کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1678277 1009936 2009 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Grain boundary enrichment in the FePt polymorphic A1 to L10 phase transformation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
Grain boundary enrichment in the FePt polymorphic A1 to L10 phase transformation
چکیده انگلیسی

A series of Fe54±1Pt46±1 thin films have been sputter-deposited and annealed at various times and temperatures to facilitate the A1 to L10 polymorphic phase transformation. The annealing times span one minute to tens of minutes over temperatures of 300–800 °C. The films were characterized by X-ray and electron diffraction and atom probe tomography. This time–temperature regime provides ‘snap-shots’ into the compositional segregation evolution at the grain boundaries during the polymorphic phase transformation. The as-deposited A1 phase showed a preferential segregation of Pt to the grain boundaries. The reduction of Pt enrichment at the boundaries was observed for all L10 ordered films.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultramicroscopy - Volume 109, Issue 5, April 2009, Pages 606–611
نویسندگان
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