Influence of niobium on laser de-vitrification of Fe-Si-B based amorphous magnetic alloys

Talukder Alam; Tushar Borkar; Sameehan S. Joshi; Shravan Katakam; X. Chen; Narendra B. Dahotre; Raju V. Ramanujan; Rajarshi Banerjee

doi:10.1016/j.jnoncrysol.2015.08.001

Influence of niobium on laser de-vitrification of Fe-Si-B based amorphous magnetic alloys

Talukder Alam, Tushar Borkar, Sameehan S. Joshi, Shravan Katakam, X. Chen, Narendra B. Dahotre, Raju V. Ramanujan, Rajarshi Banerjee^*

^*Corresponding author for this work

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

25 Citations (Scopus)

Abstract

Laser annealing of Fe_77.5Si_13.5B₉ and Fe_76.5Si_13.5B₉Cu₁ amorphous melt-spun ribbons was carried out. In both alloys, it was found that devitrification occurred, leading to the nucleation of a high density of refined α-Fe(Si) nanocrystals within the amorphous matrix. Interestingly, when laser processed under identical conditions, Fe_74.5Si_13.5B₉Nb₃, and Fe_73.5Si_13.5B₉Nb₃Cu₁ (FINEMET) amorphous melt-spun ribbons did not exhibit devitrification or copper clustering. Differences in the magnetic properties were observed, with the Fe_77.5Si_13.5B₉ and Fe_76.5Si_13.5B₉Cu₁ alloys exhibiting higher saturation magnetization (M_S) and higher coercivity (H_C) values while Fe_74.5Si_13.5B₉Nb₃, and Fe_73.5Si_13.5B₉Nb₃Cu₁ alloys exhibited lower values of both these properties. These results clearly reveal the enhanced stability of the amorphous phase due to the addition of Nb in Fe-Si-B based melt-spun samples.

Original language	English
Pages (from-to)	75-81
Number of pages	7
Journal	Journal of Non-Crystalline Solids
Volume	428
DOIs	https://doi.org/10.1016/j.jnoncrysol.2015.08.001
Publication status	Published - Nov 15 2015
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

Keywords

Atom probe tomography (APT)
Laser devitrification
Magnetic measurements
Soft magnetric material
Transmission electron microscopy (TEM)

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10.1016/j.jnoncrysol.2015.08.001

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title = "Influence of niobium on laser de-vitrification of Fe-Si-B based amorphous magnetic alloys",

abstract = "Laser annealing of Fe77.5Si13.5B9 and Fe76.5Si13.5B9Cu1 amorphous melt-spun ribbons was carried out. In both alloys, it was found that devitrification occurred, leading to the nucleation of a high density of refined α-Fe(Si) nanocrystals within the amorphous matrix. Interestingly, when laser processed under identical conditions, Fe74.5Si13.5B9Nb3, and Fe73.5Si13.5B9Nb3Cu1 (FINEMET) amorphous melt-spun ribbons did not exhibit devitrification or copper clustering. Differences in the magnetic properties were observed, with the Fe77.5Si13.5B9 and Fe76.5Si13.5B9Cu1 alloys exhibiting higher saturation magnetization (MS) and higher coercivity (HC) values while Fe74.5Si13.5B9Nb3, and Fe73.5Si13.5B9Nb3Cu1 alloys exhibited lower values of both these properties. These results clearly reveal the enhanced stability of the amorphous phase due to the addition of Nb in Fe-Si-B based melt-spun samples.",

keywords = "Atom probe tomography (APT), Laser devitrification, Magnetic measurements, Soft magnetric material, Transmission electron microscopy (TEM)",

author = "Talukder Alam and Tushar Borkar and Joshi, {Sameehan S.} and Shravan Katakam and X. Chen and Dahotre, {Narendra B.} and Ramanujan, {Raju V.} and Rajarshi Banerjee",

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doi = "10.1016/j.jnoncrysol.2015.08.001",

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pages = "75--81",

journal = "Journal of Non-Crystalline Solids",

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T1 - Influence of niobium on laser de-vitrification of Fe-Si-B based amorphous magnetic alloys

AU - Alam, Talukder

AU - Borkar, Tushar

AU - Joshi, Sameehan S.

AU - Katakam, Shravan

AU - Chen, X.

AU - Dahotre, Narendra B.

AU - Ramanujan, Raju V.

AU - Banerjee, Rajarshi

PY - 2015/11/15

Y1 - 2015/11/15

N2 - Laser annealing of Fe77.5Si13.5B9 and Fe76.5Si13.5B9Cu1 amorphous melt-spun ribbons was carried out. In both alloys, it was found that devitrification occurred, leading to the nucleation of a high density of refined α-Fe(Si) nanocrystals within the amorphous matrix. Interestingly, when laser processed under identical conditions, Fe74.5Si13.5B9Nb3, and Fe73.5Si13.5B9Nb3Cu1 (FINEMET) amorphous melt-spun ribbons did not exhibit devitrification or copper clustering. Differences in the magnetic properties were observed, with the Fe77.5Si13.5B9 and Fe76.5Si13.5B9Cu1 alloys exhibiting higher saturation magnetization (MS) and higher coercivity (HC) values while Fe74.5Si13.5B9Nb3, and Fe73.5Si13.5B9Nb3Cu1 alloys exhibited lower values of both these properties. These results clearly reveal the enhanced stability of the amorphous phase due to the addition of Nb in Fe-Si-B based melt-spun samples.

AB - Laser annealing of Fe77.5Si13.5B9 and Fe76.5Si13.5B9Cu1 amorphous melt-spun ribbons was carried out. In both alloys, it was found that devitrification occurred, leading to the nucleation of a high density of refined α-Fe(Si) nanocrystals within the amorphous matrix. Interestingly, when laser processed under identical conditions, Fe74.5Si13.5B9Nb3, and Fe73.5Si13.5B9Nb3Cu1 (FINEMET) amorphous melt-spun ribbons did not exhibit devitrification or copper clustering. Differences in the magnetic properties were observed, with the Fe77.5Si13.5B9 and Fe76.5Si13.5B9Cu1 alloys exhibiting higher saturation magnetization (MS) and higher coercivity (HC) values while Fe74.5Si13.5B9Nb3, and Fe73.5Si13.5B9Nb3Cu1 alloys exhibited lower values of both these properties. These results clearly reveal the enhanced stability of the amorphous phase due to the addition of Nb in Fe-Si-B based melt-spun samples.

KW - Atom probe tomography (APT)

KW - Laser devitrification

KW - Magnetic measurements

KW - Soft magnetric material

KW - Transmission electron microscopy (TEM)

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Influence of niobium on laser de-vitrification of Fe-Si-B based amorphous magnetic alloys

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Keywords

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