Magnetic softness of permalloy granular films produced by co-evaporation

T. Itoh; Y. Shimada; S. Yoshida; S. Okamoto; O. Kitakami; D. Shindo; Y. Murakami; J. H. Yoo

doi:10.1109/TMAG.2005.854900

Magnetic softness of permalloy granular films produced by co-evaporation

T. Itoh, Y. Shimada, S. Yoshida, S. Okamoto, O. Kitakami, D. Shindo, Y. Murakami, J. H. Yoo

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

Abstract

Permalloy granular films were fabricated by co-evaporation. In this paper, MgF₂ and CaF₂ are used as matrices. The films exhibit good magnetic softness and perpendicular or inplane uniaxial anisotropy that determines high frequency characteristics. The anisotropy is considered to originate from alignment of nanosized granules connected with exchange interaction. Magnetization curves, susceptibility and transmission electron microscopic images support speculation of microscopic granular structure and origin of anisotropy. Very high deposition speed is possible without serious deterioration of magnetic softness. High controllability of anisotropy and high speed deposition are advantageous from the industrial standpoint.

Original language	English
Pages (from-to)	3274-3276
Number of pages	3
Journal	IEEE Transactions on Magnetics
Volume	41
Issue number	10
DOIs	https://doi.org/10.1109/TMAG.2005.854900
Publication status	Published - Oct 1 2005
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

10.1109/TMAG.2005.854900

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abstract = "Permalloy granular films were fabricated by co-evaporation. In this paper, MgF2 and CaF2 are used as matrices. The films exhibit good magnetic softness and perpendicular or inplane uniaxial anisotropy that determines high frequency characteristics. The anisotropy is considered to originate from alignment of nanosized granules connected with exchange interaction. Magnetization curves, susceptibility and transmission electron microscopic images support speculation of microscopic granular structure and origin of anisotropy. Very high deposition speed is possible without serious deterioration of magnetic softness. High controllability of anisotropy and high speed deposition are advantageous from the industrial standpoint.",

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AU - Itoh, T.

AU - Shimada, Y.

AU - Yoshida, S.

AU - Okamoto, S.

AU - Kitakami, O.

AU - Shindo, D.

AU - Murakami, Y.

AU - Yoo, J. H.

PY - 2005/10/1

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AB - Permalloy granular films were fabricated by co-evaporation. In this paper, MgF2 and CaF2 are used as matrices. The films exhibit good magnetic softness and perpendicular or inplane uniaxial anisotropy that determines high frequency characteristics. The anisotropy is considered to originate from alignment of nanosized granules connected with exchange interaction. Magnetization curves, susceptibility and transmission electron microscopic images support speculation of microscopic granular structure and origin of anisotropy. Very high deposition speed is possible without serious deterioration of magnetic softness. High controllability of anisotropy and high speed deposition are advantageous from the industrial standpoint.

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