Microwave Metamaterials Containing Magnetically Soft Microwires

2011 ◽  
Vol 1312 ◽  
Author(s):  
L. V. Panina ◽  
M. Ipatov ◽  
V. Zhukova ◽  
J. Estevez ◽  
A. Zhukov
Keyword(s):  
Effective Permittivity ◽  
Microwave Frequency ◽  
Microwave Response ◽  
Giant Magnetoimpedance ◽  
Metallic Wire ◽  
Giant Magnetoimpedance Effect ◽  
Amorphous Wires ◽  
New Type ◽  
Wire Media ◽  
External Stimuli

ABSTRACTThis paper discusses a new type of wire media based on amorphous ferromagnetic microwires. The combination of two effects, namely, a strong dispersion of the effective permittivity in metallic wire composites (resonance or plasmonic type) and giant magnetoimpedance effect in wires will result in unusual property that an effective dielectric response may strongly depend on the wire magnetization which can be changed with different external stimuli. We have demonstrated the effect of the external magnetic field on microwave response from composites containing CoFeSiBCr amorphous wires in free space at microwave frequency.

Microwave Metamaterials Containing Magnetically Soft Microwires

2010 ◽  
Vol 75 ◽  
pp. 224-229 ◽  
Author(s):  
Mihail Ipatov ◽  
V. Zhukova ◽  
Arcady P. Zhukov ◽  
Larissa V. Panina
Keyword(s):  
Magnetic Properties ◽  
Effective Permittivity ◽  
Microwave Frequency ◽  
Index Of Refraction ◽  
Electromagnetic Response ◽  
Transmission Spectra ◽  
Mechanical Stimuli ◽  
Metallic Wire ◽  
Negative Index Of Refraction ◽  
Wire Media

In this paper we discuss the development of metamaterials containing ferromagnetic microwires which makes it possible to tune the electromagnetic response in the microwave frequency band. Metallic wire media are known to demonstrate very strong dispersion of the effective permittivity at GHz frequencies. At certain conditions, the magnetic properties of constituent wires may strongly contribute to the system losses owing to the magnetoimpedance effect, resulting in unusual dependence of the permittivity on the external magnetic or mechanical stimuli. We also demonstrate the possibility to design the wire media with a negative index of refraction utilizing natural magnetic properties of wires. The results involve theoretical modeling and measurements of the reflection/transmission spectra by free-space methods. A reasonable agreement between theoretical and experimental data is demonstrated.

Influences of Extra Magnets on Giant Magnetoimpedance Effect in Amorphous Wires

2009 ◽  
Vol 45 (9) ◽  
pp. 3223-3227 ◽  
Author(s):  
Hao Pang ◽  
Gen Li ◽  
Zhen Li ◽  
Zan-Ji Wang
Keyword(s):  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Amorphous Wires

Giant magnetoimpedance effect in a positive magnetostrictive glass-coated amorphous microwire

2002 ◽  
Vol 65 (6) ◽  
Author(s):  
K. Mandal ◽  
S. Pan Mandal ◽  
M. Vázquez ◽  
S. Puerta ◽  
A. Hernando
Keyword(s):  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Amorphous Microwire

Focusing of waves at low microwave frequencies using metallic wire media

2005 ◽  
Vol 48 (1) ◽  
pp. 133-138 ◽  
Author(s):  
S. Sudhakaran ◽  
Y. Hao ◽  
C. G. Parini
Keyword(s):  
Metallic Wire ◽  
Microwave Frequencies ◽  
Wire Media

scholarly journals Analysis of current-density distribution and giant magnetoimpedance effect in composite wires

2006 ◽  
Vol 55 (4) ◽  
pp. 2014
Author(s):  
Liu Long-Ping ◽  
Zhao Zhen-Jie ◽  
Huang Can-Xing ◽  
Wu Zhi-Ming ◽  
Yang Xie-Long
Keyword(s):  
Density Distribution ◽  
Current Density ◽  
Current Density Distribution ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Composite Wires

Diameter dependence of the giant magnetoimpedance in hard-drawn CoFeSiB amorphous wires

2002 ◽  
Vol 91 (10) ◽  
pp. 7418 ◽  
Author(s):  
Jifan Hu ◽  
Hongwei Qin ◽  
Fuzhong Zhang ◽  
R. K. Zheng
Keyword(s):  
Giant Magnetoimpedance ◽  
Amorphous Wires
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