Structural damage response of lanthanum and yttrium aluminate crystals to nuclear collisions and electronic excitation:Threshold assessment of irradiation damage

Yong Liu ¹Xinqing Han ¹Qing Huang ²Miguel L.Crespillo ³Peng Liu ¹Eva Zarkadoula ⁴Xuelin Wang¹

扫码查看

作者信息

1. Institute of Frontier and Interdisciplinary Science and Key Laboratory of Particle Physics and Particle Irradiation (MOE),Shandong University,Qingdao 266237,China
2. Shanghai Institute of Applied Physics,Chinese Academy of Sciences (CAS),Shanghai 201800,China
3. Department of Materials Science & Engineering,University of Tennessee,Knoxville,TN 37996,United States
4. Materials Science & Technology Division,Oak Ridge National Laboratory,Oak Ridge,TN 37831,United States
折叠

Abstract

A comparative analysis is performed on the structural damage response and associated mechanisms in lanthanum aluminate and yttrium aluminate crystals under various irradiation conditions by a combi-nation of experimental and theoretical approaches.Under low-energy Au+ irradiation,the damage accu-mulation curve shows a higher damage rate for LaAlO3 crystals than YAlO3 crystals.The relatively low irradiation tolerance of LaAlO3 to the action of nuclear collisions is ascribed to the large amorphization cross-section and effective cross-section for defect-stimulated amorphization.Under swift Ar12+,Ni19+and Kr17+ irradiation with different ion energies and velocities,the formed highly-disordered/amorphous latent tracks with different morphologies in pristine and predamaged crystals are discussed,and the corresponding electronic energy loss and lattice temperature thresholds are quantitatively determined.Compared to YAlO3,LaAlO3 exhibits lower sensitivity and higher damage tolerance to the electronic en-ergy loss process,attributing to its relatively high recrystallization efficiency during the rapid quench-ing process.Furthermore,the introduction of lattice defects into LaAlO3 and YAlO3 crystals considerably enhances the sensitivity and intensity of thermal spike response to the electronic energy loss,and the induced effective modification of track morphologies demonstrates the synergistic effect between the electronic energy loss and pre-existing defects created by nuclear collisions.In this case,even under the action of electronic energy loss below the threshold,the lattice temperature in the nuclear-collision damaged crystalline system could still meet the criterion for track production.The irradiation energy deposited to atoms and induced lattice temperature evolution discussed in this work provide a deeper insight into the complex processes involved in irradiation-induced latent track behaviors.

Key words

Nuclear energy loss/Electronic energy loss/Synergistic effect/Irradiation damage/Latent ion track

引用本文复制引用

基金项目

National Natural Science Foundation of China(11875038)

National Natural Science Foundation of China(11775135)

National Laboratory of Heavy Ion Accelerator in Lanzhou()

State Key Laboratory of Nuclear Physics and Technology,Peking University()

Young Scholars program of Shandong University()

Youth Innovation Promotion Association CAS(2019262)

U.S.Department of Energy,Of-fice of Science,Basic Energy Sciences,Materials Sciences and Engi-neering Division()

University of Tennessee Governor's Chair program()

出版年

2021

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCDCSCDSCI

影响因子：0.657

ISSN：1005-0302

参考文献量64

段落导航