Nanocrystalline Soft Magnetic (Fe_0.7Co_0.3)₈₈Hf₂W₂Mo₂Zr₁B₄Cu₁ Alloy with Enhanced Thermal Stability of Magnetic Properties

Abstract:

Magnetic properties, structure and thermal stability of the (Fe_0.7Co_0.3)₈₈Hf₂W₂Mo₂Zr₁B₄Cu₁ alloy ribbon after its nanocrystallization at 620-750°C for 0-20 min in the presence or absence of tensile stresses σ were studied. It was shown that under the effect of tensile stresses a longitudinal magnetic anisotropy with an easy magnetization axis parallel to the long size of the ribbon was induced in the alloy. A better thermal stability of magnetic properties was observed for the alloy subjected to the nanocrystallization annealing at 620° for 20 min with σ = 170 MPa. After the subsequent annealing at 570°C for 25 h without σ, the magnetic properties of the alloy are unchanged. Increasing of the nanocrystallization annealing temperature up to 670-750°C did not result in improvement of the thermal stability of magnetic properties.

• Periodical: Solid State Phenomena (Volumes 233-234)
• Pages: 611-614
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.233-234.611
• Online since: July 2015
• Authors: Vera A. Lukshina*, Natalia V. Dmitrieva, Elena G. Volkova, Anatolii P. Potapov, Boris N. Filippov, D.A. Shishkin
• Keywords: Co-Based Nanocrystalline Alloy, Electron Microscopy, Magnetic Anisotropy, Magnetic Property, Nanocrystalline Fe-Based Alloys, Thermal Stability

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