Structure, ferromagnetic resonance, and permeability of nanogranular Fe-Co-B-Ni films

Massimo Pasquale; Federica Celegato; Marco Coisson; Alessandro Magni; Sergio Perero; Pavel Kabos; Valeria Teppati; Suk Hee Han; Jongryoul Kim; Sang Ho Lim

doi:10.1063/1.2165926

Structure, ferromagnetic resonance, and permeability of nanogranular Fe-Co-B-Ni films

Massimo Pasquale, Federica Celegato, Marco Coisson, Alessandro Magni, Sergio Perero, Pavel Kabos, Valeria Teppati, Suk Hee Han, Jongryoul Kim, Sang Ho Lim

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

10 Citations (Scopus)

Abstract

The static and microwave magnetic properties of soft nanogranular (Fe0.7 Co0.3) 71 B22 Ni films with a 2 T saturation magnetization are presented as functions of thickness, ranging from 136 to 235 nm. Microwave permeability values from 60 to 260 are measured and ferromagnetic resonance frequencies up to 6.8 GHz are found using a vector network analyzer, connected to coplanar/microstrip structures loaded with the ferromagnetic films. Topographic and magnetic structures down to 20-40 nm were observed by atomic/magnetic force microscopy. The combination of reasonable values of the permeability and high ferromagnetic resonance frequency makes these nanogranular materials useful in the development of inductive microwave components.

Original language	English
Article number	08M303
Journal	Journal of Applied Physics
Volume	99
Issue number	8
DOIs	https://doi.org/10.1063/1.2165926
Publication status	Published - 2006

Bibliographical note

Funding Information:
This work was partly supported by the Italy-Korea bilateral scientific cooperation program “Nanogranular magnetic films and devices for GHz frequency applications” funded by the Italian Ministry of Foreign Affairs and the Korean Ministry of Research.

ASJC Scopus subject areas

General Physics and Astronomy

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10.1063/1.2165926

Cite this

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abstract = "The static and microwave magnetic properties of soft nanogranular (Fe0.7 Co0.3) 71 B22 Ni films with a 2 T saturation magnetization are presented as functions of thickness, ranging from 136 to 235 nm. Microwave permeability values from 60 to 260 are measured and ferromagnetic resonance frequencies up to 6.8 GHz are found using a vector network analyzer, connected to coplanar/microstrip structures loaded with the ferromagnetic films. Topographic and magnetic structures down to 20-40 nm were observed by atomic/magnetic force microscopy. The combination of reasonable values of the permeability and high ferromagnetic resonance frequency makes these nanogranular materials useful in the development of inductive microwave components.",

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journal = "Journal of Applied Physics",

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T1 - Structure, ferromagnetic resonance, and permeability of nanogranular Fe-Co-B-Ni films

AU - Pasquale, Massimo

AU - Celegato, Federica

AU - Coisson, Marco

AU - Magni, Alessandro

AU - Perero, Sergio

AU - Kabos, Pavel

AU - Teppati, Valeria

AU - Han, Suk Hee

AU - Kim, Jongryoul

AU - Lim, Sang Ho

N1 - Funding Information: This work was partly supported by the Italy-Korea bilateral scientific cooperation program “Nanogranular magnetic films and devices for GHz frequency applications” funded by the Italian Ministry of Foreign Affairs and the Korean Ministry of Research.

PY - 2006

Y1 - 2006

N2 - The static and microwave magnetic properties of soft nanogranular (Fe0.7 Co0.3) 71 B22 Ni films with a 2 T saturation magnetization are presented as functions of thickness, ranging from 136 to 235 nm. Microwave permeability values from 60 to 260 are measured and ferromagnetic resonance frequencies up to 6.8 GHz are found using a vector network analyzer, connected to coplanar/microstrip structures loaded with the ferromagnetic films. Topographic and magnetic structures down to 20-40 nm were observed by atomic/magnetic force microscopy. The combination of reasonable values of the permeability and high ferromagnetic resonance frequency makes these nanogranular materials useful in the development of inductive microwave components.

AB - The static and microwave magnetic properties of soft nanogranular (Fe0.7 Co0.3) 71 B22 Ni films with a 2 T saturation magnetization are presented as functions of thickness, ranging from 136 to 235 nm. Microwave permeability values from 60 to 260 are measured and ferromagnetic resonance frequencies up to 6.8 GHz are found using a vector network analyzer, connected to coplanar/microstrip structures loaded with the ferromagnetic films. Topographic and magnetic structures down to 20-40 nm were observed by atomic/magnetic force microscopy. The combination of reasonable values of the permeability and high ferromagnetic resonance frequency makes these nanogranular materials useful in the development of inductive microwave components.

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Structure, ferromagnetic resonance, and permeability of nanogranular Fe-Co-B-Ni films

Abstract

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