Influence of Current Annealing on the Temperature Dependences of Magnetoimpedance in Amorphous Microwires

The glass-covered Co-rich amorphous wires was annealed by an applied stress during the current annealing process. The influence of stress and dc current annealing on the giant magneto-impedance (GMI) effect were investigated by the magneto-impedance. Our experiments showed that the magentic anisotropy is reduced by the annealing treatments, furthermore, the maximum GMI value is increased to 105 %.The GMI value is enhanced by increasing the outer domain volume and inducing a transverse anisotropy due to the changing of inner stress.

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Magnetostriction of glass-coated Co-rich amorphous microwires and its dependence on current annealing

Journal of Magnetism and Magnetic Materials ◽

10.1016/s0304-8853(02)00757-6 ◽

2003 ◽

Vol 254-255 ◽

pp. 94-96 ◽

Cited By ~ 14

Author(s):

V Zhukova ◽

J.M Blanco ◽

A Zhukov ◽

J Gonzalez ◽

A Torcunov ◽

...

Keyword(s):

Current Annealing ◽

Amorphous Microwires

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Effect of current annealing on magnetic anisotropy in glass-coated amorphous microwires with positive magnetostriction

2017 IEEE International Magnetics Conference (INTERMAG) ◽

10.1109/intmag.2017.8007790 ◽

2017 ◽

Cited By ~ 1

Author(s):

A. Adam ◽

M.M. Salem ◽

M.G. Nematov ◽

A. Uddin ◽

L.V. Panina

Keyword(s):

Magnetic Anisotropy ◽

Current Annealing ◽

Amorphous Microwires

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Stress Effects on Magnetic Properties of Amorphous Microwires Subjected to Current Annealing

EPJ Web of Conferences ◽

10.1051/epjconf/201818504030 ◽

2018 ◽

Vol 185 ◽

pp. 04030 ◽

Cited By ~ 1

Author(s):

Makhsudsho G. Nematov ◽

Nicolay A. Yudanov ◽

Rodion A. Yakubtsev ◽

Larissa V. Panina ◽

Anna V. Beklemisheva ◽

...

Keyword(s):

Magnetic Hysteresis ◽

Microwave Frequency ◽

Nominal Composition ◽

High Frequency Region ◽

Stress Effects ◽

Stress Sensors ◽

Directional Change ◽

Current Annealing ◽

Amorphous Microwires ◽

Helical Anisotropy

Effects of current annealing on magnetic hysteresis properties and magnetoimpedance (MI) of glass-coated amorphous microwires with nominal composition of Co71Fe5B11Si10Cr3 and small positive magnetostriction were investigated with the purpose to control the magnetic anisotropy. We have demonstrated that current annealing can produce a controllable change in the easy anisotropy direction from almost axial to circular, depending on the annealing time. The induced magnetization configuration is very sensitive to the applied tensile stress. The combination of positive magnetostriction and helical anisotropy makes it possible to realise large stress-magnetoimpedance (S-MI) effect without use of any dc bias fields owing to the directional change in magnetization. This is especially important for microwave frequency S-MI effect and can be very interesting for developing stress-sensors operating at the high frequency region.

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Concentration, And Temperature Dependences Of Exciton Transition Energies In AlxGa1-xAs/GaAs/AlxGa1-xAs Nanofilms

Ukrainian Journal of Physics ◽

10.15407/ujpe60.05.0458 ◽

2015 ◽

Vol 60 (5) ◽

pp. 458-467

Author(s):

D.V. Kondryuk ◽

◽

V.M. Kramar

Keyword(s):

Exciton Transition ◽

Transition Energies ◽

Temperature Dependences

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The Determination of the Magnetoelectric Coupling Coefficient in Ferroelectric–Ferromagnetic Composite Based on PZT–Ferrite

Archives of Metallurgy and Materials ◽

10.2478/amm-2013-0183 ◽

2013 ◽

Vol 58 (4) ◽

pp. 1401-1403 ◽

Cited By ~ 3

Author(s):

J.A. Bartkowska ◽

R. Zachariasz ◽

D. Bochenek ◽

J. Ilczuk

Keyword(s):

Dielectric Permittivity ◽

Coupling Coefficient ◽

Mean Field ◽

Field Approximation ◽

Theoretical Description ◽

Magnetoelectric Coupling ◽

Mean Field Approximation ◽

Dielectric Measurements ◽

Temperature Dependences ◽

Multiferroic Composite

Abstract In the present work, the magnetoelectric coupling coefficient, from the temperature dependences of the dielectric permittivity for the multiferroic composite was determined. The research material was ferroelectric-ferromagnetic composite on the based PZT and ferrite. We investigated the temperature dependences of the dielectric permittivity (") for the different frequency of measurement’s field. From the dielectric measurements we determined the temperature of phase transition from ferroelectric to paraelectric phase. For the theoretical description of the temperature dependence of the dielectric constant, the Hamiltonian of Alcantara, Gehring and Janssen was used. To investigate the dielectric properties of the multiferroic composite this Hamiltonian was expressed under the mean-field approximation. Based on dielectric measurements and theoretical considerations, the values of the magnetoelectric coupling coefficient were specified.

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