Magnetic Nanowires for RF applications: Ferromagnetic Resonance and Permeability Characterization

Yali Zhang; Joseph Um; Wen Zhou; Bethanie Stadler; Rhonda Franklin

doi:10.1109/mwsym.2019.8700826

Magnetic Nanowires for RF applications: Ferromagnetic Resonance and Permeability Characterization

Yali Zhang, Joseph Um, Wen Zhou, Bethanie Stadler, Rhonda Franklin

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Scopus citations

Abstract

Magnetic nanowires show promising potential in non-reciprocal device design and emerging areas like cells labeling in nano-medicine applications. One challenge, however, is how to obtain ferromagnetic resonance frequency (FMR) and complex permeability in a simplistic manner. In this study, a through line and short-circuited CPW circuits were used to obtain FMR in DC magnetic field and frequency domains, respectively. Factors were investigated to understand how magnetic field absorption is affected by sample placement on the circuit, how FMR is impacted by the angle between wire axis and DC field, and how complex permeability can be extracted from the reflection data. Using the four steps method which was commonly used for thin films [1]-[3], we obtain FMR of 27 GHz at 0.4T and complex permeability values of μ′ =7 and μ″ = 4.5, respectively for cobalt nanowires (pH=2).

Original language	English (US)
Title of host publication	2019 IEEE MTT-S International Microwave Symposium, IMS 2019
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1100-1103
Number of pages	4
ISBN (Electronic)	9781728113098
DOIs	https://doi.org/10.1109/mwsym.2019.8700826
State	Published - Jun 2019
Event	2019 IEEE MTT-S International Microwave Symposium, IMS 2019 - Boston, United States Duration: Jun 2 2019 → Jun 7 2019

Publication series

Name	IEEE MTT-S International Microwave Symposium Digest
Volume	2019-June
ISSN (Print)	0149-645X

Conference

Conference	2019 IEEE MTT-S International Microwave Symposium, IMS 2019
Country/Territory	United States
City	Boston
Period	6/2/19 → 6/7/19

Bibliographical note

Funding Information:
Portions of this work were conducted in the Minnesota Nano Center, which is supported by the National Science Foundation through the National Nano Coordinated Infrastructure Network, Award Number NNCI -1542202.

Funding Information:
ACKNOWLEDGMENT This work was supported by the National Science Foundation Award ECCS #1509543, MN Futures of the University of Minnesota, the Skippy Frank Fund for Life Sciences and Translational Research, and Animal Cancer Care and Research Program of the University of Minnesota.

Publisher Copyright:
© 2019 IEEE.

Keywords

Magnetic nanowires
coplanar waveguide
ferromagnetic resonance
vector network analyzer

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10.1109/mwsym.2019.8700826

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Zhang, Y., Um, J., Zhou, W., Stadler, B., & Franklin, R. (2019). Magnetic Nanowires for RF applications: Ferromagnetic Resonance and Permeability Characterization. In 2019 IEEE MTT-S International Microwave Symposium, IMS 2019 (pp. 1100-1103). Article 8700826 (IEEE MTT-S International Microwave Symposium Digest; Vol. 2019-June). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/mwsym.2019.8700826

Magnetic Nanowires for RF applications: Ferromagnetic Resonance and Permeability Characterization. / Zhang, Yali; Um, Joseph; Zhou, Wen et al.
2019 IEEE MTT-S International Microwave Symposium, IMS 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 1100-1103 8700826 (IEEE MTT-S International Microwave Symposium Digest; Vol. 2019-June).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zhang, Y, Um, J, Zhou, W, Stadler, B & Franklin, R 2019, Magnetic Nanowires for RF applications: Ferromagnetic Resonance and Permeability Characterization. in 2019 IEEE MTT-S International Microwave Symposium, IMS 2019., 8700826, IEEE MTT-S International Microwave Symposium Digest, vol. 2019-June, Institute of Electrical and Electronics Engineers Inc., pp. 1100-1103, 2019 IEEE MTT-S International Microwave Symposium, IMS 2019, Boston, United States, 6/2/19. https://doi.org/10.1109/mwsym.2019.8700826

Zhang Y, Um J, Zhou W, Stadler B , Franklin R. Magnetic Nanowires for RF applications: Ferromagnetic Resonance and Permeability Characterization. In 2019 IEEE MTT-S International Microwave Symposium, IMS 2019. Institute of Electrical and Electronics Engineers Inc. 2019. p. 1100-1103. 8700826. (IEEE MTT-S International Microwave Symposium Digest). doi: 10.1109/mwsym.2019.8700826

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abstract = "Magnetic nanowires show promising potential in non-reciprocal device design and emerging areas like cells labeling in nano-medicine applications. One challenge, however, is how to obtain ferromagnetic resonance frequency (FMR) and complex permeability in a simplistic manner. In this study, a through line and short-circuited CPW circuits were used to obtain FMR in DC magnetic field and frequency domains, respectively. Factors were investigated to understand how magnetic field absorption is affected by sample placement on the circuit, how FMR is impacted by the angle between wire axis and DC field, and how complex permeability can be extracted from the reflection data. Using the four steps method which was commonly used for thin films [1]-[3], we obtain FMR of 27 GHz at 0.4T and complex permeability values of μ′ =7 and μ″ = 4.5, respectively for cobalt nanowires (pH=2).",

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Magnetic Nanowires for RF applications: Ferromagnetic Resonance and Permeability Characterization

Abstract

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Bibliographical note

Keywords

Access

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