Investigation of the influence of irradiation with Fe+7 ions on structural properties of AlN ceramics

被引：28

作者：

Kozlovskiy, A. ^{[1
,2
,3
]}

Dukenbayev, K. ^{[4
]}

Ivanov, I. ^{[1
]}

Kozin, S. ^{[1
]}

Aleksandrenko, V. ^{[1
]}

Kurakhmedov, A. ^{[1
]}

Sambaev, E. ^{[1
]}

Kenzhina, I. ^{[1
,2
]}

Tosi, D. ^{[4
]}

Loginov, V. ^{[5
]}

Zdorovets, M. ^{[1
,2
,6
]}

机构：

[1] Inst Nucl Phys Republ Kazakhstan, Astana, Kazakhstan

[2] LN Gumilyov Eurasian Natl Univ, Astana, Kazakhstan

[3] Natl Lab Astana, Astana, Kazakhstan

[4] Nazarbayev Univ, Sch Engn, Astana, Kazakhstan

[5] Joint Inst Nucl Res, FLNR, Dubna, Russia

[6] Ural Fed Univ, Ekaterinburg, Russia

来源：

MATERIALS RESEARCH EXPRESS | 2018年 / 5卷 / 06期

关键词：

ceramic materials; heavy ions; hillocks; crystal surface; radiation defects; SWIFT HEAVY-IONS; GRAIN-GROWTH; RADIATION; APPROXIMATIONS; EVOLUTION; ELECTRON; OXIDES; DAMAGE; FILMS;

D O I：

10.1088/2053-1591/aac7ba

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The paper presents the results of investigation of defect formation in AlN ceramics under Fe+7 ion irradiation with a fluence from 1 x 10(11) to 1 x 10(14) ion cm(-2) . The change in the main crystallographic characteristics, the decrease in the magnitude of Griffiths criterion, and the increase in the average voltage as a result of irradiation are caused by the appearance of additional defects in the structure and their further evolution leading to a change in the degree of crystallinity. For samples irradiated with Fe+7 ions to a dose of 1 x 10(11) ion cm(-2) , the formation of pyramidal hillocks is observed on the surface, whose average height is 17-20 nm. An increase in the irradiation dose leads to an increase in chillocks size and their density. At the same time, at large irradiation doses, the formation of conglomerates of chyllocks and grooves on the samples surface is observed. The change in surface morphology, the formation of chyllocks on the ceramic surface, and the dependence of the change in crystallographic characteristics during irradiation make it possible to unambiguously associate the formation of radiation defects in the structure of the ceramic with energy losses in elastic and inelastic interactions of iron ions with lattice atoms.

引用

页数：10

共 33 条

[1] A fast grain-growth mechanism revealed in nanocrystalline ceramic oxides [J].