Artificial anisotropic chiral structures with dielectric and magnetic properties at oblique incidence of electromagnetic waves

2002 ◽  
Author(s):  
I.V. Semchenko ◽  
S.A. Khakhomov
Keyword(s):  
Magnetic Properties ◽  
Electromagnetic Waves ◽  
Oblique Incidence ◽  
Chiral Structures

Effect of Lanthanum Substituted CoFe2-xLaxO4 on Change of Structure Parameter and Phase Formation

2020 ◽  
Vol 855 ◽  
pp. 70-77
Author(s):  
Akmal Johan ◽  
Ari Adi Wisnu ◽  
Fitri Suryani Arsyad ◽  
Dedi Setiabudidaya
Keyword(s):  
Magnetic Material ◽  
Magnetic Properties ◽  
Electromagnetic Waves ◽  
Earth Metal ◽  
Particle Morphology ◽  
Metal Elements ◽  
Elementary Analysis ◽  
Resonance Domain ◽  
Orbital Configuration ◽  
Absorbing Material

In this research, CoFe2-xLaxO4-based smart magnetic material has been developed which will be applied as a microwave absorbing material. This smart magnetic material is an artificial advanced material which has properties such as electromagnetic waves so that it is able to respond to the presence of microwaves through the mechanism of spin electron resonance and wall resonance domain. This smart magnetic material consists of a combination of rare earth metal elements (spin magnetic in the f orbital configuration) and transition metal elements (spin magnetic in the d orbital configuration) with a semi-hard magnetic structure. This semi-hard is a characteristic of magnetic properties which is between hard magnetic and soft magnetic properties. This characteristic of the semi-hard magnetic properties is needed so that this material has the ability to absorb microwaves. Substitution of lanthanum into cobalt ferrite CoFe2-xLaxO4 for La3+ (x = 0 - 0.8) has been synthesized using the solid reaction method through mechanical deformation techniques. The refinement result of X-ray diffraction shows that the sample contains 2 phases with increasing of x compositions. Particle morphology and elementary analysis were observed respectively by using a scanning electron microscope (SEM) and energy dispersive spectroscopy (EDS). It was concluded that the effect of La substitution on CoFe2-xLaxO4 resulted in changes in the crystal structure parameters and phase transformation as a function of composition.

INTERACTION OF INFRARED ELECTROMAGNETIC WAVES IN RESONANT LAYERED STRUCTURES WITH n-GaAs SEMICONDUCTOR FILM

2009 ◽  
Vol 18 (01) ◽  
pp. 73-83
Author(s):  
V. GRIMALSKY ◽  
S. KOSHEVAYA ◽  
J. ESCOBEDO-A
Keyword(s):  
Electric Field ◽  
Total Internal Reflection ◽  
Electromagnetic Waves ◽  
Oblique Incidence ◽  
Modulation Instability ◽  
Semiconductor Film ◽  
Gaas Film ◽  
Short Pulses ◽  
Bias Electric Field ◽  
Resonant Transmission

Interaction of infrared electromagnetic (EM) waves in a layered structure with n- GaAs film is investigated theoretically. An oblique incidence of EM wave is considered, when the total internal reflection and resonant transmission occur. It is demonstrated that this structure modulates effectively the infrared EM wave. The modulation mechanism is due to the transfer of electrons from the upper valley to the higher ones in a strong bias electric field. An interaction of strong incident infrared EM pulses with this structure is also considered in the case of the absence of a bias electric field. Both the nonlinear switching of short pulses and the modulation instability of long strong pulses take place.

Magnetic Properties of Sm-Co Thin Films Prepared by Oblique Incidence

1982 ◽  
Vol 21 (Part 2, No. 10) ◽  
pp. L619-L620 ◽  
Author(s):  
Takao Tanaka ◽  
Makoto Yoshida ◽  
Seiichi Takahashi ◽  
Akira Tasaki
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Oblique Incidence

Magnetic properties of iron thin films evaporated at oblique incidence

1984 ◽  
Vol 46 (1-2) ◽  
pp. 123-130 ◽  
Author(s):  
K. Ozawa ◽  
K. Yazawa ◽  
M. Sato ◽  
M. Takahashi
Keyword(s):  
Thin Films ◽  
Magnetic Properties ◽  
Oblique Incidence
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