Modification of LiF structure by irradiation with swift heavy ions under oblique incidence

International Conference on Functional Materials and Nanotechnologies 2013

材料科学;物理学

Manika, I.^1 ; Maniks, J.^1 ; Zabels, R.^1 ; Schwartz, K.^2 ; Grants, R.^1 ; Dauletbekova, A.^3 ; Rusakova, A.^3 ; Zdorovets, M.^4

Institute of Solid State Physics, University of Latvia, Riga, Latvia^1

GSI Helmholtz Centre, Planckstr 1, 64291 Darmstadt, Germany^2

L.N. Gumilyov Eurasian National University, Astana, Kazakhstan^3

Institute of Nuclear Physics, Kazakhstan^4

关键词: Chemical etching;    Complex structure;    Incidence angles;    Normal incidence;    Oblique incidence;    Structural modifications;    Structural studies;    Swift heavy ions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/49/1/012011/pdf
DOI  :  10.1088/1757-899X/49/1/012011

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The structural modifications of LiF irradiated with swift heavy ions under oblique angles have been investigated using AFM, SEM, chemical etching, nanoindentation and optical absorption spectroscopy. LiF crystals were irradiated under incidence angles of 30 and 70 degrees with 2.2 GeV Au (fluence 57×l011ions-cm2) and 150 MeV Kr ions (fluence 1012-1014ions·cm-2). Structural study on sample cross-sections shows that two damage regions-(1) nanostructured zone and (2) dislocation-rich zone, which are typical for irradiations at normal incidence, appear also in samples irradiated under oblique angles. However in the latter case a more complex structure is formed that leads to stronger ion-induced hardening.