Effect of Temperature of Long Annealing on the Structure and Magnetic Properties of Nanocrystalline FeSiNbCuB Alloy

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Effect of Temperature of Long Annealing on the Structure and Magnetic Properties of Nanocrystalline FeSiNbCuB Alloy. / Ershov, N. V.; Lukshina, V. A.; Shishkin, D. A. et al.
In: Physics of the Solid State, Vol. 63, No. 7, 07.2021, p. 978-991.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{38fd655253e74b70935c84d6d8a88ed2,

title = "Effect of Temperature of Long Annealing on the Structure and Magnetic Properties of Nanocrystalline FeSiNbCuB Alloy",

abstract = "The dependence of soft magnetic properties of the Fe73.5Si13.5Nb3Cu1B9 alloy on the 2-hour air annealing temperature Tan at temperatures from 520 to 620°C is studied. It is shown that the magnetic hysteresis loop is significantly broadens and becomes more inclined, and the Curie temperature of the amorphous matrix surrounding α-FeSi nanocrystals decreases with increasing Tan. The atomic structure and phase composition of alloy samples are studied by transmission X-ray diffraction. After annealing at temperatures to 580°C, nanocrystals contain mostly D03 phase (Fe3Si stoichiometry) and are ~7 nm in average size. Their relative fraction in the alloy increases with temperature due to additional iron diffusion from the matrix to nanocrystals. After annealings at Tan > 600°C, the average nanocrystal size increases, and iron boride crystal reflections appear in X-ray diffraction patterns. Degradation of soft magnetic properties of nanocrystalline Fe73.5Si13.5Nb3Cu1B9 alloy with annealing temperature from 520 to 580°C is explained by a decrease in the silicon concentration in FeSi nanocrystals, which results in an increase in the magnetocrystalline anisotropy",

author = "Ershov, {N. V.} and Lukshina, {V. A.} and Shishkin, {D. A.} and Chernenkov, {Yu. P.} and Smirnov, {O. P.}",

note = "This study was supported within the State contract on the subject “Magnet” no. АААА-А18-118020290129-5 and the project no. 18-10-2-5 of the Ural Branch of Russian Academy of Sciences. ",

year = "2021",

month = jul,

doi = "10.1134/S1063783421070076",

language = "English",

volume = "63",

pages = "978--991",

journal = "Physics of the Solid State",

issn = "1063-7834",

publisher = "American Institute of Physics Publising LLC",

number = "7",

}

RIS

TY - JOUR

T1 - Effect of Temperature of Long Annealing on the Structure and Magnetic Properties of Nanocrystalline FeSiNbCuB Alloy

AU - Ershov, N. V.

AU - Lukshina, V. A.

AU - Shishkin, D. A.

AU - Chernenkov, Yu. P.

AU - Smirnov, O. P.

N1 - This study was supported within the State contract on the subject “Magnet” no. АААА-А18-118020290129-5 and the project no. 18-10-2-5 of the Ural Branch of Russian Academy of Sciences.

PY - 2021/7

Y1 - 2021/7

N2 - The dependence of soft magnetic properties of the Fe73.5Si13.5Nb3Cu1B9 alloy on the 2-hour air annealing temperature Tan at temperatures from 520 to 620°C is studied. It is shown that the magnetic hysteresis loop is significantly broadens and becomes more inclined, and the Curie temperature of the amorphous matrix surrounding α-FeSi nanocrystals decreases with increasing Tan. The atomic structure and phase composition of alloy samples are studied by transmission X-ray diffraction. After annealing at temperatures to 580°C, nanocrystals contain mostly D03 phase (Fe3Si stoichiometry) and are ~7 nm in average size. Their relative fraction in the alloy increases with temperature due to additional iron diffusion from the matrix to nanocrystals. After annealings at Tan > 600°C, the average nanocrystal size increases, and iron boride crystal reflections appear in X-ray diffraction patterns. Degradation of soft magnetic properties of nanocrystalline Fe73.5Si13.5Nb3Cu1B9 alloy with annealing temperature from 520 to 580°C is explained by a decrease in the silicon concentration in FeSi nanocrystals, which results in an increase in the magnetocrystalline anisotropy

AB - The dependence of soft magnetic properties of the Fe73.5Si13.5Nb3Cu1B9 alloy on the 2-hour air annealing temperature Tan at temperatures from 520 to 620°C is studied. It is shown that the magnetic hysteresis loop is significantly broadens and becomes more inclined, and the Curie temperature of the amorphous matrix surrounding α-FeSi nanocrystals decreases with increasing Tan. The atomic structure and phase composition of alloy samples are studied by transmission X-ray diffraction. After annealing at temperatures to 580°C, nanocrystals contain mostly D03 phase (Fe3Si stoichiometry) and are ~7 nm in average size. Their relative fraction in the alloy increases with temperature due to additional iron diffusion from the matrix to nanocrystals. After annealings at Tan > 600°C, the average nanocrystal size increases, and iron boride crystal reflections appear in X-ray diffraction patterns. Degradation of soft magnetic properties of nanocrystalline Fe73.5Si13.5Nb3Cu1B9 alloy with annealing temperature from 520 to 580°C is explained by a decrease in the silicon concentration in FeSi nanocrystals, which results in an increase in the magnetocrystalline anisotropy

UR - https://www.elibrary.ru/item.asp?id=47544343

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U2 - 10.1134/S1063783421070076

DO - 10.1134/S1063783421070076

M3 - Article

VL - 63

SP - 978

EP - 991

JO - Physics of the Solid State

JF - Physics of the Solid State

SN - 1063-7834

IS - 7

ER -

ID: 29480915