PREFERENTIAL RADIATION-DAMAGE OF THE OXYGEN SUBLATTICE IN YBA2CU3O7 - A MOLECULAR-DYNAMICS SIMULATION

被引：18

作者：

CUI, FZ ^{[1
]}

XIE, J ^{[1
]}

LI, HD ^{[1
]}

机构：

[1] TSING HUA UNIV,DEPT MAT SCI & ENGN,BEIJING 100084,PEOPLES R CHINA

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.46.11182

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the energetic ionic-displacement processes in orthorhombic YBa2Cu3O7 by carrying out a molecular-dynamics simulation based on a pair potential mode. The model crystal contains 3328 atoms. In calculating the time evolution of the partial radial pair-distribution functions during the atomic-collision cascade, we observed preferential radiation damage of the oxygen sublattice in YBa2Cu3O7. Detailed features of the preferential radiation damage in the lattice structure were revealed. Oxygen focusing whose displacement threshold may be as low as about 10 eV or less is found to play a dominant role in preferential-radiation-damage processes.

引用

页码：11182 / 11185

页数：4

共 24 条

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