length Enhanced diffusion in thin-film Cu-Zr nanoglasses

被引：0

作者：

Rigoni, C. Aaron ^{[1
]}

Boltynjuk, Evgeniy ^{[2
]}

Voigt, Hendrik ^{[1
]}

Roesner, Harald ^{[1
]}

Tyler, Bonnie ^{[3
,4
]}

Hahn, Horst ^{[2
,5
]}

Divinski, Sergiy, V ^{[1
]}

Wilde, Gerhard ^{[1
]}

机构：

[1] Univ Munster, Inst Mat Phys, Wilhelm Klemm Str 10, D-48149 Munster, Germany

[2] Karlsruhe Inst Technol, Inst Nanotechnol, Hermann Von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany

[3] Univ Munster, Phys Inst, Wilhelm Klemm Str 10, D-48149 Munster, Germany

[4] Univ Munster, Ctr Soft Nanosci, Wilhelm Klemm Str 10, D-48149 Munster, Germany

[5] Univ Oklahoma, Sch Sustainable Chem Biol & Mat Engn, 201 Stephenson Pkwy, Norman, OK 73019 USA

来源：

ACTA MATERIALIA | 2024年 / 265卷

关键词：

Nanoglass; Diffusion; Ion beam sputtering; ToF-SIMS; Magnetron sputtering; Excess free volume; Relaxation; TRACER DIFFUSION; STRUCTURAL RELAXATION; SELF-DIFFUSION; FREE-VOLUME; THERMAL-STABILITY; METALLIC GLASSES; ATOMIC-STRUCTURE; STATE; RELEVANCE; KINETICS;

D O I：

10.1016/j.actamat.2023.119634

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Tracer measurements with both radioactive, 55Fe, as well as natural, mainly 56Fe, isotopes are used to investigate Fe diffusion in a Cu-Zr nanoglass in comparison to their diffusion rates in a homogeneous amorphous counterpart. The columnar-structured nanoglass and the homogeneous amorphous films are synthesized using radio-frequency magnetron sputtering. Ion beam sputtering (with the 55Fe radioisotope) and time-of-flight secondary ion mass spectroscopy (with natural Fe) are used for the diffusion experiments. Remarkably, faster Fe diffusion is observed in the columnar nanoglasses, supporting the concept of glass- glass interfaces. The relative diffusion enhancement is explained within the excess free volume concept that is supported by structural investigations using transmission electron microscopy. For the first time, the relaxation dynamics in a nanoglass as well as in a homogeneous thin-film glass of identical composition are evaluated via time-dependent diffusion measurements.

引用

页数：8

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