Recent advances in rapidly solidified soft magnetic materials

Hilzinger, H. R.

doi:10.1016/0304-8853(90)90552-2

Cited by 40 publications

(10 citation statements)

References 18 publications

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“…The heat treatment at 580°C leads to the magnetomechanical coupling as small as 0.08, and annealing at 600°C makes the coupling undetectable within this method. The decrease in magnetomechanical coupling can be explained by the drop of magnetostriction with the onset of the nanocrystallization [5][6][7]. The decrease in the maximum dynamical impedance begins only at the temperatures above 550°C, when the nanocrystalline phase is well developed.…”

Section: Resultsmentioning

confidence: 99%

Effect of Nanocrystallization Process on the Magnetomechanical Coupling in Fe-Si-B-Cu-Nb Alloy

et al. 1994

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Magnetic and magnetoelastic properties of the Fe73.5Si16.5B6Cu1Nb3 alloy change considerably during nanocrystallization process. Improvement of magnetic properties is accompanied by the decrease in piezomagnetic parameters such as magnetomechanical coupling and ΔE-effect.PACS numbers: 75.80.+q; 75.60.Nt, 75.60.Ch Samples and measuring methodsNanocrystalline or "FINEMET" alloys [1] can be produced from some amorphous alloys by the proper annealing treatment. Samples of amorphous alloy of composition Fe73.5Si16.5B6Cu1Nb3 were annealed at temperatures ranging from 490°C to 600°C for 5 minutes in order to produce different degree of nanocrystalline phase in the samples. The heating rate was about 20 K/min. The annealings were performed at helium atmosphere in the presence of saturating magnetic field, oriented transversely to the sample length. Resonance-antiresonance method [2] was used to measure magnetomechanical coupling in the samples. Magnetomechanical coupling coefficient k was determined from the resonant (fr) and antiresonant (fa) frequencies of the free vibrating samples in the form of stripsThe dynamical impedance Z of the measuring resonant circuit was also considered. Magnetic domain structures were studied using Kerr effect method.(201)

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Section: Resultsmentioning

confidence: 99%

Effect of Nanocrystallization Process on the Magnetomechanical Coupling in Fe-Si-B-Cu-Nb Alloy

et al. 1994

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“…The other is the grain size dependent coercivity. The grain size decreases with the surface velocity [7,8] under the melt spinning condition, which will lead to the increase in the coercive force if the grain size is in the micrometer scale [9][10][11]. This is not preferred normally for soft magnetic materials.…”

Section: Introductionmentioning

confidence: 94%

Interactive contribution of grain size and grain orientation to coercivity of melt spun ribbons

Wang

Yao

et al. 2010

Journal of Magnetism and Magnetic Materials

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“…Therefore, the rapid solidification route emerges as a potential technique for the fabrication of Fe-6.5 wt% Si alloys [13][14]. During the course of annealing treatment, the ordered phases B2 and DO 3 form and affect the magnetic properties.…”

Section: Introductionmentioning

confidence: 99%

Development of rapidly solidified 6.5 wt% silicon steel for magnetic applications

Roy

Ghosh

Panda

et al. 2010

Trans Indian Inst Met

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The 6.5wt% Silicon steel has always a technological importance owing to its soft magnetic properties and low core losses. In this research, this steel is prepared in the form of continuous ribbons of 25 mm width and 35 mm thickness by rapid solidification technique using melt spinner. The as-cast ribbons show single phase of α-FeSi as observed from x-ray diffraction. By transmission electron microscopy (TEM), the alloy shows disordered A2 structure in as-cast ribbon while B2 ordered phase forms from the A2 matrix at annealed condition. Two magnetization temperatures are observed at 670 and 760 o C due to the phase transformation of B2 and A2 structures, respectively. The alloy showed enhancement in the soft magnetic properties with reduction in coercivity from 1.90Oe in the as-cast state to 0.58Oe when annealed at 850 o C. The lowering of coercivity is due to the formation of ordered B2 phase during annealing.

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Recent advances in rapidly solidified soft magnetic materials

Cited by 40 publications

References 18 publications

Effect of Nanocrystallization Process on the Magnetomechanical Coupling in Fe-Si-B-Cu-Nb Alloy

Effect of Nanocrystallization Process on the Magnetomechanical Coupling in Fe-Si-B-Cu-Nb Alloy

Interactive contribution of grain size and grain orientation to coercivity of melt spun ribbons

Development of rapidly solidified 6.5 wt% silicon steel for magnetic applications

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