scholarly journals Магнитный импеданс пленочных наноструктур для оценки полей рассеяния микрочастиц магнитных композитов

2022 ◽  
Vol 92 (2) ◽  
pp. 321
Author(s):  
Г.Ю. Мельников ◽  
В.Н. Лепаловский ◽  
Г.В. Курляндская
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Magnetic Composite ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Magnetic Microparticles ◽  
Stray Magnetic Field ◽  
Weight Concentration ◽  
Maximum Value ◽  
Film Element

Longitudinal giant magnetoimpedance effect of [Fe21Ni79/Cu]5/Cu/[Fe21Ni79/Cu]5 film element was investigated depends on stray magnetic field of epoxy magnetic composite with 30 % weight concentration of iron oxide magnetic microparticles. Configuration of an experiment was a model of thrombus detection in a blood vessel. Stray magnetic field was varied by movement of a magnetic composite above the element perpendicular to the long side. Composite was either magnetized or not to the state of remanence. As the magnetic composite approaches the GMI element, MI ratio curves are smoothed and shifted along the field axis and maximum value of the MI ratio decreases. Magnetic properties of magnetic composite and film element were investigated as well.

GIANT MAGNETOIMPEDANCE EFFECT IN MULTILAYERED STRUCTURE (FM/SiO2)3/Ag/(SiO2/FM)3 FILMS

2005 ◽  
Vol 19 (30) ◽  
pp. 4475-4482
Author(s):  
WEI-PING CHEN ◽  
SHU-QIN XIAO ◽  
WEN-JING WANG ◽  
HUI-MIN YUAN ◽  
YI-HUA LIU
Keyword(s):  
Magnetic Field ◽  
Deposition Process ◽  
Transverse Magnetic ◽  
Multilayered Structure ◽  
Giant Magnetoimpedance ◽  
Multilayered Films ◽  
Giant Magnetoimpedance Effect ◽  
Radio Frequency Sputtering ◽  
Maximum Value ◽  
Different Temperatures

Giant magnetoimpedance (GMI) and giant magnetoreactance (GMX) effects in multilayered structure ( FM/SiO 2)3/ Ag /( SiO 2/ FM )3( FM ≡ Fe 71.5 Cu 1 Cr 2.5 V 4 Si 12 B 9) films have been studied. The multilayered films were deposited by radio frequency sputtering under a constant magnetic field of 900 Oe applied in the plane of the sample perpendicular to its long side (transverse direction) and then annealed under different temperatures. The maximum GMI ratio of 122% was obtained at the frequency of 4.6 MHz. The maximum value of GMX ratio and the sensitivity of GMX ratio, 2578% and 129%/Oe, were obtained in a longitudinal field case at the frequency of 1 MHz, respectively. These superior properties are related to the special structure of the multilayered films and the transverse magnetic field used in the deposition process.

scholarly journals Influence of Various Heat Treatments on Giant Magnetoimpedance Effect in Nanocrystalline FeSiBNbCu Ribbons

1999 ◽  
Vol 32 (1-4) ◽  
pp. 269-279 ◽  
Author(s):  
G. V. Kurlyandskaya ◽  
M. Vázquez ◽  
E. H.C.P. Sinnecker ◽  
A. P. Zhukov ◽  
J. P. Sinnecker ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Zero Field ◽  
Fixed Frequency ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
X Ray ◽  
Induced Magnetic Anisotropy ◽  
Magnetostriction Constant

In this paper we present studies on the frequency dependence of the magneto-impedance in the range of 0.1–2 MHz for Fe73.5Si13.5B9Nb3Cu1 and Fe73.5Si16.5B6Nb3Cu1 nanocrystalline ribbons, which differ in the sign of the magnetostriction constant. As cast samples were annealed in Ar atmosphere at 560℃, with and without an DC and AC magnetic field. At a fixed frequency, an improvement in the field annealed 13.5% Si samples, when compared with the zero field annealed ones, can be observed. On the 16.5% Si field annealed samples only a reduction of magneto-impedance ratio could be observed, when compared to the non-field annealed ones. Analysis of the magnetic properties and X-ray data shows that the observed changes in magneto-impedance effect are consequence of the induced magnetic anisotropy.

scholarly journals Magnetic Properties and Magnetoimpedance of Electroplated Wires

2012 ◽  
Vol 190 ◽  
pp. 581-584 ◽  
Author(s):  
G.V. Kurlyandskaya ◽  
P. Jantaratana ◽  
N.G. Bebenin ◽  
V.O. Vas’kovskiy
Keyword(s):  
Magnetic Field ◽  
Magnetic Properties ◽  
Automatic Control ◽  
Permanent Magnet ◽  
Dynamic Properties ◽  
Uniform Field ◽  
Giant Magnetoimpedance ◽  
Positioning Systems ◽  
Driving Current ◽  
Concentration Measurements

Magnetic properties and giant magnetoimpedance (GMI) of CuBe/Fe20Co6Ni74 electroplated wires was studied for frequency of 1 MHz and the amplitude of the driving current of 20 mA with focus on the development of magnetic field detectors of particular types. The possibility of quantitative ferrofluid concentration measurements was demonstrated. GMI of electroplated wire can be useful for the study of the dynamic properties of the ferrofluid. GMI of the electroplated wires in the non-uniform field created by the permanent magnet was studied in the configuration adapted for automatic control lines, machinery control, and positioning systems.

