Effects of boron contents on magnetic properties of Fe-Co-B thin films

Inyoung Kim; Jongryoul Kim; Ki Hyeon Kim; Masahiro Yamaguchi

doi:10.1109/TMAG.2004.832129

Effects of boron contents on magnetic properties of Fe-Co-B thin films

Inyoung Kim, Jongryoul Kim, Ki Hyeon Kim, Masahiro Yamaguchi

ENG - Electrical Engineering

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

56 Citations (Scopus)

Abstract

Effects of B on the magnetic properties and high frequency characteristics of the Fe₇Co₃ based thin films were investigated through the microstructural analysis. It was found that B addition was very effective in increasing anisotropy field and resistivity and in decreasing coercivity without much loss of saturation magnetization. These enhancements were shown to be strongly related to grain size, grain morphology and preferred orientations. As a result, a Fe₅₅Co₂₈B₁₇ film with small dispersion angle of ∼ 0.5° showed the ferromagnetic resonance frequency of 3.3 GHz and a linear effective permeability of ∼350 up to 2 GHz.

Original language	English
Pages (from-to)	2706-2708
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	40
Issue number	4 II
DOIs	https://doi.org/10.1109/TMAG.2004.832129
Publication status	Published - 2004 Jul

Keywords

Fe-Co-B thin film
Ferromagnetic resonance
High frequency
Soft magnetic property
Texture

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1109/TMAG.2004.832129

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title = "Effects of boron contents on magnetic properties of Fe-Co-B thin films",

abstract = "Effects of B on the magnetic properties and high frequency characteristics of the Fe7Co3 based thin films were investigated through the microstructural analysis. It was found that B addition was very effective in increasing anisotropy field and resistivity and in decreasing coercivity without much loss of saturation magnetization. These enhancements were shown to be strongly related to grain size, grain morphology and preferred orientations. As a result, a Fe55Co28B17 film with small dispersion angle of ∼ 0.5° showed the ferromagnetic resonance frequency of 3.3 GHz and a linear effective permeability of ∼350 up to 2 GHz.",

keywords = "Fe-Co-B thin film, Ferromagnetic resonance, High frequency, Soft magnetic property, Texture",

author = "Inyoung Kim and Jongryoul Kim and Kim, {Ki Hyeon} and Masahiro Yamaguchi",

note = "Funding Information: Manuscript received October 15, 2003. This work was supported in part by the KOSEF-Japan Basic Scientific Promotion Program. I. Kim and J. Kim are with Metallurgy and Materials Engineering Department, Hanyang University, Kyunggi-do, 425-791, Korea (e-mail: temkim@ihanyang.ac.kr; jina@hanyang.ac.kr). K. H. Kim and M. Yamaguchi are with Electrical and Communication Engineering Department, Tohoku University, Sendai, Japan (e-mail: kee@ecei.to-hoku.ac.jp; yamaguti@ecei.tohoku.ac.jp). Digital Object Identifier 10.1109/TMAG.2004.832129 Fig. 1. Changes of 4 Ms and resistivity with the variation of B contents in (Fe Co ) B films.",

year = "2004",

month = jul,

doi = "10.1109/TMAG.2004.832129",

language = "English",

volume = "40",

pages = "2706--2708",

journal = "IEEE Transactions on Magnetics",

issn = "0018-9464",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "4 II",

}

TY - JOUR

T1 - Effects of boron contents on magnetic properties of Fe-Co-B thin films

AU - Kim, Inyoung

AU - Kim, Jongryoul

AU - Kim, Ki Hyeon

AU - Yamaguchi, Masahiro

N1 - Funding Information: Manuscript received October 15, 2003. This work was supported in part by the KOSEF-Japan Basic Scientific Promotion Program. I. Kim and J. Kim are with Metallurgy and Materials Engineering Department, Hanyang University, Kyunggi-do, 425-791, Korea (e-mail: temkim@ihanyang.ac.kr; jina@hanyang.ac.kr). K. H. Kim and M. Yamaguchi are with Electrical and Communication Engineering Department, Tohoku University, Sendai, Japan (e-mail: kee@ecei.to-hoku.ac.jp; yamaguti@ecei.tohoku.ac.jp). Digital Object Identifier 10.1109/TMAG.2004.832129 Fig. 1. Changes of 4 Ms and resistivity with the variation of B contents in (Fe Co ) B films.

PY - 2004/7

Y1 - 2004/7

N2 - Effects of B on the magnetic properties and high frequency characteristics of the Fe7Co3 based thin films were investigated through the microstructural analysis. It was found that B addition was very effective in increasing anisotropy field and resistivity and in decreasing coercivity without much loss of saturation magnetization. These enhancements were shown to be strongly related to grain size, grain morphology and preferred orientations. As a result, a Fe55Co28B17 film with small dispersion angle of ∼ 0.5° showed the ferromagnetic resonance frequency of 3.3 GHz and a linear effective permeability of ∼350 up to 2 GHz.

AB - Effects of B on the magnetic properties and high frequency characteristics of the Fe7Co3 based thin films were investigated through the microstructural analysis. It was found that B addition was very effective in increasing anisotropy field and resistivity and in decreasing coercivity without much loss of saturation magnetization. These enhancements were shown to be strongly related to grain size, grain morphology and preferred orientations. As a result, a Fe55Co28B17 film with small dispersion angle of ∼ 0.5° showed the ferromagnetic resonance frequency of 3.3 GHz and a linear effective permeability of ∼350 up to 2 GHz.

KW - Fe-Co-B thin film

KW - Ferromagnetic resonance

KW - High frequency

KW - Soft magnetic property

KW - Texture

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JO - IEEE Transactions on Magnetics

JF - IEEE Transactions on Magnetics

SN - 0018-9464

IS - 4 II

ER -

Effects of boron contents on magnetic properties of Fe-Co-B thin films

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Keywords

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