Multiple defects in copper and silver

Lam, Nghi Q.; Doan, N.V.; Dagens, L.

doi:10.1088/0305-4608/15/4/006

Cited by 45 publications

(16 citation statements)

References 19 publications

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“…It is quite evident from various studies that clustering of vacancies significantly decreases migration barriers. Previous work by Lam et al [22] on FCC Cu showed that the defect migration barrier decreased from 0.82 eV to 0.55 eV from mono to di-vacancy. Similarly, Sabochick and Yip [23] showed that the barriers further decrease to 0.56 eV and 0.38 eV in tri and tetravacancy clusters.…”

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confidence: 85%

Formation and growth of stacking fault tetrahedra in Ni via vacancy aggregation mechanism

Aidhy

Jin

et al. 2016

Scripta Materialia

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Using molecular dynamics simulations, the formation and growth of stacking fault tetrahedra (SFT) are captured by vacancy cluster diffusion and aggregation mechanisms in Ni. The vacancytetrahedron acts as a nucleation point for SFT formation. Simulations show that perfect SFT can grow to the next size perfect SFT via a vacancy aggregation mechanism. The stopping and range of ions in matter (SRIM) calculations and transmission electron microscopy (TEM) observations reveal that SFT can form farther away from the initial cascade-event locations, indicating the operation of diffusion-based vacancy-aggregation mechanism. © 2015. This manuscript version is made available under the Elsevier user license

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confidence: 85%

Formation and growth of stacking fault tetrahedra in Ni via vacancy aggregation mechanism

Aidhy

Jin

et al. 2016

Scripta Materialia

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“…In the present analysis, we shall apply the method of moments [39,40] to solve NSWE, that is, Equation (12). The method of moments was developed by Vlasov et al [41] for the cubic Schrödinger equation (CSE) in 2D cylindrical symmetry and was applied for the self-focusing phenomenon.…”

Section: Self-focusing and Self-compression Of The Laser Pulsementioning

confidence: 99%

Dynamics of quadruple laser pulses in under‐dense plasmas

Gupta

Singh

2017

Contrib. Plasma Phys

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An analysis of dynamics of a quadruple laser pulse propagating through an under‐dense plasma is presented. The Drude model is used to derive the dielectric function of the plasma for relativistic non‐linearity in the electron mass. An approximate numerical solution of the nonlinear Schrödinger wave equation for the field of the laser beam is obtained with the help of the moment theory approach in the Wentzel–Kramers–Brillouin (WKB) approximation. Particular emphases are placed on the variations of spot size, pulse width, and longitudinal phase delay with the distance of propagation through the plasma. Self‐trapping of the laser pulse is also investigated.

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“…Without ® tting to any experimental data this potential reproduced very well bulk properties, such as phonon dispersion curves and structural factor of the liquid, whereas applied to a vacancy it gave an unphysically low value of the formation energy. It should be mentioned that in the case of interstitial-type defects, for which these e ects are not expected to be so strong, the same potential was used to simulate self-interstitial defects in pure Al (Lam et al 1983) and interstitial± solute defects in aluminium-based alloys (Lam et al 1981). It should be mentioned that in the case of interstitial-type defects, for which these e ects are not expected to be so strong, the same potential was used to simulate self-interstitial defects in pure Al (Lam et al 1983) and interstitial± solute defects in aluminium-based alloys (Lam et al 1981).…”

Section: §1 Introductionmentioning

confidence: 99%

“…The defect formation energy, E f d , of a vacancy (d = v) and a self-interstitial (d = i) were determined using the standard formula (see, for example, Lam et al (1983))…”

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Interionic potential model for the Al-Li system

MIKHIN¹

1999

Philosophical Magazine A

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Semi-empirical interionic potentials based on the second-order pseudopotential scheme are proposed for computer simulation of the defect kinetics in the Al± Li system. By using the reduced e ective valence, we succeeded in satisfactorily reproducing both bulk and monovacancy properties in Al. The obtained picture on point defects in Al and Li is consistent with both experiment and ab initio pseudopotential calculations. However, the shortcomings of the pair potential model do not allow one to achieve good quantitative results. Applied to the Li substitutional defect in the Al matrix, the model is capable of describing some qualitative features of the vacancy± impurity and impurity± impurity interactions in accordance with the ab initio calculations.

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Multiple defects in copper and silver

Cited by 45 publications

References 19 publications

Formation and growth of stacking fault tetrahedra in Ni via vacancy aggregation mechanism

Formation and growth of stacking fault tetrahedra in Ni via vacancy aggregation mechanism

Dynamics of quadruple laser pulses in under‐dense plasmas

Interionic potential model for the Al-Li system

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