Optical characteristics of self-assembled InAs quantum dots with InGaAs grown by a molecular beam epitaxy

Kim, Jin-Soo; Oh, Dae Kon; Yu, P. W.; Leem, Jae‐Young; Lee, Joo In; Lee, Cheul-Ro

doi:10.1016/j.jcrysgro.2003.09.017

Cited by 83 publications

(7 citation statements)

References 16 publications

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“…Throughout the growth in BFO ceramics, the tiny zones are in a transition state but stable as well. 33,34 They would disappear with extending heating or increasing the temperature to release the strain in distorted lattices by the formation of dislocation, as Fig. 5b shows.…”

Section: Fine Structure Analysismentioning

confidence: 94%

Lattice mismatch induced strained phase for magnetization, exchange bias and polarization in multiferroic BiFeO3

et al. 2013

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Section: Fine Structure Analysismentioning

confidence: 94%

Lattice mismatch induced strained phase for magnetization, exchange bias and polarization in multiferroic BiFeO3

et al. 2013

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“…Kim et al [240] presented a eutectic phase field model with isotropic and anisotropic interface energies and kinetic coefficients. The isotropic model was used to simulate two-dimensional lamellar eutectic growth in binary eutectic alloys at eutectic and hyper-eutectic alloy compositions.…”

Section: Three-phase Transformations: Eutectic Peritectic and Monotementioning

confidence: 99%

The phase field technique for modeling multiphase materials

2008

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This paper reviews methods and applications of the phase field technique, one of the fastest growing areas in computational materials science. The phase field method is used as a theory and computational tool for predictions of the evolution of arbitrarily shaped morphologies and complex microstructures in materials. In this method, the interface between two phases (e.g. solid and liquid) is treated as a region of finite width having a gradual variation of different physical quantities, i.e. it is a diffuse interface model. An auxiliary variable, the phase field or order parameter φ( x), is introduced, which distinguishes one phase from the other. Interfaces are identified by the variation of the phase field. We begin with presenting the physical background of the phase field method and give a detailed thermodynamical derivation of the phase field equations. We demonstrate how equilibrium and non-equilibrium physical phenomena at the phase interface are incorporated into the phase field methods. Then we address in detail dendritic and directional solidification of pure and multicomponent alloys, effects of natural convection and forced flow, grain growth, nucleation, solid-solid phase transformation and highlight other applications of the phase field methods. In particular, we review the novel phase field crystal model, which combines atomistic length scales with diffusive time scales. We also discuss aspects of quantitative phase field modeling such as thin interface asymptotic analysis and coupling to thermodynamic databases. The phase field methods result in a set of partial differential equations, whose solutions require time-consuming large-scale computations and often limit the applicability of the method. Subsequently, we review numerical approaches to solve the phase field equations and present a finite difference discretization of the anisotropic Laplacian operator.

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“…The factors which control the grain growth can be investigated at microscopic and mesoscopic scales by means of the phase-field method, which can incorporate the complex interactions between the physical mechanisms at the atomistic scale and the parameters of fabrication process on the macroscale. During the past two decades, the phase-field approach has been employed to simulate grain growth phenomena in various polycrystalline materials [3][4][5][6][7][8][9]. Fan and Chen first suggested a multi-phase-field algorithm for the grain growth [3,4] based on a Ginzburg-Landau-type polynomial potential.…”

Section: Introductionmentioning

confidence: 99%

“…The model was implemented in the software MICRESS [25] and OpenPhase [26] with parallel coding techniques [27,28]. Further, Kim et al [7,8] have developed an efficient computation scheme for the phase-field simulations of ideal grain growth following the MPF approach. This scheme was applied in many works for the simulation of the grain growth of multiple orientation with anisotropy and misorientation dependencies of the surface energy [29][30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Phase-field modeling of pores and precipitates in polycrystalline systems

Kundin¹,

Sohaib²,

Schiedung³

et al. 2018

Modelling Simul. Mater. Sci. Eng.

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In this work, we develop an efficient phase-field approach to simulate the grain growth in polycrystalline ceramic materials in the presence of pores with various mobilities and diffusion coefficients. The multi-phase-field model is coupled to the Cahn–Hilliard equation for pore dynamics by interaction functions which describe the interaction of pores with grain boundaries. Two types of the model are suggested with one and two order parameters responsible for the pores. We also show that the model can be applied to the simulation of the interaction of the grain boundaries with coherent and non-coherent particles. The parameters of the model allow us to reproduce the equilibrium dihedral angle in the triple-junction of a pore or a particle and a grain boundary. A drag velocity of the grain boundary in the presence of pores or precipitates was also measured for various diffusion coefficients and grain boundary mobilities. The effects of the pore dynamics on the grain size evolution in ceramic materials was investigated and compared with reported theoretical predictions and experimental data.

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Optical characteristics of self-assembled InAs quantum dots with InGaAs grown by a molecular beam epitaxy

Cited by 83 publications

References 16 publications

Lattice mismatch induced strained phase for magnetization, exchange bias and polarization in multiferroic BiFeO3

Lattice mismatch induced strained phase for magnetization, exchange bias and polarization in multiferroic BiFeO3

The phase field technique for modeling multiphase materials

Phase-field modeling of pores and precipitates in polycrystalline systems

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