Improved soft magnetic properties by laser de-vitrification of Fe-Si-B amorphous magnetic alloys

Casey Smith; Shravana Katakam; Soumya Nag; Xi Chen; Raju V. Ramanujan; Narendra B. Dahotre; Rajarshi Banerjee

doi:10.1016/j.matlet.2014.02.002

Improved soft magnetic properties by laser de-vitrification of Fe-Si-B amorphous magnetic alloys

Casey Smith, Shravana Katakam, Soumya Nag, Xi Chen, Raju V. Ramanujan, Narendra B. Dahotre, Rajarshi Banerjee^*

^*Corresponding author for this work

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

19 Citations (Scopus)

Abstract

Devitrification of Fe-Si-B melt-spun ribbons by laser annealing, instead of typical furnace-annealing, led to substantially refined α-Fe(Si) nanocrystals nucleating within the amorphous matrix with a large number density of nucleation sites. This microstructural refinement due to laser devitrification leads to substantially improved soft magnetic properties with a drastic, 25 times, reduction in the coercivity, while maintaining the saturation magnetization values comparable to the furnace-annealed condition, making laser-annealing a very attractive devitrification route for these soft magnetic alloys.

Original language	English
Pages (from-to)	155-158
Number of pages	4
Journal	Materials Letters
Volume	122
DOIs	https://doi.org/10.1016/j.matlet.2014.02.002
Publication status	Published - May 1 2014
Externally published	Yes

ASJC Scopus Subject Areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Keywords

Crystallization
Laser processing
Soft magnet

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10.1016/j.matlet.2014.02.002

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title = "Improved soft magnetic properties by laser de-vitrification of Fe-Si-B amorphous magnetic alloys",

abstract = "Devitrification of Fe-Si-B melt-spun ribbons by laser annealing, instead of typical furnace-annealing, led to substantially refined α-Fe(Si) nanocrystals nucleating within the amorphous matrix with a large number density of nucleation sites. This microstructural refinement due to laser devitrification leads to substantially improved soft magnetic properties with a drastic, 25 times, reduction in the coercivity, while maintaining the saturation magnetization values comparable to the furnace-annealed condition, making laser-annealing a very attractive devitrification route for these soft magnetic alloys.",

keywords = "Crystallization, Laser processing, Soft magnet",

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T1 - Improved soft magnetic properties by laser de-vitrification of Fe-Si-B amorphous magnetic alloys

AU - Smith, Casey

AU - Katakam, Shravana

AU - Nag, Soumya

AU - Chen, Xi

AU - Ramanujan, Raju V.

AU - Dahotre, Narendra B.

AU - Banerjee, Rajarshi

PY - 2014/5/1

Y1 - 2014/5/1

N2 - Devitrification of Fe-Si-B melt-spun ribbons by laser annealing, instead of typical furnace-annealing, led to substantially refined α-Fe(Si) nanocrystals nucleating within the amorphous matrix with a large number density of nucleation sites. This microstructural refinement due to laser devitrification leads to substantially improved soft magnetic properties with a drastic, 25 times, reduction in the coercivity, while maintaining the saturation magnetization values comparable to the furnace-annealed condition, making laser-annealing a very attractive devitrification route for these soft magnetic alloys.

AB - Devitrification of Fe-Si-B melt-spun ribbons by laser annealing, instead of typical furnace-annealing, led to substantially refined α-Fe(Si) nanocrystals nucleating within the amorphous matrix with a large number density of nucleation sites. This microstructural refinement due to laser devitrification leads to substantially improved soft magnetic properties with a drastic, 25 times, reduction in the coercivity, while maintaining the saturation magnetization values comparable to the furnace-annealed condition, making laser-annealing a very attractive devitrification route for these soft magnetic alloys.

KW - Crystallization

KW - Laser processing

KW - Soft magnet

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DO - 10.1016/j.matlet.2014.02.002

M3 - Article

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SP - 155

EP - 158

JO - Materials Letters

JF - Materials Letters

ER -

Improved soft magnetic properties by laser de-vitrification of Fe-Si-B amorphous magnetic alloys

Abstract

ASJC Scopus Subject Areas

Keywords

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