Structure, stresses and magnetic properties of iron-based amorphous alloys with phosphorus after heat treatment giving rise to surface crystallization

Makarov, V. A.; Zaichenko, S.G.; Zaitsev, A. I.; Kachalov, V. M.

doi:10.1016/0304-8853(94)90566-5

Cited by 3 publications

(1 citation statement)

References 4 publications

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“…Equation ( 3) may be first analysed by taking the magnetoelastic (E M = 3V σ λ S /2) and the surface (E S = AK S ) energies, which determine a critical Therefore, surface/interface effects would only be relevant in temperature intervals in the neighbourhood of the Al deposition for x = 20 µm. As well known, in as-quenched ribbons, the K N s (parallel and perpendicular) are introduced by the ultra-rapid freezing process: the unidimensional motion of the ribbon, the thermal gradients between the sides of the forming ribbons in contact with the cold wheel and the atmosphere, etc (Greneche et al 1982, Greneche and Varret 1982a, 1982b, Fish 1990, Makarov et al 1994, Hubert et al 1990. Therefore, at the Al deposition temperature, the magnetization orientation distribution can be mainly attributed to the distribution of native anisotropies, defining two volume fractions: V related to native in-plane anisotropy K N , and V ⊥ related to native out-of-plane anisotropy K N⊥ .…”

Section: Resultsmentioning

confidence: 99%

Magnetic domain structure and anisotropy distribution in Al/Metglas 2605S2/Al trilayers

Moscon¹,

Sánchez²,

Passamani³

et al. 2008

J. Phys. D: Appl. Phys.

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Al coatings, with thickness (x) up to 20 µm, were deposited by dc sputtering on both sides of the Metglas 2605S2 precursor melt-spun ribbons. Spin reorientation, induced by the magnetoelastic effect, was clearly observed in the Al/Metglas 2605S2/Al trilayers by monitoring the 2 and 5 line intensities of the Mössbauer spectra obtained at different temperatures. The average spin orientation angles can be controlled by adjusting the Al thickness. A magneto-mechanical coefficient, which measures the rate of spin reorientation with respect to the temperature variation, was obtained and is found to be equal to −0.15 • K −1 and −0.28 • K −1 for x = 5 µm and 20 µm, respectively. Using a spin structure phenomenological model, in-plane native magnetic anisotropies ranging up to 3 kJ m −3 were estimated for the Metglas 2605S2 ribbons. Energy anisotropy values higher than 20 kJ m −3 are associated with inhomogeneities and defects from the sample preparation method and may correspond to about 10% of the ribbon volume.

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Section: Resultsmentioning

confidence: 99%

Magnetic domain structure and anisotropy distribution in Al/Metglas 2605S2/Al trilayers

Moscon¹,

Sánchez²,

Passamani³

et al. 2008

J. Phys. D: Appl. Phys.

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Synergistic effects of microstructural inhomogeneity and phase-transformation-induced plasticity for ductility improvements in metallic glass composites

Zhao

Wang

et al. 2022

Materials Science and Engineering: A

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Study on the Magnetic Property Deterioration of Amorphous Cores

Wang¹,

Zhang²,

Fu³

2014

AMR

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In order to solve the problem of the magnetic property deterioration of the amorphous cores annealed under high absolute water content condition, the deterioration mechanism was studied by using the SEM and X-ray diffraction equipment. The experimental results indicate that the magnetic properties deterioration of the amorphous cores is mainly related with the oxidation of the amorphous cores. It has been found that the oxidation occurred on the surface of the annealed amorphous materials. What’s more, the oxidation formed at the defects of the amorphous materials in priority. Thus the surface quality has a major impact on the oxidation and the magnetic properties deterioration. By analysis of the possibility of the chemical reaction, it is believed that the oxidation is caused by the Fe or B reaction with H2O. With the holding time increased, the oxides size and quantity increased. To reduce the influence of the H2O in the air on the magnetic properties deterioration of the amorphous materials during heat treatment, the experiment by aerating the N2 to the heat treatment furnace was performed. The experiment result proves that the magnetic properties of the amorphous cores were improved during annealing in N2, which almost reaches the same level of the amorphous cores annealed under low absolute water content condition.

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Structure, stresses and magnetic properties of iron-based amorphous alloys with phosphorus after heat treatment giving rise to surface crystallization

Cited by 3 publications

References 4 publications

Magnetic domain structure and anisotropy distribution in Al/Metglas 2605S2/Al trilayers

Magnetic domain structure and anisotropy distribution in Al/Metglas 2605S2/Al trilayers

Synergistic effects of microstructural inhomogeneity and phase-transformation-induced plasticity for ductility improvements in metallic glass composites

Study on the Magnetic Property Deterioration of Amorphous Cores

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