The magnetic properties of ultrathin FeBNbCu nanocrystalline alloy

Lee, J.S.; Kim, K.Y.; Noh, Tae Hwan; Kang, I. K.; Yoo, Young Zo

doi:10.1109/20.489810

Cited by 6 publications

(5 citation statements)

References 5 publications

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“…This is much lower than the 2.0 kWkg for F e~s N b~B~c u~ alloy with 7 pm thickness [2]. From these results, A1 addition is found to be very effective in improving the core loss property and we in the high frequency range.…”

Section: Id Results and Discussionmentioning

confidence: 74%

“…It is notable that the high-frequency characteristics of the alloy containing A1 are superior to those of the Al-free alloy [2], as shown in Fig. 4.…”

Section: Id Results and Discussionmentioning

confidence: 87%

“…5. The data for the Fe83NbYBgCu1 alloy with 7 pin thickness [2] and Fe78A14Nb5B12C~~ conventional ribbon alloy are also shown in this figure for comparison.…”

Section: Id Results and Discussionmentioning

confidence: 95%

“…Recently, the magnetic core materials are strongly required to have good high-frequency soft magnetic properties from the rapid progress of miniaturization of the electronic devices. In order to meet these demands, we have developed the ultrathin Fe-B-Nb-Cu nanocrystalline alloys with a thickness of less than 10 ,um which had very low core loss and high effective permeability at around 1 MHz [2].…”

Section: Introductionmentioning

confidence: 99%

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The magnetic properties of ultrathin Fe-Al-Nb-B-Cu nanocrystalline alloys

Park

Kim²,

Noh³

et al. 1996

IEEE Trans. Magn.

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The magnetic properties of ultrathin Fe7sA14NhsB12Cul nanocrystalline alloy ribbons with 9 , mu thickness and the effect of A1 additions to Fe-B-Nb-Cu alloy for improving the high-frequency magnetic properties were investigated. It was found that the effective permeability at frequencies over 100 kJ3z was higher and the core loss was lower for the composition Fe7sA14Nh5B12Cu1 alloy. Moreover, the reduction of the ribbon thickness to 9 , mu was very effective in improving their permeability and the core loss characteristics up to the MNz frequency range.

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Section: Id Results and Discussionmentioning

confidence: 74%

“…It is notable that the high-frequency characteristics of the alloy containing A1 are superior to those of the Al-free alloy [2], as shown in Fig. 4.…”

Section: Id Results and Discussionmentioning

confidence: 87%

“…5. The data for the Fe83NbYBgCu1 alloy with 7 pin thickness [2] and Fe78A14Nb5B12C~~ conventional ribbon alloy are also shown in this figure for comparison.…”

Section: Id Results and Discussionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The magnetic properties of ultrathin Fe-Al-Nb-B-Cu nanocrystalline alloys

Park

Kim²,

Noh³

et al. 1996

IEEE Trans. Magn.

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“…These good properties are preserved even for higher frequencies [1] and for higher temperatures, as was investigated in [2]. The applications of nanocrystalline cores have until now been mainly in pulsed power application systems [3], and some investigations have also been in the field of current transformers [4], [5].…”

Section: Introductionmentioning

confidence: 93%

Magnetic Circuit of a High-Voltage Transformer up to 10 kHz

2015

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Power and energy measurements in smart grids require a measurement system capable of performing signal processing at the higher harmonic frequencies that are present in power grids. For the calibration process of instrument voltage transformers, or high-voltage dividers, it is necessary to have a high-voltage source with an appropriate frequency range. The fundamental element of such a source is the output high-voltage transformer operating at a nominal voltage of 10 kV and in the frequency range from 200 Hz up to 10 kHz. The output current is assumed to be lower than 20 mA. This paper focuses on the design and realization of the magnetic circuit of the transformer described above. Trafoperm, ferrite or nanocrystalline materials can be used for the frequency range considered here. Ferrite materials usually reach saturation at a magnetic flux density of 0.2 T with very low permeability values, while trafoperm material usually suffers from unacceptable power losses in higher frequency areas. This is the main reason why these materials are not suitable for use in a wide range of frequencies, and some combined magnetic cores must be used. The proposed solution is based on magnetic cut C type cores made from nanocrystalline alloy (VITROPERM 500), which behaves better in the frequency range under consideration. The magnetic parameters of this material were measured and compared with trafoperm, and then, the 10 kV high-voltage transformer was designed and manufactured.

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