Effects of N Addition on the soft Magnetic Properties of Fe-Hf-O Thin Films

A. Kojima; A. Makino

doi:10.1109/TJMJ.1992.4565525

Effects of N Addition on the soft Magnetic Properties of Fe-Hf-O Thin Films

A. Kojima, A. Makino

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

1 Citation (Scopus)

Abstract

The effects of N addition on the magnetic properties and structure of Fe-Hf-O sputtered films were investigated. The addition of N to Fe88~93Hf2~3O5~9 thin films was found to decrease the coercivity, both in the as-deposited state and after annealing at 773K to 873K, owing to the smaller α-Fe (bcc phase) crystal grains. In particular, Fc85.1Hf2.1O5.5N7.3 films composed of the bcc phase with fine (150 Å) grains, γ-Fe4N and hafnium oxide nitride, exhibited a low coercivity of 64 A/m and a high saturation magnetization, Bs, of about 1.7 T even after annealing at 873K. With its high Bs, low and good thermal stability, such film is expected to prove useful as a magnetic head material.

Original language	English
Pages (from-to)	891-895
Number of pages	5
Journal	IEEE Translation Journal on Magnetics in Japan
Volume	7
Issue number	11
DOIs	https://doi.org/10.1109/TJMJ.1992.4565525
Publication status	Published - 1992 Jan 1
Externally published	Yes

ASJC Scopus subject areas

Engineering (miscellaneous)

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title = "Effects of N Addition on the soft Magnetic Properties of Fe-Hf-O Thin Films",

abstract = "The effects of N addition on the magnetic properties and structure of Fe-Hf-O sputtered films were investigated. The addition of N to Fe88~93Hf2~3O5~9 thin films was found to decrease the coercivity, both in the as-deposited state and after annealing at 773K to 873K, owing to the smaller α-Fe (bcc phase) crystal grains. In particular, Fc85.1Hf2.1O5.5N7.3 films composed of the bcc phase with fine (150 {\AA}) grains, γ-Fe4N and hafnium oxide nitride, exhibited a low coercivity of 64 A/m and a high saturation magnetization, Bs, of about 1.7 T even after annealing at 873K. With its high Bs, low and good thermal stability, such film is expected to prove useful as a magnetic head material.",

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T1 - Effects of N Addition on the soft Magnetic Properties of Fe-Hf-O Thin Films

AU - Kojima, A.

AU - Makino, A.

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N2 - The effects of N addition on the magnetic properties and structure of Fe-Hf-O sputtered films were investigated. The addition of N to Fe88~93Hf2~3O5~9 thin films was found to decrease the coercivity, both in the as-deposited state and after annealing at 773K to 873K, owing to the smaller α-Fe (bcc phase) crystal grains. In particular, Fc85.1Hf2.1O5.5N7.3 films composed of the bcc phase with fine (150 Å) grains, γ-Fe4N and hafnium oxide nitride, exhibited a low coercivity of 64 A/m and a high saturation magnetization, Bs, of about 1.7 T even after annealing at 873K. With its high Bs, low and good thermal stability, such film is expected to prove useful as a magnetic head material.

AB - The effects of N addition on the magnetic properties and structure of Fe-Hf-O sputtered films were investigated. The addition of N to Fe88~93Hf2~3O5~9 thin films was found to decrease the coercivity, both in the as-deposited state and after annealing at 773K to 873K, owing to the smaller α-Fe (bcc phase) crystal grains. In particular, Fc85.1Hf2.1O5.5N7.3 films composed of the bcc phase with fine (150 Å) grains, γ-Fe4N and hafnium oxide nitride, exhibited a low coercivity of 64 A/m and a high saturation magnetization, Bs, of about 1.7 T even after annealing at 873K. With its high Bs, low and good thermal stability, such film is expected to prove useful as a magnetic head material.

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