کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1785787 1023394 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Magnetic resonance absorption in isolated metal/insulator/metal nanodot arrays with transmission geometry
ترجمه فارسی عنوان
جذب رزونانس مغناطیسی در آرایه های نانولوله های جدا شده فلزی / عایق / فلز با هندسه انتقال
کلمات کلیدی
ساختار فلزی / مقره / فلز، جذب مغناطیسی، نفوذپذیری مغناطیسی، تشدید مغناطیسی، آرایه نانودوت
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
چکیده انگلیسی


• Investigated the magnetic absorption of MIM nanodot with transmission geometry.
• The magnetic absorption shows wide wavelength tunability than the electric absorption.
• Absorption is the dominant extinction process at the magnetic resonance.
• Magnetic absorption can be optimized with an adjustable wavelength and Q factor.

In this study, we have systematically investigated a magnetic resonance absorption and tunability of absorption wavelength in isolated metal-insulator-metal (MIM) nanodot arrays with transmission geometry. The elemental electromagnetic resonances and their hybridizations are studied using 3-dimensional finite-difference time-domain (FDTD) calculation and resonance properties including the resonance peak tunability, magnetic permeability and quality (Q) factor are characterized with respect to the coupling strength. We have found the existence of electric and magnetic resonance mode in the MIM (Au/MgF2/Au) structure and the magnetic resonance has larger wavelength tunability than the electric resonance. The absorption cross section calculation revealed that absorption is the dominant extinction process at the magnetic resonance only. Magnetic permeability (μ) calculations for the various MIM parameters showed the maximum value of the imaginary part of μ is 16.1 with Q factor of 9.2 when the size of nanodot is 200 nm and the inter-dot distance is 300 nm. The presented calculations can be used to tune the response of the magnetic resonance absorption with a variable resonance wavelength and Q factor by using the simple MIM structures with transmission geometry.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Current Applied Physics - Volume 15, Issue 7, July 2015, Pages 844–849
نویسندگان
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