Dipolar field dependent tunable negative refraction behavior of cobalt and iron kagome shaped magnetic nanostructures

2021 ◽  
Vol 610 ◽  
pp. 412947
Author(s):  
Madhumathi Rajaram ◽  
Amuda Rajamani
Keyword(s):  
Negative Refraction ◽  
Magnetic Nanostructures ◽  
Dipolar Field ◽  
Field Dependent

MAGNETIC-CONTROLLED NEGATIVE REFRACTION IN FERROMAGNETIC NANOWIRES COMPOSITE

2009 ◽  
Vol 23 (17) ◽  
pp. 2141-2147
Author(s):  
HAI-XIA DA ◽  
J. C. WU ◽  
Z. Y. LI
Keyword(s):  
Magnetic Field ◽  
Negative Refraction ◽  
Geometrical Structure ◽  
Experimental Studies ◽  
Negative Permeability ◽  
Alternative Route ◽  
Magnetic Nanowires ◽  
Field Dependent ◽  
Simulation Results ◽  
Materials Used

Microfabrication of tunable negative refraction materials used in many experimental studies currently relies on the change of the component or the geometrical structure. We theoretically demonstrate magnetically controlled negative permeability in the composite composed of magnetic nanowires (Ni). A magnetic-field-dependent permeability was clearly observed by changing the applied magnetic field, which directly proves the tunable feature of the composite with a small external magnetic field. The simulation results suggest that magnetic nanowires composite can be an alternative route to realizing tunable negative refraction.

MAGNETIC FIELD DEPENDENT RESTSTRAHLEN SPECTRA IN PARAMAGNETIC CeF3

1981 ◽  
Vol 42 (C6) ◽  
pp. C6-499-C6-501 ◽  
Author(s):  
H. Gerlinger ◽  
G. Schaack
Keyword(s):  
Magnetic Field ◽  
Field Dependent

MAGNETIC FIELD DEPENDENT RELAXATION TIME IN p-InSb AT LOW TEMPERATURES

1981 ◽  
Vol 42 (C5) ◽  
pp. C5-689-C5-693
Author(s):  
J. D.N. Cheeke ◽  
G. Madore ◽  
A. Hikata
Keyword(s):  
Magnetic Field ◽  
Relaxation Time ◽  
Low Temperatures ◽  
Field Dependent

Quantum fluctuations in magnetic nanostructures

2018 ◽  
Vol 189 (01) ◽  
pp. 85-94
Author(s):  
Yuri N. Barabanenkov ◽  
Sergej A. Nikitov ◽  
Mikhail Yu. Barabanenkov
Keyword(s):  
Magnetic Nanostructures ◽  
Quantum Fluctuations

Magnetization dynamics of irradiation-fabricated perpendicularly magnetized dots inside a softer magnetic matrix

2003 ◽  
Vol 777 ◽  
Author(s):  
T. Devolder ◽  
M. Belmeguenai ◽  
C. Chappert ◽  
H. Bernas ◽  
Y. Suzuki
Keyword(s):  
Domain Wall ◽  
Magnetic Anisotropy ◽  
Magnetization Reversal ◽  
Ion Irradiation ◽  
Magnetic Nanostructures ◽  
Magnetic Storage ◽  
Exchange Field ◽  
Static Magnetization ◽  
Specific Domain ◽  
Helium Ion

AbstractGlobal Helium ion irradiation can tune the magnetic properties of thin films, notably their magneto-crystalline anisotropy. Helium ion irradiation through nanofabricated masks can been used to produce sub-micron planar magnetic nanostructures of various types. Among these, perpendicularly magnetized dots in a matrix of weaker magnetic anisotropy are of special interest because their quasi-static magnetization reversal is nucleation-free and proceeds by a very specific domain wall injection from the magnetically “soft” matrix, which acts as a domain wall reservoir for the “hard” dot. This guarantees a remarkably weak coercivity dispersion. This new type of irradiation-fabricated magnetic device can also be designed to achieve high magnetic switching speeds, typically below 100 ps at a moderate applied field cost. The speed is obtained through the use of a very high effective magnetic field, and high resulting precession frequencies. During magnetization reversal, the effective field incorporates a significant exchange field, storing energy in the form of a domain wall surrounding a high magnetic anisotropy nanostructure's region of interest. The exchange field accelerates the reversal and lowers the cost in reversal field. Promising applications to magnetic storage are anticipated.

BERPIKIR REFLEKTIF SISWA BERDASARKAN GAYA KOGNITIF FIELD INDEPENDENT DAN FIELD DEPENDENT

EDUPEDIA ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 117
Author(s):  
Sayyidah Umma Rahmawati ◽  
Senja Putri Merona
Keyword(s):  
Field Independent ◽  
Field Dependent ◽  
Figure Test

Penelitian ini bertujuan untuk mendeskripsikan berpikir reflektif siswa ditinjau dari gaya kognitif field independent dan field dependent. Penelitian ini merupakan penelitian deskriptif dengan pendekatan kualitatif. Adapun istrumen yang digunakan adalah Group Embedded Figure Test (GEFT), tes soal berpikir reflektif dan wawancara. Sedangkan analisis data yang digunakan adalah analisis data Miles dan Huberman yang tediri dari reduksi data, penyajian data dan kesimpulan atau verifikasi.Hasil penelitian ini menunjukkan bahwa pada indikator berpikir reflektif reacting terdapat kesamaan berpikir reflektif antara siswa field independent dan field dependent. Pada indikator berpikir reflektif comparing terdapat perbedaan dalam hal menghubungkan pengetahuan yang diberikan dengan pengetahuan yang dimiliki. Pada indikator berpikir reflektif contemplating terdapat perbedaan pada kemampuan mendeteksi kesalahan. Temuan lain dalam penelitian ini adalah bahwa siswa field independent menjelaskan jawabannya dengan detail dan rinci, cenderung menggunakan cara menghafal dan memiliki kepercayaan diri yang tinggi. Sedangkan siswa field dependent menjelaskan jawabannya secara umum, memiliki analisis yang baik dan menyukai cara yang telah ditetapkan

Discussion on Negative Refraction and Perfect Lens

PIERS Online ◽  
2005 ◽  
Vol 1 (1) ◽  
pp. 34-36 ◽  
Author(s):  
Long Gen Zheng ◽  
Wenxun Zhang
Keyword(s):  
Negative Refraction ◽  
Perfect Lens
Sign in / Sign up

Export Citation Format

Share Document