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High frequency magnetoimpedance response of stress annealed Co66.3Fe3.7Si12.0B18.0 amorphous alloy ribbons
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10.1063/1.4813101
/content/aip/journal/jap/114/2/10.1063/1.4813101
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/2/10.1063/1.4813101

Figures

Image of FIG. 1.
FIG. 1.

Hysteresis loops at 50 Hz measured parallel to the ribbon axis for three selected CoFeSiB ribbons after different annealing. Sample 1, stress annealing at 400 °C with 300 MPa during 1 h (a), sample 2, 1 h stress relaxation at 340 °C followed by 1 h stress annealing at 340 °C with 300 MPa (b), and sample 3, 1 h stress relaxation at 360 °C followed by 1 h stress annealing at 360 °C with 300 MPa (c).

Image of FIG. 2.
FIG. 2.

Impedance of samples treated by stress-annealing 400 °C with 300 MPa during 1 h (sample 1), as a function of the magnetic field applied in the ribbon direction, for different frequency values in the range 10–1000 MHz.

Image of FIG. 3.
FIG. 3.

Impedance of samples pre-annealed (a) at 340 °C during 1 h and then treated by stress-annealing at 340 °C with 300 MPa during 1 h (sample 2) and (b) pre-annealed at 360 °C during 1 h and then treated by stress-annealing at 360 °C with 300 MPa during 1 h (sample 3), as a function of the magnetic field applied in the ribbon direction, for different frequency values in the range 10–1000 MHz.

Image of FIG. 4.
FIG. 4.

Impedance as a function of the increasing and decreasing bias magnetic field for all investigated stress annealed samples. The drive frequency was equal to 500 MHz.

Image of FIG. 5.
FIG. 5.

Frequency dependence (range: 0.5–3.0 GHz) of the anisotropy field for all ribbons with different stress induced magnetic anisotropy. Symbols denote experimental data and lines denote guides for the eye.

Tables

Generic image for table
Table I.

Fitting equations for the anisotropy field as a function of the frequency in the range 500–1000 MHz of stress annealed ribbons.

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/content/aip/journal/jap/114/2/10.1063/1.4813101
2013-07-09
2014-04-19
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: High frequency magnetoimpedance response of stress annealed Co66.3Fe3.7Si12.0B18.0 amorphous alloy ribbons
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/2/10.1063/1.4813101
10.1063/1.4813101
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