کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1679062 1009995 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mapping inelastic intensities in diffraction patterns of magnetic samples using the energy spectrum imaging technique
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Mapping inelastic intensities in diffraction patterns of magnetic samples using the energy spectrum imaging technique
چکیده انگلیسی

We present the quantitative measurement of inelastic intensity distributions in diffraction patterns with the aim of studying magnetic materials. The relevant theory based on the mixed dynamic form factor (MDFF) is outlined. Experimentally, the challenge is to obtain sufficient signal for core losses of 3d magnetic materials (in the 700–900 eV energy-loss range). We compare two experimental settings in diffraction mode, i.e. the parallel diffraction and the large-angle convergent-beam electron diffraction configurations, and demonstrate the interest of using a spherical aberration corrector. We show how the energy spectrum imaging (ESI) technique can be used to map the inelastic signal in a data cube of scattering angle and energy loss. The magnetic chiral dichroic signal is measured for a magnetite sample and compared with theory.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultramicroscopy - Volume 108, Issue 5, April 2008, Pages 393–398
نویسندگان
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