کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1804088 1024641 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Transmission electron microscopy of Co2(Cr1−xFex)Al sputtered films and their magnetic tunneling junctions
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Transmission electron microscopy of Co2(Cr1−xFex)Al sputtered films and their magnetic tunneling junctions
چکیده انگلیسی
The microstructures of Co2FeAl and Co2(Cr0.4Fe0.6)Al sputtered films and of their magnetic tunnel junctions (MTJs) have been investigated to discuss the possible reasons for an unexpectedly low tunneling magnetoresistance (TMR). The structure of the Co2FeAl film changed from B2 to L21 with increasing substrate temperature, while that of the Co2(Cr0.4Fe0.6)Al film remained B2 up to 500 °C. The thermodynamically predicted phase separation was not observed in the films. The low TMR values obtained from the MTJs using the Co2FeAl and Co2(Cr0.4Fe0.6)Al films are attributed to the low-spin polarization expected from the low degree of order in these films. The TMR values depend sensitively on the interfacial structure of the tunnel junctions when the degree of order of the film is low.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 313, Issue 2, June 2007, Pages 378-382
نویسندگان
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