کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1481985 1510501 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Length scale effects on relaxations in metallic glasses
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
پیش نمایش صفحه اول مقاله
Length scale effects on relaxations in metallic glasses
چکیده انگلیسی

The relaxation mechanism of amorphous thin films (PdCuSi) is studied by mechanical loss spectroscopy using the double-paddle-oscillator at 5.4 kHz. As in bulk material we can identify the primary (α) and secondary relaxation modes (β) for thick films (200 nm). By reducing the film thickness below 30 nm the loss of the secondary relaxation is vanishing. We discuss the results by the Eshelby-stress field surrounding the string-like excitation reaching the free surface which looks like a merging of the primary relaxation and the secondary relaxation due to size effects.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Non-Crystalline Solids - Volume 356, Issues 6–8, 1 March 2010, Pages 340–343
نویسندگان
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