کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1594054 1515653 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Structure-independent universality of Barkhausen criticality in iron nitride thin films
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد دانش مواد (عمومی)
پیش نمایش صفحه اول مقاله
Structure-independent universality of Barkhausen criticality in iron nitride thin films
چکیده انگلیسی

Discrete and jerky jumps during the process of magnetization reversal in ferromagnetic systems cause Barkhausen intermittency. We have investigated critical scaling behavior of the Barkhausen avalanche of 2-dimensional γ-Fe4N thin films using a magneto-optic microscope magnetometer (MOMM) capable of time-resolved magnetic domain images. A statistical analysis of the fluctuating size of Barkhausen jumps from numerous repetitive experiments shows a power-law scaling behavior in the ferromagnetic iron nitride system exhibiting a critical exponent value of τ=1.02τ=1.02 within the experimental error. The value of critical exponent is found to manifest universality irrespective of the degree of texture of the film induced by annealing temperature.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Communications - Volume 150, Issues 27–28, July 2010, Pages 1169–1172
نویسندگان
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