کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1803201 | 1024612 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Modelling the sensitivity of infrared emissivity of magnetic thin films to giant magnetoresistance
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کلمات کلیدی
85.60.G81.70.Fy75.70.Cn78.67.Pt78.20.Ci73.61.At07.07.Df42.79.PwMagnetorefractive effect75.47.Np75.47.De73.50.Jt - 73.50 یورو78.20.Ls - 78.20 لیتر78.66.Bz - 78.66 ب.ظRemote sensing - سنجش از راه دورEmissivity - قابلیت انتشار، گسیلندگیInfrared - مادون قرمز (فروسرخ)Giant magnetoresistance - مقاومت مغناطیسی غول پیکر
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The correlation between emissivity and giant magnetoresistance (GMR) in magnetic thin films is investigated at infrared (IR) wavelengths using a thin-film model of emissivity. The sensitivity of emissivity to GMR is shown to depend upon film thickness, and agrees excellently with bulk-material results for films thicker than the material skin depth. However, for films thinner than the skin depth the sensitivity to GMR is shown to weaken. In addition, at mid-to-far IR wavelengths the spectral dependence of the correlation is investigated using a modified Drude-type expression for the refractive index combined with the thin-film model. This is applied to a multilayered GMR material, and the sensitivity of emissivity to GMR is shown to have a similar spectral dependence to that of the magnetorefractive effect. An analytical interpretation in terms of skin depth is also developed at long wavelengths, and shown to agree excellently with thin-film simulations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 5, March 2009, Pages 354-360
Journal: Journal of Magnetism and Magnetic Materials - Volume 321, Issue 5, March 2009, Pages 354-360
نویسندگان
S.M. Stirk, S.M. Thompson, J.A.D. Matthew,