scholarly journals Composite Electromagnetic Wave Absorber Made of Soft Magnetic Material Particle and Metal Particle Dispersed in Polystyrene Resin

10.5772/14731 ◽  
2011 ◽  
Author(s):  
Kenji Sakai ◽  
Norizumi Asano ◽  
Yoichi Wada ◽  
Yang Guan ◽  
Yuuki Sato ◽  
...  
Keyword(s):  
Magnetic Material ◽  
Electromagnetic Wave ◽  
Metal Particle ◽  
Soft Magnetic Material ◽  
Soft Magnetic ◽  
Material Particle ◽  
Polystyrene Resin

Composite electromagnetic wave absorber made of soft magnetic material and polystyrene resin and control of permeability and permittivity

2010 ◽  
Vol 30 (2) ◽  
pp. 347-353 ◽  
Author(s):  
Kenji Sakai ◽  
Norizumi Asano ◽  
Yoichi Wada ◽  
Shinzo Yoshikado
Keyword(s):  
Magnetic Material ◽  
Electromagnetic Wave ◽  
Soft Magnetic Material ◽  
Soft Magnetic ◽  
Polystyrene Resin ◽  
And Control

Design of Composite Electromagnetic Wave Absorber Made of Soft Magnetic Materials Dispersed and Isolated in Polystyrene Resin

2008 ◽  
Vol 388 ◽  
pp. 257-260 ◽  
Author(s):  
Kenji Sakai ◽  
Yoichi Wada ◽  
Shinzo Yoshikado
Keyword(s):  
Magnetic Material ◽  
Electromagnetic Wave ◽  
Magnetic Materials ◽  
Soft Magnetic Materials ◽  
Soft Magnetic Material ◽  
Complex Permeability ◽  
Frequency Range ◽  
Soft Magnetic ◽  
Mixture Ratio ◽  
Polystyrene Resin

Composite electromagnetic wave absorbers made of a soft magnetic material (permalloy or sendust) and polystyrene resin were investigated [1]. The volume mixture ratio of magnetic material was varied in the range from 18 vol% to 75 vol%. The composites with the low volume mixture ratio of soft magnetic material absorbed more than 99 % of electromagnetic wave power in the frequency range from 1 GHz to 10 GHz. The values of the real part r’ of the relative complex permeability r * for both magnetic materials were less than unity at frequencies above approximately 6 GHz as the volume mixture ratio of magnetic material increased. This result suggests the possible realization of an electromagnetic wave absorber that can operate above 10 GHz.

Design of Composite Electromagnetic Wave Absorber Made of Soft Magnetic Materials Dispersed and Isolated in Polystyrene Resin

PIERS Online ◽  
2008 ◽  
Vol 4 (2) ◽  
pp. 211-216 ◽  
Author(s):  
Kenji Sakai ◽  
Yoichi Wada ◽  
Shinzo Yoshikado
Keyword(s):  
Electromagnetic Wave ◽  
Magnetic Materials ◽  
Soft Magnetic Materials ◽  
Soft Magnetic ◽  
Polystyrene Resin

Iron-Based P/M Soft Magnetic Material for Electric Devices Operating at High Frequencies

2007 ◽  
pp. 1333-1336
Author(s):  
Tomoyuki Ishimine ◽  
Toru Maeda ◽  
Haruhisa Toyoda ◽  
Kouji Mimura ◽  
Takao Nishioka ◽  
...  
Keyword(s):  
Magnetic Material ◽  
Soft Magnetic Material ◽  
Soft Magnetic ◽  
High Frequencies ◽  
Iron Based

Synthesis of $\gamma^{\prime}$ -Fe4N Soft Magnetic Material by High-Pressure Nitriding Approach

2019 ◽  
Vol 55 (2) ◽  
pp. 1-4
Author(s):  
Yanfeng Jiang ◽  
Linxin Jiang
Keyword(s):  
Magnetic Material ◽  
High Pressure ◽  
Soft Magnetic Material ◽  
Soft Magnetic ◽  
Gamma Prime

Iron-Based P/M Soft Magnetic Material for Electric Devices Operating at High Frequencies

2007 ◽  
Vol 534-536 ◽  
pp. 1333-1336 ◽  
Author(s):  
Tomoyuki Ishimine ◽  
Toru Maeda ◽  
Haruhisa Toyoda ◽  
Kouji Mimura ◽  
Takao Nishioka ◽  
...  
Keyword(s):  
Magnetic Material ◽  
Soft Magnetic Material ◽  
Soft Magnetic ◽  
High Frequencies ◽  
Iron Based

Flexible Magnetics: Magnetic Lithography and Fabrication of Magnetic Masks on Thin Plastic Substrates

2003 ◽  
Vol 769 ◽  
Author(s):  
Z. Z. Bandić ◽  
H. Xu ◽  
J.E.E. Baglin ◽  
T. R. Albrecht
Keyword(s):  
Magnetic Material ◽  
Flexible Electronics ◽  
Flexible Substrate ◽  
Magnetic Transition ◽  
Soft Magnetic Material ◽  
Plastic Substrate ◽  
Magnetic Media ◽  
Soft Magnetic ◽  
Plastic Substrates ◽  
Pet Films

AbstractFlexible magnetic lithography is a process qualitatively analogous to contact optical lithography which transfers information from a patterned magnetic mask (analog of optical photomask) to magnetic media (analog of photoresist), and is interesting for applications in instantaneous parallel magnetic recording. The magnetic mask consists of patterned soft magnetic material (FeNiCo, FeCo) on a flexible plastic substrate, typically Polyethylene Teraphtalate (PET). When uniformly magnetized media is brought into intimate contact with the magnetic mask, an externally applied magnetic field selectively changes the magnetic orientation in the areas not covered with the soft magnetic material. Flexible substrate of the magnetic mask o.ers superior compliance to magnetic media which is likely to have imperfect flatness and surface particulate contamination.Although magnetic in physical nature, flexible magnetics draws interesting parallels to flexible electronics, especially in challenges of fabrication of sub-micron patterns on thin flexible plastic substrates. We fabricated samples of sub-micron patterned FeCo and FeNiCo magnetic masks on PET substrates by using combined lamination/release process of PET films. Rigid substrates, typically silicon or quartz were initially laminated with PET films and processed using standard fabrication procedures. After completing magnetic mask device fabrication, PET films were released from the rigid substrates.We successfully transferred patterns from magnetic masks to hard disk CrPtCo-based magnetic media. The details of the method, including physics of the magnetic lithography pattern transfer, fabrication of the magnetic mask on flexible PET substrates, lamination and release of PET films, and magnetic force microscopy (MFM) images of the magnetic transition patterns are reported.

Investigations of Bloch wall mobility in crystalline and amorphous soft magnetic material

1992 ◽  
Vol 112 (1-3) ◽  
pp. 125-128 ◽  
Author(s):  
P. Schönhuber ◽  
H. Pfützner ◽  
Y. Simpson ◽  
G.S. Radley
Keyword(s):  
Magnetic Material ◽  
Soft Magnetic Material ◽  
Bloch Wall ◽  
Soft Magnetic ◽  
Wall Mobility
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