Nanocrystalline Soft Magnetic (Fe0.7Co0.3)88Hf2W2Mo2Zr1B4Cu1 Alloy with Enhanced Thermal Stability of Magnetic Properties

Author:

Lukshina Vera A.1,Dmitrieva Natalia V.1,Volkova Elena G.1,Potapov Anatolii P.1,Filippov Boris N.1,Shishkin D.A.1

Affiliation:

1. RAS

Abstract

Magnetic properties, structure and thermal stability of the (Fe0.7Co0.3)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.

Publisher

Trans Tech Publications, Ltd.

Subject

Condensed Matter Physics,General Materials Science,Atomic and Molecular Physics, and Optics

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