope

Pashley, D. W.; Stowell, M. J.; Jacobs, Michael; Law, T. J.

doi:10.1080/14786436408224212

Cited by 395 publications

(74 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Grain growth during film coalescence has been observed experimentally [16,17] but has not been studied or modeled in detail. In the case of Au e-beam evaporated on an oxidized Si substrate [16], the discontinuous film consists of small (< 100 A), randomly oriented islands.…”

Section: -Island Coalescence and Film Thickeningmentioning

confidence: 99%

See 1 more Smart Citation

Grain Growth and Texture Evolution in Thin Films

Thompson¹,

Carel²

1996

MSF

View full text Add to dashboard Cite

Microstructural and texture evolution during grain growth in polycrystalline thin films was investigated. Grain growth in thin films is a coarsening process driven by the reduction of grain boundary energy, surface energies, and strain energy density. Because crystal properties can be anisotropic, grain growth in thin films is an orientation selective process. Surface and interfacial energy minimization or reduction favors the growth of grains with low combined surface and interfacial free energy. For the films and substrates investigated in this thesis, surface and interfacial energy promotes the growth of (111)-textured grains. Thin films on thick substrates are usually subjected to a non-zero state of strain, arising from differential thermal expansion between the film and the substrate, from densification and from intrinsic strains. For elastically deformed fcc metal films, strain energy density promotes the growth of (001)-textured grains. In plastically deformed films, strain energy density can favor the growth of (011)-textured grains; this results from the orientation dependence of the yield stress of grains in thin films. (111) grains are predicted to maximize the yield stress, and (011) grains are predicted to have low yield stress. An analytic model for texture evolution during grain growth in thin films can be developed by equating the magnitudes of the orientation-dependent driving forces, for pairs of orientations. The analytic model can be used to generate texture maps that define which orientations are expected to grow preferentially as a function of the processing conditions, i.e., the deposition temperature, the grain growth temperature, and the film thickness. Experimental texture maps can be generated and used to test the validity of the analytic model.Computer simulations of grain growth have been carried out using a front-tracking simulation method. Interfacial energy, elastic and plastic strain energy density, and grain growth stagnation are accounted for in the simulations. Materials parameters characteristic of Ag/(001)Ni were used. The main result of the simulations is to validate the analytic model for texture evolution during grain growth. The computer simulations also provide insights into the coupling between yielding and grain growth.Grain growth experiments in Ag/(001)Ni/(001)Ag/(001)MgO, Ag/SiO2/MgO, Ag/SiO 2 /Si, Ni/SiO 2 /Si, and Al/SiO 2 /Si were carried out. Both the thickness and the thermal strain were systematically varied, and an experimental texture map was constructed for each system. The dependence of texture evolution on strain and thickness was found to be consistent with the trends predicted by the analytic model in all of these systems. While the texture map for Ag/(001)Ni was found in quantitative agreement with the model, with no adjustable parameters, no single set of fitting parameters was found for Ag/SiO 2 /Si and for Ag/SiO 2 fMgO. Possible origins of this discrepancy are discussed.Additional experiments are proposed that could provide a better under...

show abstract

Section: -Island Coalescence and Film Thickeningmentioning

confidence: 99%

“…In the case of Au e-beam evaporated on an oxidized Si substrate [16], the discontinuous film consists of small (< 100 A), randomly oriented islands. As the film coalesces, a few (111)-textured grains grow in the film, much larger than the other grains.…”

Section: -Island Coalescence and Film Thickeningmentioning

confidence: 99%

Grain Growth and Texture Evolution in Thin Films

Thompson¹,

Carel²

1996

MSF

View full text Add to dashboard Cite

show abstract

“…[4][5][6][7][8] As the islands grow larger they impinge upon each other. Upon impingement, islands begin to coalesce, driven by capillary forces toward a more equiaxed equilibrium shape, 9 delaying the development of a contiguous film.…”

Section: Introductionmentioning

confidence: 99%

Effect of deposition rate on morphology evolution of metal-on-insulator films grown by pulsed laser deposition

Warrender

Aziz

2007

Phys. Rev. B

View full text Add to dashboard Cite

The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters where B is the kinetic rate constant for coalescence and f is the pulse frequency. Measurements of the percolation transition were consistent with this prediction. These findings indicate that the elementary processes included in the KMC simulation -substrate terrace diffusion, irreversible aggregation of hemispherical islands, and two-island coalescence, but neglecting the effects of Warrender & Aziz, Pg. 2 kinetic energy -are sufficient to explain the behavior observed when the pulse rate is varied at constant kinetic energy.

show abstract

“…It has been observed that in some cases the islands exhibit a liquid-like behavior during coalescence 65 Explanations :of the phenomenon of coalescence attribute this behavior to mass transfer by surface selfdiffusion of the deposit atoms driven by the tendency of the small 65 islands to minimize their surface free energy. The process of coalescence and recrystallization of islands continues until the growing islands reach a size at which coalescence is inhibited and a more or less continuous network of islands is formed.…”

Section: Discussionmentioning

confidence: 99%

Orientation of Crystalline Overlayers on Amorphous Substrates by Artificially Produced Surface Relief Structures

Flanders¹

1978

View full text Add to dashboard Cite

The growth and structure of gold and silver deposits formed by evaporation inside an electron microscope

Cited by 395 publications

References 20 publications

Grain Growth and Texture Evolution in Thin Films

Grain Growth and Texture Evolution in Thin Films

Effect of deposition rate on morphology evolution of metal-on-insulator films grown by pulsed laser deposition

Orientation of Crystalline Overlayers on Amorphous Substrates by Artificially Produced Surface Relief Structures

Contact Info

Product

Resources

About