The effects of temperature and dose rate on the properties of irradiation induced void superlattices

Schneider, Annemarie; Zhang, Yongfeng; Jiang, Chao; Gan, Jian

doi:10.1016/j.mtla.2022.101373

Cited by 3 publications

(2 citation statements)

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“…The newly proposed theory also implies an equivalency between logP and 1/T, similar to the case for void swelling (Mansur, 1994). Such an equivalency has been proven by LKMC simulations, which showed that both the superlattice parameter and the critical dose of formation remained invariant upon proportionally varying logP and 1/T (Schneider et al, 2022). A best condition for superlattice formation has been identified by correlating logP with 1/T for the highest degree of ordering.…”

Section: Thermodynamics-driven Instabilitysupporting

confidence: 54%

“…First, a L increases with temperature because of increasing vacancy mobility (i.e., diffusivity) with temperature. Although the reaction term Q also increases with temperature, the effect is secondary (Schneider et al, 2022). The prediction has been validated by both experiments and LKMC simulations, which were designed to be consistent with the theoretical formulation, as shown in Figure 5B.…”

Section: Thermodynamics-driven Instabilitymentioning

confidence: 64%

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A review of void and gas bubble superlattices self-organization under irradiation

Zhang

2023

Front. Nucl. Eng.

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Irradiation by high-energy particles has been well known as a destructive force that “damages” crystalline materials by creating lattice defects. One surprising outcome from irradiation is the self-organization of void superlattices and gas bubble superlattices in various materials under irradiation. While these superlattices exhibit crystal structures that mimic atomic lattices, their self-organization takes place in far-from-equilibrium environment. A thermodynamic driving force that entails ordering is either absent or yet to be identified. In the past few decades, extensive research efforts have been made to generate such superlattices and to discern their formation mechanisms. While a consensus is yet to reach, these studies have substantially enriched our understanding on defect evolution and self-organization under irradiation. Appending previous reviews that are mostly done two decades ago, this article presents a comprehensive review of new experimental, theoretical, and simulational studies of void and gas bubble superlattices in the past two decades. An in-depth discussion on the formation mechanisms and their implications on superlattice properties is provided for the purpose of encouraging future studies.

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Section: Thermodynamics-driven Instabilitysupporting

confidence: 54%

Section: Thermodynamics-driven Instabilitymentioning

confidence: 64%