کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8041226 1518683 2014 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Swift heavy ion track formation in Gd2Zr2−xTixO7 pyrochlore: Effect of electronic energy loss
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Swift heavy ion track formation in Gd2Zr2−xTixO7 pyrochlore: Effect of electronic energy loss
چکیده انگلیسی
The morphology of swift heavy ion tracks in the Gd2Zr2−xTixO7 pyrochlore system has been investigated as a function of the variation in chemical composition and electronic energy loss, dE/dx, over a range of energetic ions: 58Ni, 101Ru, 129Xe, 181Ta, 197Au, 208Pb, and 238U of 11.1 MeV/u specific energy. Bright-field transmission electron microscopy, synchrotron X-ray diffraction, and Raman spectroscopy reveal an increasing degree of amorphization with increasing Ti-content and dE/dx. The size and morphology of individual ion tracks in Gd2Ti2O7 were characterized by high-resolution transmission electron microscopy revealing a core-shell structure with an outer defect-fluorite dominated shell at low dE/dx to predominantly amorphous tracks at high dE/dx. Inelastic thermal-spike calculations have been used together with atomic-scale characterization of ion tracks in Gd2Ti2O7 by high resolution transmission electron microscopy to deduce critical energy densities for the complex core-shell morphologies induced by ions of different dE/dx.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 336, 1 October 2014, Pages 102-115
نویسندگان
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