Magnetomechanical properties of nanogranular Co-Fe-Al-O films

M. Pasquale; C. P. Sasso; A. Magni; F. Celegato; J. C. Sohn; S. H. Lim

doi:10.1063/1.1859213

Magnetomechanical properties of nanogranular Co-Fe-Al-O films

M. Pasquale, C. P. Sasso, A. Magni, F. Celegato, J. C. Sohn, S. H. Lim

Department of Materials Science and Engineering

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

6 Citations (Scopus)

Abstract

Using different experimental techniques we analyze the interplay between the structure and the magnetomechanical behavior of soft nanogranular CoFeAlO films with thickness ranging from 125 to 550 nm. The sputtered film is characterized by 40-nm FeCo grains and a saturation magnetization of 16 kG. The results show that, due to the role of the mechanically stiff and insulating Al-O matrix, an increase of the resistivity leads to an increase of the anisotropy field and also of the ferromagnetic resonance frequency. The 125-nm -thick films possess the best combination of anisotropy field and resistivity leading to an estimated ferromagnetic resonance frequency around 1.9 GHz.

Original language	English
Article number	10N306
Journal	Journal of Applied Physics
Volume	97
Issue number	10
DOIs	https://doi.org/10.1063/1.1859213
Publication status	Published - 2005 May 15

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Magnetomechanical properties of nanogranular Co-Fe-Al-O films",

abstract = "Using different experimental techniques we analyze the interplay between the structure and the magnetomechanical behavior of soft nanogranular CoFeAlO films with thickness ranging from 125 to 550 nm. The sputtered film is characterized by 40-nm FeCo grains and a saturation magnetization of 16 kG. The results show that, due to the role of the mechanically stiff and insulating Al-O matrix, an increase of the resistivity leads to an increase of the anisotropy field and also of the ferromagnetic resonance frequency. The 125-nm -thick films possess the best combination of anisotropy field and resistivity leading to an estimated ferromagnetic resonance frequency around 1.9 GHz.",

author = "M. Pasquale and Sasso, {C. P.} and A. Magni and F. Celegato and Sohn, {J. C.} and Lim, {S. H.}",

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AU - Pasquale, M.

AU - Sasso, C. P.

AU - Magni, A.

AU - Celegato, F.

AU - Sohn, J. C.

AU - Lim, S. H.

N1 - Funding Information: This work was partly supported by the Italy-Korea bilateral scientific cooperation program funded by the Italian foreign affairs ministry and the Korean ministry of research.

PY - 2005/5/15

Y1 - 2005/5/15

N2 - Using different experimental techniques we analyze the interplay between the structure and the magnetomechanical behavior of soft nanogranular CoFeAlO films with thickness ranging from 125 to 550 nm. The sputtered film is characterized by 40-nm FeCo grains and a saturation magnetization of 16 kG. The results show that, due to the role of the mechanically stiff and insulating Al-O matrix, an increase of the resistivity leads to an increase of the anisotropy field and also of the ferromagnetic resonance frequency. The 125-nm -thick films possess the best combination of anisotropy field and resistivity leading to an estimated ferromagnetic resonance frequency around 1.9 GHz.

AB - Using different experimental techniques we analyze the interplay between the structure and the magnetomechanical behavior of soft nanogranular CoFeAlO films with thickness ranging from 125 to 550 nm. The sputtered film is characterized by 40-nm FeCo grains and a saturation magnetization of 16 kG. The results show that, due to the role of the mechanically stiff and insulating Al-O matrix, an increase of the resistivity leads to an increase of the anisotropy field and also of the ferromagnetic resonance frequency. The 125-nm -thick films possess the best combination of anisotropy field and resistivity leading to an estimated ferromagnetic resonance frequency around 1.9 GHz.

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Magnetomechanical properties of nanogranular Co-Fe-Al-O films

Abstract

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