Results 151 to 160 of about 4,125 (189)

Magnetization switching in ferromagnetic microwires

Physical Review B, 2010
Magnetization states of amorphous soft ferromagnetic microwires are studied by experiment and theoretically. It is shown that in low applied axial fields, on increasing the circular magnetic field produced by current, the initial homogeneous circular magnetization distribution evolves in three sequential steps: (i) the appearance of a helical ...
A. Chizhik, V. Zablotskii, A. Stupakiewicz, C. Gómez-Polo, A. Maziewski, A. Zhukov, J. Gonzalez, J. M. Blanco   +7 more
openaire   +1 more source

Tuning of Magnetic Properties of Magnetic Microwires

IEEE Magnetics Letters, 2018
Techniques for fine tuning the magnetic properties of glass-covered amorphous microwires are discussed. They include selection of nominal components and geometric proportions, conditions for thermal treatment, and application of mechanical stress and crossed magnetic fields.
Alexander Chizhik, Julian Gonzalez, Paula Corte-Leon, Arcady Zhukov, Andrzej Stupakiewicz   +4 more
openaire   +1 more source

Fast magnetic domain wall in magnetic microwires

Physical Review B, 2006
The propagation of domain walls in magnetic microwires has been investigated over the temperature range $77\text{--}373\phantom{\rule{0.3em}{0ex}}\mathrm{K}$. Very high domain wall velocities, up to $1800\phantom{\rule{0.3em}{0ex}}\mathrm{m}∕\mathrm{s}$, were observed, in combination with enhanced domain wall mobilities at high temperature. In contrast,
R. Varga, A. Zhukov, J. M. Blanco, null M. Ipatov, V. Zhukova, J. Gonzalez, P. Vojtaník   +6 more
openaire   +1 more source

Magnetic-flux-induced conductance steps in microwires

Physical Review B, 1993
We predict a new type of steplike fluctuations in the magnetoconductance of three-dimensional ballistic microwires. These mesoscopic fluctuations, which appear on a scale corresponding to a small fraction of the quantum unit of magnetic flux ${\mathrm{\ensuremath{\Phi}}}_{0}$=hc/e, are a novel manifestation of the Aharonov-Bohm effect.
, Bogachek, , Jonson, , Shekhter, , Swahn   +3 more
openaire   +2 more sources

Temperature-Dependent Magnetic Properties of Magnetically Biphase Microwires

IEEE Transactions on Magnetics, 2011
The magnetic behaviour of soft/hard biphase magnetic microwires has been studied as a function of temperature in the range 25°C to 900°C. The microwires consist of an ultrasoft CoFe-based vanishing magnetostriction amorphous core covered by insulating Pyrex coating prepared by quenching and drawing, plus an electroplated CoNi magnetically harder ...
Valeria Rodionova, Alexander Nikoshin, Jacob Torrejon, Giovanni A. Badini-Confalonieri, Nikolai Perov, Manuel Vazquez   +5 more
openaire   +1 more source

Circular domains nucleation in magnetic microwires

Applied Physics Letters, 2013
We report on the nucleation of circular domains in the outer shell of magnetic, Co-rich, amorphous microwires over a wide range of magnetic field pulse frequencies and amplitudes. Nucleation in the low barrier regime of different numbers of single domains was detected using the magneto-optical Kerr effect.
A. Chizhik, V. Zablotskii, A. Stupakiewicz, A. Dejneka, T. Polyakova, M. Tekielak, A. Maziewski, A. Zhukov, J. Gonzalez   +8 more
openaire   +1 more source

Rare earth-free hard magnetic microwires

Scripta Materialia, 2018
Abstract Novel microwires of composition MnBi were obtained by means of quenching and drawing technique having a metallic nucleus of 50 μm diameter. Phase distribution analysis showed a composite microstructure comprising extensive zones of the ferromagnetic hexagonal MnBi phase (of up to 12 μm), interspersed within a matrix of diamagnetic Bi and ...
I. Betancourt, J. Zamora, A. Jiménez, R.P. del Real, M. Vázquez   +4 more
openaire   +1 more source

Soft magnetic microwires for sensor applications

Journal of Magnetism and Magnetic Materials, 2020
Abstract We provide an overview of the routes allowing the optimization of magnetic softness, giant magnetoimpedance (GMI) effect and domain wall dynamics in one of the families of magnetic microwires: glass –coated microwires prepared using Taylor-Ulitovsky method.
A. Zhukov, M. Ipatov, P. Corte-León, L. Gonzalez-Legarreta, J.M. Blanco, V. Zhukova   +5 more
openaire   +1 more source

Microwave Metamaterials Containing Magnetically Soft Microwires

Advances in Science and Technology, 2010
In this paper we discuss the development of metamaterials containing ferromagnetic microwires which makes it possible to tune the electromagnetic response in the microwave frequency band. Metallic wire media are known to demonstrate very strong dispersion of the effective permittivity at GHz frequencies.
Mihail Ipatov, V. Zhukova, Arcady P. Zhukov, Larissa V. Panina   +3 more
openaire   +1 more source

Tunable Magnetic Anisotropy and Magnetization Reversal in Microwires

2017
Surface magnetization reversal of Co-rich and Fe-rich amorphous glass covered microwires in the presence of torsion mechanical stress has been studied by magneto-optical Kerr effect. The dependence of the angle of the helical anisotropy on the applied torsion stress has been obtained based on the analysis of the magneto-optical experimental results ...
A. Chizhik, A. Stupakiewicz, J. Gonzalez
openaire   +1 more source