Optimization of Magnetic Properties and Giant Magnetoimpedance Effect in Nanocrystalline Microwires

2014 ◽  
Vol 28 (3) ◽  
pp. 813-822 ◽  
Author(s):  
A. Zhukov ◽  
A. Talaat ◽  
M. Ipatov ◽  
J. J. del Val ◽  
L. Gonzalez-Legarreta ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect

The Bias-Controlled Magnetoimpedance Effect in a MIS Structure

2015 ◽  
Vol 233-234 ◽  
pp. 451-455
Author(s):  
Dmitry A. Smolyakov ◽  
Anton S. Tarasov ◽  
Arthur O. Gustaitsev ◽  
Nikita V. Volkov
Keyword(s):  
Magnetic Field ◽  
Applied Magnetic Field ◽  
Mis Structure ◽  
Giant Magnetoimpedance ◽  
Metal Insulator ◽  
Giant Magnetoimpedance Effect ◽  
The Real ◽  
Mis Diode ◽  
The Magnetic Field ◽  
Pronounced Peak

We report the giant magnetoimpedance effect in a ferromagnetic metal/insulator/semiconductor (MIS) diode with the Schottky barrier based on the Fe/SiO2/n-Si structure. It was established that the applied magnetic field strongly influences the impedance of the structure in the temperature range 10—30 K. In this range, there is the pronounced peak in the temperature dependence of the real part of the impedance at frequencies from 10 Hz to 1 MHz. The effect of the magnetic field manifests itself as a shift of the peak of the real part of the impedance. Under the action of a bias voltage of 5 V, the peak of the real part of the impedance similarly shifts toward lower temperatures with and without applied magnetic field.

scholarly journals Optimization of magnetic properties and GMI effect of Thin Co-rich Microwires for GMI Microsensors

Sensors ◽  
2020 ◽  
Vol 20 (6) ◽  
pp. 1558 ◽  
Author(s):  
Lorena Gonzalez-Legarreta ◽  
Paula Corte-Leon ◽  
Valentina Zhukova ◽  
Mihail Ipatov ◽  
Juan Maria Blanco ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Magnetic Anisotropy ◽  
Hysteresis Loops ◽  
Transverse Magnetic ◽  
Wide Frequency Range ◽  
Soft Magnetic ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Annealing Temperatures ◽  
High Annealing

Magnetic microwires can present excellent soft magnetic properties and a giant magnetoimpedance effect. In this paper, we present our last results on the effect of postprocessing allowing optimization of the magnetoimpedance effect in Co-rich microwires suitable for magnetic microsensor applications. Giant magnetoimpedance effect improvement was achieved either by annealing or stress-annealing. Annealed Co-rich presents rectangular hysteresis loops. However, an improvement in magnetoimpedance ratio is observed at fairly high annealing temperatures over a wide frequency range. Application of stress during annealing at moderate values of annealing temperatures and stress allows for a remarkable decrease in coercivity and increase in squareness ratio and further giant magnetoimpedance effect improvement. Stress-annealing, carried out at sufficiently high temperatures and/or stress allowed induction of transverse magnetic anisotropy, as well as magnetoimpedance effect improvement. Enhanced magnetoimpedance ratio values for annealed and stress-annealed samples and frequency dependence of the magnetoimpedance are discussed in terms of the radial distribution of the magnetic anisotropy. Accordingly, we demonstrated that the giant magnetoimpedance effect of Co-rich microwires can be tailored by controlling the magnetic anisotropy of Co-rich microwires, using appropriate thermal treatment.

Magnetic field meter based on giant magnetoimpedance effect

2008 ◽  
Vol 141 (1) ◽  
pp. 68-75 ◽  
Author(s):  
M. Kuźmiński ◽  
K. Nesteruk ◽  
H.K. Lachowicz
Keyword(s):  
Magnetic Field ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect

Surface magnetic properties and giant magnetoimpedance effect in Co-based amorphous ribbons

2017 ◽  
Vol 86 ◽  
pp. 15-19 ◽  
Author(s):  
A. Chizhik ◽  
V. Vega ◽  
Abd El-Moez A. Mohamed ◽  
V.M. Prida ◽  
T. Sánchez ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Giant Magnetoimpedance ◽  
Giant Magnetoimpedance Effect ◽  
Amorphous Ribbons
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