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Directional Ordering in Amorphous Fe_{43}Ni_{43}Zr_7Cu_1B_6 Ferromagnetic Alloys

100%

Varga M., Varga R., Vojtaník P., Hernando B., Prida V., Santos J., Pérez M.

issue 5

804-806

Development of the atomic directional ordering in the Fe_{43}Ni_{43}Zr_7Cu_1B_6 alloy, during its conventional the same as after transverse magnetic field annealing, was experimentally studied by the amplitude dependence of susceptibility and hysteresis loops measurements, respectively. Diffusion processes of the mobile atoms caused perminvar effect, decrease of the initial susceptibility, increase of the critical field, and linear shape of the hysteresis loop. Uniaxial magnetic anisotropy, created during magnetic field annealing of the FeNiZrCuB alloy, was confirmed also by observation of the surface domain structure.

Susceptibility Spectroscopy in FeNiSiB Microwires

84%

Olivera J., Gamcova J., Varga R., Santos J., Prida V., Sanchez M., Hernando B., Zhukov A.

Acta Physica Polonica A

2008

vol. 113

issue 1

155-158

Here, we present the study on the influence of the Ni content on the magnetization processes of the amorphous glass-coated Fe_{77.5-x}Ni_xSi_{7.5}B_{15} (x = 0-40) microwires. Measurement of the amplitude dependence of the complex susceptibility was used to observe the magnetization process. It is shown that the magnetization process in the presented samples runs mainly through the domain wall motion.

Off-Diagonal Magnetoimpedance Dependence of Magnetostriction and Anisotropy in Co-Based and Fe-Based Amorphous Ribbons

84%

Sánchez T., García J., Santos J., Escoda L., Prida V., Sánchez M., Suñol J., Hernando B.

issue 5

756-758

The object of this work is the comparison of domain structure and off-diagonal magnetoimpedance effect in amorphous ribbons with different magnetostriction coefficient. The Co_{66}Fe_4Ni_1Si_{15}B_{14} and Fe_{80}B_{20} samples were obtained by melt-spinning. During the quenching procedure a 0.07 T transverse magnetic field was applied to some of the samples. Domain patterns obtained by the Bitter technique confirm that the differences on the samples are related to the different anisotropy and magnetostriction coefficient, and the quenching procedure. Small changes on the anisotropy distribution and the magnetostriction coefficient can be detected by the off-diagonal impedance spectra as a consequence of the different permeability values of the samples.

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3 Acta Physica Polonica A

2 2010

1 2008

3 Hernando B.

3 Prida V.

3 Santos J.

2 Varga R.

1 Escoda L.

1 Gamcova J.

1 García J.

1 Olivera J.

1 Pérez M.

1 Sanchez M.

1 Suñol J.

1 Sánchez M.

1 Sánchez T.

1 Varga M.

1 Vojtaník P.

1 Zhukov A.

Search results

Directional Ordering in Amorphous Fe_{43}Ni_{43}Zr_7Cu_1B_6 Ferromagnetic Alloys

Susceptibility Spectroscopy in FeNiSiB Microwires

Off-Diagonal Magnetoimpedance Dependence of Magnetostriction and Anisotropy in Co-Based and Fe-Based Amorphous Ribbons