Giant magnetoresistive effect and magnetic resonance in the reflection of electromagnetic waves from Fe-Cr nanostructures

2009 ◽  
Vol 54 (8) ◽  
pp. 1156-1161 ◽  
Author(s):  
V. V. Ustinov ◽  
A. B. Rinkevich ◽  
L. N. Romashev ◽  
E. A. Kuznetsov
Keyword(s):  
Magnetic Resonance ◽  
Electromagnetic Waves ◽  
Giant Magnetoresistive Effect ◽  
Magnetoresistive Effect

Magnetism and Magnetoresistance in NiFe/Bi/NiFe Films

2012 ◽  
Vol 190 ◽  
pp. 439-442 ◽  
Author(s):  
K. G. Patrin ◽  
V. Y. Yakovchuk ◽  
G.S. Patrin ◽  
S. A. Yarikov
Keyword(s):  
Magnetic Resonance ◽  
Squid Magnetometry ◽  
Interlayer Interaction ◽  
Giant Magnetoresistive Effect ◽  
Spacer Thickness ◽  
Magnetoresistive Effect

Interlayer interactions in FeNi/Bi/FeNi trilayers have been experimentally studied. Based on the data of SQUID magnetometry and magnetic resonance investigations, it is shown that the interlayer interaction is determined by a bismuth spacer thickness and temperature. The giant magnetoresistive effect in the trilayer films has been discovered.

Spin Resonance

2018 ◽  
Author(s):  
M. M. Glazov
Keyword(s):  
Magnetic Resonance ◽  
Nuclear Spin ◽  
Electromagnetic Waves ◽  
Zeeman Splitting ◽  
Resonant Absorption ◽  
Magnetic Interactions ◽  
Spin Effects ◽  
Crystalline Environment ◽  
Spin Resonance ◽  
Optically Detected

This chapter is devoted to one of key phenomena in the field of spin physics, namely, resonant absorption of electromagnetic waves under conditions where the Zeeman splitting of spin levels in magnetic field is equal to photon energy. This method is particularly important for identification of nuclear spin effects, because resonance spectra provide fingerprints of different involved spin species and make it possible to distinguish different nuclear isotopes. As discussed in this chapter the nuclear magnetic resonance provides also an access to local magnetic fields acting on nuclear spins. These fields are caused by the magnetic interactions between the nuclei and by the quadrupole splittings of nuclear spin states in anisotropic crystalline environment. Manifestations of spin resonance in optical responses of semiconductors–that is, optically detected magnetic resonance–are discussed.

Anisotropic giant magnetoresistive effect in the sandwich based FexNi1−x (x ≈ 0.5) and Cu

2018 ◽  
Vol 91 (12) ◽  
Author(s):  
Yurii O. Shkurdoda ◽  
Leonid V. Dekhtyaruk ◽  
Andrii G. Basov ◽  
Anatoliy P. Kharchenko ◽  
Anatoliy M. Chornous ◽  
...  
Keyword(s):  
Giant Magnetoresistive Effect ◽  
Magnetoresistive Effect

Graphene nanohybrids: excellent electromagnetic properties for the absorbing and shielding of electromagnetic waves

2018 ◽  
Vol 6 (17) ◽  
pp. 4586-4602 ◽  
Author(s):  
Maosheng Cao ◽  
Chen Han ◽  
Xixi Wang ◽  
Min Zhang ◽  
Yanlan Zhang ◽  
...  
Keyword(s):  
Magnetic Resonance ◽  
Charge Transport ◽  
Microwave Absorption ◽  
Electromagnetic Interference ◽  
Electromagnetic Waves ◽  
Electromagnetic Properties ◽  
Response Mechanism ◽  
Microwave Response ◽  
Electromagnetic Interference Shielding

The microwave absorption, electromagnetic interference shielding, and microwave response mechanism of graphene hybrids are highlighted, including relaxation, charge transport, magnetic resonance,etc.

