کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8154047 | 1524769 | 2018 | 26 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of dipolar interaction in FINEMET ribbons through longitudinally driven magneto-impedance effect
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موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
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چکیده انگلیسی
The magnetic dipolar interactions among multiple FINEMET ribbons have been studied by longitudinally driven magneto-impedance effect (LDMI) and hysteresis loops in this paper. The effect of dipolar fields on LDMI apparently expands the “bell” magneto-impedance profiles and raises its characteristic frequency. This is essentially correlated with the domain nucleation process under the combined effect of ac driving field and dc external field. A theoretical model was utilized to explicate the LDMI variation with the number of ribbons N. Basically, the nucleation field varied linearly with N. The influence of the frequency of ac current causes the increase of the nucleation field by adding a term Heâ¼f0.38 before 4â¯MHz, but the dipolar field barely decreases with ac current. At frequency of 10â¯kHz, the dipolar field is fitted to be about 0.69 Oe, and the geometric factor can be estimated to be 5.60â¯Ãâ¯10â5. Additionally the nucleation field reduces slightly due to the compensation of the alternating field, while the LDMI ratio changes obviously. The results indicate that LDMI can be employed as a sensitive tool to reveal the dipolar interaction in FINEMET ribbons and facilitate the design of the materials for magnetic devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 452, 15 April 2018, Pages 502-506
Journal: Journal of Magnetism and Magnetic Materials - Volume 452, 15 April 2018, Pages 502-506
نویسندگان
H.L. Pan, X. Li, Q. Zhang, Y.P. Su, J.T. Wang, W.H. Xie, Z.J. Zhao,