Mossbauer studies of 57Fe implantation in metal Ta and Mo

被引：9

作者：

Andrianov, V. A. ^{[1
]}

Bedelbekova, K. A. ^{[2
]}

Ozernoy, A. N. ^{[2
]}

Vereshchak, M. F. ^{[2
]}

Manakova, I. A. ^{[2
]}

机构：

[1] Lomonosov Moscow State Univ, Scobeltsyn Inst Nucl Phys, Leninskie Gory 1,2,Moscow GSP 1, Moscow 119991, Russia

[2] Inst Nucl Phys Republ Kazakhstan, Alma Ata 050032, Kazakhstan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2020年 / 475卷

关键词：

Implantation; Mossbauer spectroscopy; X-ray diffraction; SRIM program; Radiation damage; RADIATION-DAMAGE; BCC METALS; SPECTROSCOPY;

D O I：

10.1016/j.nimb.2020.04.035

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The effect of Fe-57 ions implantation on properties of structural materials of atomic industry of metallic Ta and Mo was studied using Fe-57 Mossbauer spectroscopy and X-ray diffraction. The 57Fe ion beam had energy of 1 MeV and fluence of 5.10(16) ions/cm(2). The mean concentration of implanted Fe atoms calculated using the SRIM program was approximate to 2 at. %. The parameter DPA for both materials exceeded 200. Mossbauer studies showed formation of two main positions of Fe atoms in Mo and Ta designated as "singlet" and "doublet" positions. The main "singlet" position in molybdenum (similar to 90%) is a solid solution of Fe atoms in Mo. In tantalum, Fe atoms form defect interstitial positions (similar to 80%) with lower symmetry. Additional "doublet" positions of Fe in Mo and Ta are apparently related to the formation of the clusters Fe + vacancy or localization of Fe atoms at dislocation boundaries.

引用

页码：71 / 76

页数：6

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