A comparative study of topology and local disorder in Y2O3, Y2TiO5, and Y2Ti2O7 crystals

被引：5

作者：

Dholakia, Manan ^{[1
]}

Chandra, Sharat ^{[1
]}

Jaya, S. Mathi ^{[1
]}

机构：

[1] Indira Gandhi Ctr Atom Res, Mat Sci Grp, HBNI, Kalpakkam 603102, Tamil Nadu, India

来源：

JOURNAL OF APPLIED PHYSICS | 2019年 / 125卷 / 02期

关键词：

IRRADIATION-INDUCED AMORPHIZATION; RADIATION-INDUCED AMORPHIZATION; DISPLACEMENT CASCADES; MOLECULAR-DYNAMICS; FE; CONNECTIVITY; TEMPERATURE; RESISTANCE; NETWORKS; GEOMETRY;

D O I：

10.1063/1.5059351

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Y2O3, Y2TiO5, and Y2Ti2O7 precipitates are the key ingredients of the oxide dispersion strengthened (ODS) steels, and a study of their irradiation behavior and amorphization resistance is very important for the nuclear industry. We perform molecular dynamics simulations of disorder induced by displacement cascades and by equilibrating the systems at high temperatures and study the topology and defect morphology using various analyses. The studies show that a radiation damaged and a melted system can have very different topologies, and this difference can be effectively discerned by a topology based analysis. It is shown that all the three systems are constrained and quite resistant to amorphization; however, Y2O3 and Y2Ti2O7 have a better resistance to amorphization as compared to Y2TiO5. Published under license by AIP Publishing.

引用

页数：10

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