Giant magnetoresistive effect in L10 ordered FePt films

2002 ◽  
Vol 239 (1-3) ◽  
pp. 217-219 ◽  
Author(s):  
S. Ishio ◽  
T. Yoshino ◽  
H. Saito ◽  
T. Suzuki ◽  
K. Ohuchi
Keyword(s):  
Giant Magnetoresistive Effect ◽  
Magnetoresistive Effect

scholarly journals Туннельная проводимость и туннельное магнитосопротивление пленок Fe-SiO: корреляция магнитотранспортных и магнитных свойств

2019 ◽  
Vol 61 (7) ◽  
pp. 1262
Author(s):  
Д.А. Балаев ◽  
А.Д. Балаев
Keyword(s):  
Activation Energy ◽  
Electrical Resistance ◽  
Low Temperatures ◽  
Magnetic Method ◽  
Tunnel Mechanism ◽  
Giant Magnetoresistive Effect ◽  
Temperature Dependences ◽  
Magnetoresistive Effect ◽  
Dielectric Region ◽  
Good Agreement

The paper presents the results of a study of the electrical properties of a system of nanogranular amorphous Fe-SiO films with a SiO concentration from 0 to 92 Vol.%. For samples with a low SiO content, metallic conductivity takes place. With an increase of the dielectric content, a concentration transition of conduction from the metallic regime to the tunnel regime at a dielectric concentration x  0.6 is observed. At the same concentration, a transition ferromagnet - superparamagnet occurs, which was previously investigated by the magnetic method. For compositions corresponding to the dielectric region, the temperature dependences of the electrical resistance (T) follow the law (T) ~ exp(2(С/kT)1/2), which is typical for the tunnel mechanism of conductivity. Estimation of the sizes of metal granules from the values of the tunneling-activation energy C showed a good agreement with the sizes obtained earlier from the analysis of magnetic properties. In the dielectric range of the compositions, a giant magnetoresistive effect was obtained, reaching 25% at low temperatures.

scholarly journals Caused by the giant magnetoresistive effect changes of microwave refractive index

2019 ◽  
Vol 487 (6) ◽  
pp. 622-625
Author(s):  
A. B. Rinkevich ◽  
D. V. Perov ◽  
E. A. Kuznetsov ◽  
M. A. Milyaev
Keyword(s):  
Refractive Index ◽  
Refraction Coefficient ◽  
Giant Magnetoresistive Effect ◽  
Magnetoresistive Effect

Studies of the interaction of electromagnetic microwaves with [Co88Fe12/Cu]n, nanostructures, in which the giant magnetoresistive effect (GMR) shows itself, have been carried out. It is established that the GMR effect contributes to changes in the microwave complex refraction coefficient, including the refractive index.

Microwave Refractive Index in CoFe/Cu Superlattices with a Giant Magnetoresistive Effect

2020 ◽  
Vol 121 (12) ◽  
pp. 1132-1136
Author(s):  
A. B. Rinkevich ◽  
E. A. Kuznetsov ◽  
D. V. Perov ◽  
M. A. Milyaev ◽  
L. I. Naumova
Keyword(s):  
Refractive Index ◽  
Giant Magnetoresistive Effect ◽  
Magnetoresistive Effect

scholarly journals Гигантский магниторезистивный эффект в отражении микроволн от сверхрешеток (CoFe)/Cu

2021 ◽  
Vol 91 (2) ◽  
pp. 308
Author(s):  
А.Б. Ринкевич ◽  
Е.А. Кузнецов ◽  
Д.В. Перов ◽  
М.А. Миляев
Keyword(s):  
Magnetic Field ◽  
Reflection Coefficient ◽  
Field Dependence ◽  
Giant Magnetoresistance ◽  
Magnetic Field Dependence ◽  
Wave Reflection ◽  
Frequency Range ◽  
Giant Magnetoresistive Effect ◽  
The Magnetic Field ◽  
Magnetoresistive Effect

Experimental study of microwave giant magnetoresistive effect in wave reflection has been carried out in frequency range from 26 to 38 GHz. The magnitude of the effect is obtained and its magnetic field dependence is defined. The experiments are carried out with (CoFe)/Cu superlattices, which have giant magnetoresistance. Calculations of the magnetic field dependence of microwave reflection coefficient are fulfilled. The measured values of reflection coefficient variations are found to be greater than the calculated ones. This difference is connected with approximation within which the superlattice is replaced by the uniform metallic plate in calculations. A frequency dependence of microwave giant magnetoresistive effect in reflection is also observed. This dependence is explained by the influence of the waveguide impedance where the sample is placed in measurements.

Sign in / Sign up

Export Citation Format

Share Document