Surface defects in Al2O3 and MgO irradiated with high-energy heavy ions

被引：27

作者：

Skuratov, VA ^{[1
]}

Zinkle, SJ

Efimov, AE

Havancsak, K

机构：

[1] Joint Inst Nucl Res, Ctr Appl Phys, Flerov Lab Nucl React, Dubna 141980, Russia

[2] Oak Ridge Natl Lab, Div Met & Ceram, Oak Ridge, TN 37831 USA

[3] Eotvos Lorand Univ, Dept Solid State Phys, H-1117 Budapest, Hungary

来源：

SURFACE & COATINGS TECHNOLOGY | 2005年 / 196卷 / 1-3期

基金：

俄罗斯基础研究基金会;

关键词：

heavy-ion irradiation; surface defects; surface topography; atomic force microscopy; ionizing energy loss; radiation damage; electron microscopy;

D O I：

10.1016/j.surfcoat.2004.08.095

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The structure of hillock-like defects on the surface of monocrystalline Al2O3 and MgO, induced by individual (0.5-3.4) MeV/amu Kr and Bi ions, has been studied as a function of ion energy, fluence, irradiation temperature and angle of ion incidence using scanning tunneling microscopy. It was found that mean hillock height on sapphire surface depends linearly on the incident electron stopping power and increases by two times on average when hillocks start to overlap. Noticeable changes in defect shape are registered only under strong deviation from normal beam incidence (more than 60 degrees) and no specific features (radial coherent mass transport outwards from the track core) typical for shock-wave-like mechanism were observed. Transmission electron microscopy characterization of Al2O3 irradiated with 710 MeV Bi ions showed no evidence that a bulk phase change could be responsible for nanoscale surface damage production. As a possible reason for hillock formation, the plastic deformation due to the defects created by the Coulomb explosion mechanism in the target subsurface layer is considered. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：56 / 62

页数：7

共 26 条

[1] Visualization by near-field microscopy of the impacts of swift heavy ions in amorphous metallic alloys [J].

Audouard, A ;

Mamy, R ;

Toulemonde, M ;

Szenes, G ;

Thomé, L .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1998, 146 (1-4) :217-221

[2]

BARANOV IA, 1988, USP FIZ NAUK+, V156, P477, DOI 10.1070/PU1988v031n11ABEH005646

[3] Crater formation by single ions in the electronic stopping regime:: Comparison of molecular dynamics simulations with experiments on organic films -: art. no. 094113 [J].

Bringa, EM ;

Johnson, RE ;

Papaléo, RM .

PHYSICAL REVIEW B, 2002, 65 (09) :1-8

[4] Crater formation by ion bombardment as a function of incident angle [J].

Bringa, EM ;

Hall, E ;

Johnson, RE ;

Papaléo, RM .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2002, 193 :734-738

[5] THERMOPHYSICAL PROPERTIES OF SAPPHIRE, ALN AND MGAL2O4 DOWN TO 70-K [J].

BURGHARTZ, S ;

SCHULZ, B .

JOURNAL OF NUCLEAR MATERIALS, 1994, 212 :1065-1068

[6] Nanoscale modification of silicon surfaces via Coulomb explosion [J].

Cheng, HP ;

Gillaspy, JD .

PHYSICAL REVIEW B, 1997, 55 (04) :2628-2636

[7] Free-surface deformation of irradiated solids [J].

Colin, J ;

Lesueur, D ;

Grilhé, J .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 2001, 81 (04) :857-866

[8] Surface tracks by MeV C60 impacts on mica and PMMA [J].

Dobeli, M ;

Ames, F ;

Musil, CR ;

Scandella, L ;

Suter, M ;

Synal, HA .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 1998, 143 (04) :503-512

[9]

DUFOUR C, 2002, EUNITT WORKSH ION TR, P46

[10] Track formation in amorphous Fe0.55Zr0.45 alloys irradiated by MeV C60 ions:: Influence of intrinsic stress on induced surface deformations [J].

Girard, JC ;

Michel, A ;

Tromas, C ;

Jaouen, C ;

Della-Negra, S .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2003, 209 :85-92

← 1 2 3 →