Effects of substantial atomic-oxygen migration across silver−oxide interfaces during silver growth

The presence of atomic oxygen at internal metal-ceramic oxide interfaces signifi- cantly affects the physical properties of the interfaces which in turn affects the bulk properties of the material. This problem is addressed for the model system Ag-MgO from a phenomenolog- ical point of view using the finite element method. The performed parametric studies investigate the influence of different kinetic parameters of the diffusion-segregation system.

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Ad- and Desorption of Oxygen at Metal-Oxide Interfaces: Numerical Approach for Concentration-Dependent Diffusion Coefficient

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.258-260.360 ◽

2006 ◽

Vol 258-260 ◽

pp. 360-365

Author(s):

M. Stasiek ◽

Andreas Öchsner

Keyword(s):

Diffusion Coefficients ◽

Atomic Oxygen ◽

Coupled System ◽

Numerical Approach ◽

Time Dependent ◽

General Boundary Conditions ◽

Oxide Interfaces ◽

One Dimensional ◽

Concentration Dependency ◽

Constant Coefficients

A numerical approach for the segregation of atomic oxygen at Ag/MgO interfaces is presented. A general segregation kinetics is considered and the coupled system of differ- ential equations is solved due to a one-dimensional finite difference scheme which accounts for concentration-dependent diffusion coefficients. Based on a model oxide distribution, the influence of the concentration-dependency is numerically investigated and compared with the solution for constant coefficients. In addition, the numerical approach allows for the consider- ation of general boundary conditions, specimen sizes and time-dependent material and process parameters.

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On some Conceptual Considerations for the Finite Element Simulation of the Oxygen Out-Diffusion in Ag-MgO Composites

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.283-286.1 ◽

2009 ◽

Vol 283-286 ◽

pp. 1-5

Author(s):

Andreas Öchsner

Keyword(s):

Finite Element ◽

Physical Properties ◽

Atomic Oxygen ◽

Oxide Interfaces ◽

Bulk Properties ◽

Nite Element ◽

Element Simulation ◽

Metal Ceramic ◽

Numerical Tools ◽

The Right

The presence of atomic oxygen at internal metal-ceramic oxide interfaces signi¯- cantly affects the physical properties of the interfaces which in turn affects the bulk properties of the material. The application of numerical tools such as the ¯nite element method requires some conceptional considerations if results from different finite element meshes of methods should be comparable. This paper summarises some of these thoughts in order to provide the right basis for comparative investigations.

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Modelling of Oxygen Diffusion and Segregation at Interfaces in Ag-MgO Composites

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.266.29 ◽

2007 ◽

Vol 266 ◽

pp. 29-38

Author(s):

Irina V. Belova ◽

Andreas Öchsner ◽

Nilindu Muthubandara ◽

Graeme E. Murch

Keyword(s):

Oxygen Diffusion ◽

Atomic Oxygen ◽

Composite System ◽

Point Of View ◽

Model Composite ◽

Oxide Interfaces ◽

Bulk Properties ◽

Metal Ceramic ◽

Phenomenological Point ◽

Good Agreement

The presence of atomic oxygen at internal metal-ceramic oxide interfaces significantly affects the physical properties of the interfaces which in turn affects the bulk properties of the material. This problem is addressed for the model composite system Ag-MgO from a phenomenological point of view using a lattice-based Monte Carlo method and a finite element method extended with special user-subroutines. We simulate the time dependence of oxygen depth and contour profiles. We are able to show very good agreement between these two methods.

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Ad- and Desorption of Oxygen at Metal-Oxide Interfaces: Numerical Approach for Non-Homogeneous Oxide Distribution

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.249.35 ◽

2006 ◽

Vol 249 ◽

pp. 35-40 ◽

Cited By ~ 2

Author(s):

Andreas Öchsner ◽

Michael Stasiek ◽

José Grácio

Keyword(s):

Finite Difference ◽

Atomic Oxygen ◽

Numerical Procedure ◽

Coupled System ◽

Numerical Approach ◽

Time Dependent ◽

Two Dimensional ◽

General Boundary Conditions ◽

Oxide Interfaces ◽

One Dimensional

A numerical approach for the segregation of atomic oxygen at Ag/MgO interfaces is presented. A general segregation kinetics is considered and the coupled system of partial differential equations is solved due to a one-dimensional finite difference scheme. Based on a model oxide distribution, the influence of the oxide distribution is numerically investigated and compared with the solution for equidistant arrangements. The numerical approach allows for the consideration of general boundary conditions, specimen sizes and time-dependent material and process parameters. Furthermore, a numerical procedure to convert two-dimensional microstructures into representative one-dimensional distributions is described.

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Synaptic plasticity and oscillation at zinc tin oxide/silver oxide interfaces

Journal of Applied Physics ◽

10.1063/1.4975412 ◽

2017 ◽

Vol 121 (5) ◽

pp. 054104 ◽

Cited By ~ 4

Author(s):

Billy J. Murdoch ◽

Dougal G. McCulloch ◽

James G. Partridge

Keyword(s):

Synaptic Plasticity ◽

Tin Oxide ◽

Silver Oxide ◽

Oxide Interfaces ◽

Zinc Tin Oxide

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Analysis of Oxygen Segregation at Metal-Oxide Interfaces Using a New Lattice Monte Carlo Method

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.129.111 ◽

2007 ◽

Vol 129 ◽

pp. 111-117 ◽

Cited By ~ 2

Author(s):

Irina V. Belova ◽

Graeme E. Murch ◽

Nilindu Muthubandara ◽

Andreas Öchsner

Keyword(s):

Monte Carlo ◽

Monte Carlo Method ◽

Physical Properties ◽

Atomic Oxygen ◽

Oxide Interfaces ◽

Bulk Properties ◽

Ceramic Oxide ◽

Lattice Monte Carlo ◽

Metal Ceramic ◽

Constant Source

The presence of atomic oxygen at internal metal-ceramic oxide interfaces significantly affects the physical properties of the interfaces which in turn affects the bulk properties of the material. We address this problem for the case of a constant source of oxygen at the surface and periodic arrangements of ceramic oxide (MgO) inclusions embedded in a metal (Ag) matrix. We simulate the time-dependence of the oxygen concentration into the material using a newly developed lattice Monte Carlo method that takes into account a constant source of diffusant.

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