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Soft magnetic properties of nanocrystalline Fe73B7Si16Nb3Cu1 alloy after rapid heating under tensile stress.

Nosenko A, Mika T, Rudenko O, Yarmoshchuk Y, Nosenko V - Nanoscale Res Lett (2015)

Bottom Line: As a result, strong transverse magnetic anisotropy was induced in the ribbon.Tensile stress increase from 0 to 180 MPa was shown to result in the decrease of the initial magnetic permeability down to 400 and core loss at frequencies from 0.4 to 200 kHz.The magnetic properties of the latter cores are advantageous for manufacturing the reactors and linear chokes of switch-mode power supplies.

View Article: PubMed Central - PubMed

Affiliation: G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine, 36, Academician Vernadsky Boulevard, Kyiv, 03142 Ukraine.

ABSTRACT
Amorphous Fe73B7Si16Nb3Cu1 ribbon was crystallized rapidly by electric current heating under simultaneously applied tensile stress along the ribbon axis. As a result, strong transverse magnetic anisotropy was induced in the ribbon. Dynamic magnetic properties of the ribbons rapidly heated either under the tensile stress or without tensile stress were measured using toroidal cores. Optimal electric current heating regime that provides maximum improvement of the initial magnetic permeability and core loss was determined. Tensile stress increase from 0 to 180 MPa was shown to result in the decrease of the initial magnetic permeability down to 400 and core loss at frequencies from 0.4 to 200 kHz. Comparative analysis of magnetic properties of the cut core (with non-magnetic gap) and the cores heated under tensile stress was carried out. The magnetic properties of the latter cores are advantageous for manufacturing the reactors and linear chokes of switch-mode power supplies.

No MeSH data available.


Related in: MedlinePlus

Ribbon resistivity vs. current densityjh. Heating time th = 10 s.
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Fig2: Ribbon resistivity vs. current densityjh. Heating time th = 10 s.

Mentions: Figure 2 shows the dependence of ribbon resistivity on current density. Based on this dependence, there is the optimum current density jh that ensures minimal resistivity ρ after heating. Such current provides optimal temperature of the ribbon and its nanocrystallization during the chosen time - 10 s. It is possible that optimal density should be slightly larger for shorter times of heating.Figure 2


Soft magnetic properties of nanocrystalline Fe73B7Si16Nb3Cu1 alloy after rapid heating under tensile stress.

Nosenko A, Mika T, Rudenko O, Yarmoshchuk Y, Nosenko V - Nanoscale Res Lett (2015)

Ribbon resistivity vs. current densityjh. Heating time th = 10 s.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4385284&req=5

Fig2: Ribbon resistivity vs. current densityjh. Heating time th = 10 s.
Mentions: Figure 2 shows the dependence of ribbon resistivity on current density. Based on this dependence, there is the optimum current density jh that ensures minimal resistivity ρ after heating. Such current provides optimal temperature of the ribbon and its nanocrystallization during the chosen time - 10 s. It is possible that optimal density should be slightly larger for shorter times of heating.Figure 2

Bottom Line: As a result, strong transverse magnetic anisotropy was induced in the ribbon.Tensile stress increase from 0 to 180 MPa was shown to result in the decrease of the initial magnetic permeability down to 400 and core loss at frequencies from 0.4 to 200 kHz.The magnetic properties of the latter cores are advantageous for manufacturing the reactors and linear chokes of switch-mode power supplies.

View Article: PubMed Central - PubMed

Affiliation: G.V. Kurdyumov Institute for Metal Physics of National Academy of Sciences of Ukraine, 36, Academician Vernadsky Boulevard, Kyiv, 03142 Ukraine.

ABSTRACT
Amorphous Fe73B7Si16Nb3Cu1 ribbon was crystallized rapidly by electric current heating under simultaneously applied tensile stress along the ribbon axis. As a result, strong transverse magnetic anisotropy was induced in the ribbon. Dynamic magnetic properties of the ribbons rapidly heated either under the tensile stress or without tensile stress were measured using toroidal cores. Optimal electric current heating regime that provides maximum improvement of the initial magnetic permeability and core loss was determined. Tensile stress increase from 0 to 180 MPa was shown to result in the decrease of the initial magnetic permeability down to 400 and core loss at frequencies from 0.4 to 200 kHz. Comparative analysis of magnetic properties of the cut core (with non-magnetic gap) and the cores heated under tensile stress was carried out. The magnetic properties of the latter cores are advantageous for manufacturing the reactors and linear chokes of switch-mode power supplies.

No MeSH data available.


Related in: MedlinePlus