Effects of Co addition on microstructure and magnetic properties of ferromagnetic CoFeSiB alloy films

B. S. Chun; S. D. Kim; Y. S. Kim; J. Y. Hwang; S. S. Kim; J. R. Rhee; T. W. Kim; J. P. Hong; M. H. Jung; Y. K. Kim

doi:10.1016/j.actamat.2010.01.006

Effects of Co addition on microstructure and magnetic properties of ferromagnetic CoFeSiB alloy films

B. S. Chun, S. D. Kim, Y. S. Kim, J. Y. Hwang, S. S. Kim, J. R. Rhee, T. W. Kim, J. P. Hong, M. H. Jung, Y. K. Kim

Department of Materials Science and Engineering

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

17 Citations (Scopus)

Abstract

A correlation between composition, microstructure, and magnetic properties of sputter-deposited CoFeSiB alloy films has been studied. Various analytical tools and micromagnetic models were employed to understand the details of microstructural evolution and magnetic reversal processes, respectively. The CoFeSiB alloy film shows significantly different microstructure and magnetic properties depend on the Co concentration. When the Co concentration is below 75 at.%, the alloy has an amorphous phase exhibiting magnetic softness with negative remanence. Meanwhile, beyond 75 at.%, the structure consists of nanocrystals precipitated in the amorphous matrix, which becomes magnetically hard with positive remanence as well as antiferromagnetic exchange coupling.

Original language	English
Pages (from-to)	2836-2842
Number of pages	7
Journal	Acta Materialia
Volume	58
Issue number	8
DOIs	https://doi.org/10.1016/j.actamat.2010.01.006
Publication status	Published - 2010 May

Keywords

Amorphous materials
Crystal structure
Magnetic properties
Magnetic thin films

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

Access to Document

10.1016/j.actamat.2010.01.006

Cite this

@article{7d37f75e815a40a79f4e00832587f4ae,

title = "Effects of Co addition on microstructure and magnetic properties of ferromagnetic CoFeSiB alloy films",

abstract = "A correlation between composition, microstructure, and magnetic properties of sputter-deposited CoFeSiB alloy films has been studied. Various analytical tools and micromagnetic models were employed to understand the details of microstructural evolution and magnetic reversal processes, respectively. The CoFeSiB alloy film shows significantly different microstructure and magnetic properties depend on the Co concentration. When the Co concentration is below 75 at.%, the alloy has an amorphous phase exhibiting magnetic softness with negative remanence. Meanwhile, beyond 75 at.%, the structure consists of nanocrystals precipitated in the amorphous matrix, which becomes magnetically hard with positive remanence as well as antiferromagnetic exchange coupling.",

keywords = "Amorphous materials, Crystal structure, Magnetic properties, Magnetic thin films",

author = "Chun, {B. S.} and Kim, {S. D.} and Kim, {Y. S.} and Hwang, {J. Y.} and Kim, {S. S.} and Rhee, {J. R.} and Kim, {T. W.} and Hong, {J. P.} and Jung, {M. H.} and Kim, {Y. K.}",

year = "2010",

month = may,

doi = "10.1016/j.actamat.2010.01.006",

language = "English",

volume = "58",

pages = "2836--2842",

journal = "Acta Materialia",

issn = "1359-6454",

publisher = "Elsevier Limited",

number = "8",

}

TY - JOUR

T1 - Effects of Co addition on microstructure and magnetic properties of ferromagnetic CoFeSiB alloy films

AU - Chun, B. S.

AU - Kim, S. D.

AU - Kim, Y. S.

AU - Hwang, J. Y.

AU - Kim, S. S.

AU - Rhee, J. R.

AU - Kim, T. W.

AU - Hong, J. P.

AU - Jung, M. H.

AU - Kim, Y. K.

PY - 2010/5

Y1 - 2010/5

N2 - A correlation between composition, microstructure, and magnetic properties of sputter-deposited CoFeSiB alloy films has been studied. Various analytical tools and micromagnetic models were employed to understand the details of microstructural evolution and magnetic reversal processes, respectively. The CoFeSiB alloy film shows significantly different microstructure and magnetic properties depend on the Co concentration. When the Co concentration is below 75 at.%, the alloy has an amorphous phase exhibiting magnetic softness with negative remanence. Meanwhile, beyond 75 at.%, the structure consists of nanocrystals precipitated in the amorphous matrix, which becomes magnetically hard with positive remanence as well as antiferromagnetic exchange coupling.

AB - A correlation between composition, microstructure, and magnetic properties of sputter-deposited CoFeSiB alloy films has been studied. Various analytical tools and micromagnetic models were employed to understand the details of microstructural evolution and magnetic reversal processes, respectively. The CoFeSiB alloy film shows significantly different microstructure and magnetic properties depend on the Co concentration. When the Co concentration is below 75 at.%, the alloy has an amorphous phase exhibiting magnetic softness with negative remanence. Meanwhile, beyond 75 at.%, the structure consists of nanocrystals precipitated in the amorphous matrix, which becomes magnetically hard with positive remanence as well as antiferromagnetic exchange coupling.

KW - Amorphous materials

KW - Crystal structure

KW - Magnetic properties

KW - Magnetic thin films

UR - http://www.scopus.com/inward/record.url?scp=77949540283&partnerID=8YFLogxK

U2 - 10.1016/j.actamat.2010.01.006

DO - 10.1016/j.actamat.2010.01.006

M3 - Article

AN - SCOPUS:77949540283

SN - 1359-6454

VL - 58

SP - 2836

EP - 2842

JO - Acta Materialia

JF - Acta Materialia

IS - 8

ER -

Effects of Co addition on microstructure and magnetic properties of ferromagnetic CoFeSiB alloy films

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this