کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9595089 | 1507966 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Evolution kinetics of sp2 ordering in tetrahedral amorphous carbon films induced by electron irradiation
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کلمات کلیدی
Crystallization - بلورسازیElectron bombardment - بمباران الکترونیGrowth - رشدElectron energy loss spectroscopy (EELS) - طیف سنجی از دست دادن انرژی الکترون (EELS)Amorphous thin films - فیلم های نازک AmorphousElectron microscopy - میکروسکوپ الکترونیElectron–solid diffraction - پراش الکترونی جامدCarbon - کربن
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Evolution kinetics of sp2 ordering in tetrahedral amorphous carbon films induced by electron irradiation Evolution kinetics of sp2 ordering in tetrahedral amorphous carbon films induced by electron irradiation](/preview/png/9595089.png)
چکیده انگلیسی
The kinetics of sp3 to sp2 structural conversion in tetrahedral amorphous carbon (ta-C) films induced by sample irradiation with an electron beam of transmission electron microscope was studied by systematically measuring the temporal evolution of the graphitic phase detected by electron energy loss spectroscopy (EELS). The results analyzed in the framework of the Johnson-Mehl-Avrami model indicates that the phase front velocity increases in proportion to the irradiation beam current density, providing an experimental support for the notion that the effect is caused by an electronic excitation effect. It was inferred from the experimentally assessed kinetic order index that the three-dimensional growth of graphitic phases is enhanced by electronic excitations. Possible microscopic mechanisms are discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 593, Issues 1â3, 20 November 2005, Pages 161-167
Journal: Surface Science - Volume 593, Issues 1â3, 20 November 2005, Pages 161-167
نویسندگان
S. Liang, A. Yajima, S. Abe, Y. Mera, K. Maeda,