Microwave response of amorphous microwires: Magnetoimpedance and ferromagnetic resonance

M. Dominguez; J. M. Garcia-Beneytez; M. Vazquez; S. E. Lofland; S. M. Bhagat

doi:10.1016/S0304-8853(02)00517-6

Microwave response of amorphous microwires: Magnetoimpedance and ferromagnetic resonance

M. Dominguez, J. M. Garcia-Beneytez, M. Vazquez, S. E. Lofland, S. M. Bhagat

Physics

Research output: Contribution to journal › Conference article › peer-review

20 Scopus citations

Abstract

It has been established that giant magnetoimpedance (GMI) in amorphous wires is due to a rapid change in the skin depth, caused by the low-field sensitivity of the azimuthal dynamic permeability (a classical electromagnetic effect). In 5μm diameter glass-covered amorphous wires, GMI may be observed at the microwave range. A correlation between GMI and ferromagnetic resonance (FMR) was proposed in this microwave range. We have measured the microwave response of amorphous microwires for several alloys from the system (Co_100-xFe_x)₇₅Si₁₅B₁₀ (x = 2, 6, 10) with positive, zero, and negative magnetostriction, respectively. Our main results indicate: (i) GMI and FMR effects are well separated at different fields, (ii) GMI follows the magnetization process, confirming its classical electromagnetic origin, and (iii) FMR fields are also affected by the skin effect.

Original language	English (US)
Pages (from-to)	117-121
Number of pages	5
Journal	Journal of Magnetism and Magnetic Materials
Volume	249
Issue number	1-2
DOIs	https://doi.org/10.1016/S0304-8853(02)00517-6
State	Published - Aug 2002
Event	International Workshop on Magnetic Wires - San Sebastian, Spain Duration: Jun 20 2001 → Jun 22 2001

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/S0304-8853(02)00517-6

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title = "Microwave response of amorphous microwires: Magnetoimpedance and ferromagnetic resonance",

abstract = "It has been established that giant magnetoimpedance (GMI) in amorphous wires is due to a rapid change in the skin depth, caused by the low-field sensitivity of the azimuthal dynamic permeability (a classical electromagnetic effect). In 5μm diameter glass-covered amorphous wires, GMI may be observed at the microwave range. A correlation between GMI and ferromagnetic resonance (FMR) was proposed in this microwave range. We have measured the microwave response of amorphous microwires for several alloys from the system (Co100-xFex)75Si15B10 (x = 2, 6, 10) with positive, zero, and negative magnetostriction, respectively. Our main results indicate: (i) GMI and FMR effects are well separated at different fields, (ii) GMI follows the magnetization process, confirming its classical electromagnetic origin, and (iii) FMR fields are also affected by the skin effect.",

author = "M. Dominguez and Garcia-Beneytez, {J. M.} and M. Vazquez and Lofland, {S. E.} and Bhagat, {S. M.}",

year = "2002",

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doi = "10.1016/S0304-8853(02)00517-6",

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volume = "249",

pages = "117--121",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

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number = "1-2",

note = "International Workshop on Magnetic Wires ; Conference date: 20-06-2001 Through 22-06-2001",

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TY - JOUR

T1 - Microwave response of amorphous microwires

T2 - International Workshop on Magnetic Wires

AU - Dominguez, M.

AU - Garcia-Beneytez, J. M.

AU - Vazquez, M.

AU - Lofland, S. E.

AU - Bhagat, S. M.

PY - 2002/8

Y1 - 2002/8

N2 - It has been established that giant magnetoimpedance (GMI) in amorphous wires is due to a rapid change in the skin depth, caused by the low-field sensitivity of the azimuthal dynamic permeability (a classical electromagnetic effect). In 5μm diameter glass-covered amorphous wires, GMI may be observed at the microwave range. A correlation between GMI and ferromagnetic resonance (FMR) was proposed in this microwave range. We have measured the microwave response of amorphous microwires for several alloys from the system (Co100-xFex)75Si15B10 (x = 2, 6, 10) with positive, zero, and negative magnetostriction, respectively. Our main results indicate: (i) GMI and FMR effects are well separated at different fields, (ii) GMI follows the magnetization process, confirming its classical electromagnetic origin, and (iii) FMR fields are also affected by the skin effect.

AB - It has been established that giant magnetoimpedance (GMI) in amorphous wires is due to a rapid change in the skin depth, caused by the low-field sensitivity of the azimuthal dynamic permeability (a classical electromagnetic effect). In 5μm diameter glass-covered amorphous wires, GMI may be observed at the microwave range. A correlation between GMI and ferromagnetic resonance (FMR) was proposed in this microwave range. We have measured the microwave response of amorphous microwires for several alloys from the system (Co100-xFex)75Si15B10 (x = 2, 6, 10) with positive, zero, and negative magnetostriction, respectively. Our main results indicate: (i) GMI and FMR effects are well separated at different fields, (ii) GMI follows the magnetization process, confirming its classical electromagnetic origin, and (iii) FMR fields are also affected by the skin effect.

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DO - 10.1016/S0304-8853(02)00517-6

M3 - Conference article

AN - SCOPUS:0036701307

SN - 0304-8853

VL - 249

SP - 117

EP - 121

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1-2

Y2 - 20 June 2001 through 22 June 2001

ER -

Microwave response of amorphous microwires: Magnetoimpedance and ferromagnetic resonance

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