Pulse radiolysis in an applied magnetic field. The time dependence of the magnetic field enhancement of the fluorescence from solutions of fluorene in squalane

1977 ◽  
Vol 81 (9) ◽  
pp. 815-819 ◽  
Author(s):  
F. P. Sargent ◽  
B. Brocklehurst ◽  
R. S. Dixon ◽  
E. M. Gardy ◽  
V. J. Lopata ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Time Dependence ◽  
Applied Magnetic Field ◽  
Pulse Radiolysis ◽  
Field Enhancement ◽  
Magnetic Field Enhancement ◽  
The Magnetic Field

Magnetic Field Enhancement with Soft Magnetic Flux Guides

2008 ◽  
Vol 587-588 ◽  
pp. 313-317
Author(s):  
D.C. Leitão ◽  
I.G. Trindade ◽  
R. Fermento ◽  
João P. Araújo ◽  
S. Cardoso ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Flux ◽  
Spin Valve ◽  
Field Enhancement ◽  
High Permeability ◽  
Soft Magnetic ◽  
Field Amplification ◽  
Close Proximity ◽  
Magnetic Field Enhancement ◽  
The Magnetic Field

In this work, a study of the sensitivity enhancement of spin valve sensors, when located in close proximity to magnetic flux guides, is presented. The magnetoresistance (MR) of spin-valve sensors, lithographically patterned into stripes with lateral dimensions, (length) l = 500 µm, (width) wsensor = 1, 2, 6 µm and placed near one/two Co93.5Zr2.8Nb3.7 (CZN) magnetic flux guide, is characterized at room temperature. CZN has a high permeability that together with a defined microstructured shape, is able to concentrate the magnetic flux in a small area, leading to an increase in sensor's sensitivity. The magnetic field amplification is estimated by comparison of sensor sensitivity with/without magnetic flux guides, in the linear operation range, and studied as a function of different parameters. Besides an enhancement in sensitivity, sensors also exhibit an important increase in the hard axis coercivity and a shift from MR(H=0) = 0.5, both attributed to the magnetic flux guides. Amplification factors of the order of 20 are observed..

scholarly journals Magnetic field concentration assisted by epsilon-near-zero media

2017 ◽  
Vol 375 (2090) ◽  
pp. 20160059 ◽  
Author(s):  
Iñigo Liberal ◽  
Yue Li ◽  
Nader Engheta
Keyword(s):  
Magnetic Field ◽  
Enhancement Factor ◽  
Light Emission ◽  
Field Enhancement ◽  
Intrinsic Property ◽  
Inhomogeneous Magnetic Field ◽  
Additional Information ◽  
Magnetic Field Enhancement ◽  
The Magnetic Field ◽  
Epsilon Near Zero

Strengthening the magnetic response of matter at optical frequencies is of fundamental interest, as it provides additional information in spectroscopy, as well as alternative mechanisms to manipulate light at the nanoscale. Here, we demonstrate theoretically that epsilon-near-zero (ENZ) media can enhance the magnetic field concentration capabilities of dielectric resonators. We demonstrate that the magnetic field enhancement factor is unbounded in theory, and it diverges as the size of the ENZ host increases. In practice, the maximal enhancement factor is limited by dissipation losses in the host, and it is found via numerical simulations that ENZ hosts with moderate losses can enhance the performance of a circular dielectric rod resonator by around one order of magnitude. The physical mechanism behind this process is the strongly inhomogeneous magnetic field distributions induced by ENZ media in neighbouring dielectrics. We show that this is an intrinsic property of ENZ media, and that the occurrence of resonant enhancement is independent of the shape of the host. These results might find applications in spectroscopy, in sensing, in light emission and, in general, in investigating light–matter interactions beyond electric dipole transitions. This article is part of the themed issue ‘New horizons for nanophotonics’.

Abrikosov vortex corrections to effective magnetic field enhancement in epitaxial graphene

2021 ◽  
Vol 104 (8) ◽  
Author(s):  
Luke R. St. Marie ◽  
Chieh-I Liu ◽  
I-Fan Hu ◽  
Heather M. Hill ◽  
Dipanjan Saha ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Field Enhancement ◽  
Epitaxial Graphene ◽  
Effective Magnetic Field ◽  
Abrikosov Vortex ◽  
Magnetic Field Enhancement

Magnetic field enhancement of the Hall effect anomalies in quantum critical point CeCu5.9Au0.1

2008 ◽  
Vol 403 (5-9) ◽  
pp. 1268-1269 ◽  
Author(s):  
D.N. Sluchanko ◽  
V.V. Glushkov ◽  
S.V. Demishev ◽  
O.D. Chistyakov ◽  
N.E. Sluchanko
Keyword(s):  
Magnetic Field ◽  
Hall Effect ◽  
Critical Point ◽  
Quantum Critical Point ◽  
Field Enhancement ◽  
Quantum Critical ◽  
Magnetic Field Enhancement
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