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

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

19 Scopus citations

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
State	Published - May 1 2014
Externally published	Yes

Funding

The authors acknowledge Center for Research and Technology at the University of North Texas for microstructure characterization and authors SK and NBD for financial support from NSF ( CMMI 0969249 ).

Funders	Funder number
National Science Foundation	CMMI 0969249

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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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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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

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Keywords

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