| 학회 |
한국재료학회 |
| 학술대회 |
2014년 가을 (11/27 ~ 11/28, 대전컨벤션센터) |
| 권호 |
20권 2호 |
| 발표분야 |
B. 나노 재료(Nanomaterials) |
| 제목 |
Magnetic permeability and magnetic-resonance transmission of metal/insulator/metal based nanodoat arrays |
| 초록 |
In recent years, a group of magnetic resonance structures has received much attentions due to their interesting magnetic properties and potential applications to high frequency devices. Among the various artificial structures, metal-insulator-metal (MIM) structure have been extensively studied since it can lead to polarization and angle independent resonant absorption. In optical region, the control of magnetic permeability and electric permittivity in MIM structure increasingly has great importance for the practical applications of this structure. The creation of magnetic resonance is one of the key issues in the structure since magnetic permeability of most natural materials is unity in optical region. In this work, we systematically studied the effects of geometric parameters, and magnetic permeability on the electromagnetic responses of Au/MgF2/Au based MIM nanodisc by using well-known FDTD simulation software (CST). It is observed that the antiparallel currents induce magnetic moment, which counteracts with the external magnetic field and leads to a negative response in the μ. And dimension of MIM nanodisc applied along with the polarization direction have dominant effect on magnetic resonance. It is easy to learn that we can tune the magnetic resonance from near IR to IR region by decreasing the diameter of nanodisc from 450 nm to 200 nm. |
| 저자 |
Thanh Son Vo1, Jong-Ryul Jeong2
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| 소속 |
1Department of Materials Science and Engineering and Graduate School of Energy Science and Technology, 2Chungnam National Univ. |
| 키워드 |
nanodot; magnetic properties
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| E-Mail |
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