Microstructures and Magnetic Properties of Sm-Fe-N Thick Films Produced by the Aerosol Deposition Method

Tomohito Maki; Satoshi Sugimoto; Toshio Kagotani; Koichiro Inomata; Jun Akedo

doi:10.2320/matertrans.45.369

Microstructures and Magnetic Properties of Sm-Fe-N Thick Films Produced by the Aerosol Deposition Method

Tomohito Maki, Satoshi Sugimoto, Toshio Kagotani, Koichiro Inomata, Jun Akedo

ENG - Materials Science

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

13 Citations (Scopus)

Abstract

This paper describes magnetic properties and microstructures of Sm-Fe-N thick films prepared by the aerosol deposition (AD) method. The maximum thickness (d) of 77μn was obtained in the AD conditions of gas flow rate (gfr) = 6 × 10^-3 m³/min for 4 min. From this result, the deposition rate was estimated as 19μm/min. The density (ρ) of Sm-Fe-N films were in the range of 4.9 × 10³-5.9 × 10³kg/m³, which were 64-77% of the X-ray density of the Sm₂Fe₁₇N₃ compound reported (7.67 × 10³ kg/m³). However, they were higher than the density of the green compact of Sm-Fe-N host powders (3.86 × 10³ kg/m ³). The Sm-Fe-N AD films showed the remanences (B_r) of 0.36-0.42 T, which were 58-68% of that of host powder (0.62 T). The coercivities (μ₀H_cj) increased from 1.16 T to 1.69-1.86 T after the deposition because the average grain size decreased from 1.94 to 0.32 μm. XRD analysis revealed that the ratio of peak intensity of (006) to (033) in the Sm-Fe-N AD films was higher than that in the host powder. In addition, the remanence measured in perpendicular to the film plane was higher than that in parallel after the compensation of demagnetizing field. Therefore, it is considered that the c-axis in Sm-Fe-N AD films has a tendency to align in perpendicular to the film plane.

Original language	English
Pages (from-to)	369-372
Number of pages	4
Journal	Materials Transactions
Volume	45
Issue number	2
DOIs	https://doi.org/10.2320/matertrans.45.369
Publication status	Published - 2004 Feb

Keywords

Aerosol deposition method
Coercivity
Grain size
Microstructure
Remanence
Samarium iron nitride
Thick film magnet

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.2320/matertrans.45.369

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@article{6a8228ec87df485a9d646e392e2b3fb8,

title = "Microstructures and Magnetic Properties of Sm-Fe-N Thick Films Produced by the Aerosol Deposition Method",

abstract = "This paper describes magnetic properties and microstructures of Sm-Fe-N thick films prepared by the aerosol deposition (AD) method. The maximum thickness (d) of 77μn was obtained in the AD conditions of gas flow rate (gfr) = 6 × 10-3 m3/min for 4 min. From this result, the deposition rate was estimated as 19μm/min. The density (ρ) of Sm-Fe-N films were in the range of 4.9 × 103-5.9 × 103kg/m3, which were 64-77% of the X-ray density of the Sm2Fe17N3 compound reported (7.67 × 103 kg/m3). However, they were higher than the density of the green compact of Sm-Fe-N host powders (3.86 × 103 kg/m 3). The Sm-Fe-N AD films showed the remanences (Br) of 0.36-0.42 T, which were 58-68% of that of host powder (0.62 T). The coercivities (μ0Hcj) increased from 1.16 T to 1.69-1.86 T after the deposition because the average grain size decreased from 1.94 to 0.32 μm. XRD analysis revealed that the ratio of peak intensity of (006) to (033) in the Sm-Fe-N AD films was higher than that in the host powder. In addition, the remanence measured in perpendicular to the film plane was higher than that in parallel after the compensation of demagnetizing field. Therefore, it is considered that the c-axis in Sm-Fe-N AD films has a tendency to align in perpendicular to the film plane.",

keywords = "Aerosol deposition method, Coercivity, Grain size, Microstructure, Remanence, Samarium iron nitride, Thick film magnet",

author = "Tomohito Maki and Satoshi Sugimoto and Toshio Kagotani and Koichiro Inomata and Jun Akedo",

year = "2004",

month = feb,

doi = "10.2320/matertrans.45.369",

language = "English",

volume = "45",

pages = "369--372",

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T1 - Microstructures and Magnetic Properties of Sm-Fe-N Thick Films Produced by the Aerosol Deposition Method

AU - Maki, Tomohito

AU - Sugimoto, Satoshi

AU - Kagotani, Toshio

AU - Inomata, Koichiro

AU - Akedo, Jun

PY - 2004/2

Y1 - 2004/2

N2 - This paper describes magnetic properties and microstructures of Sm-Fe-N thick films prepared by the aerosol deposition (AD) method. The maximum thickness (d) of 77μn was obtained in the AD conditions of gas flow rate (gfr) = 6 × 10-3 m3/min for 4 min. From this result, the deposition rate was estimated as 19μm/min. The density (ρ) of Sm-Fe-N films were in the range of 4.9 × 103-5.9 × 103kg/m3, which were 64-77% of the X-ray density of the Sm2Fe17N3 compound reported (7.67 × 103 kg/m3). However, they were higher than the density of the green compact of Sm-Fe-N host powders (3.86 × 103 kg/m 3). The Sm-Fe-N AD films showed the remanences (Br) of 0.36-0.42 T, which were 58-68% of that of host powder (0.62 T). The coercivities (μ0Hcj) increased from 1.16 T to 1.69-1.86 T after the deposition because the average grain size decreased from 1.94 to 0.32 μm. XRD analysis revealed that the ratio of peak intensity of (006) to (033) in the Sm-Fe-N AD films was higher than that in the host powder. In addition, the remanence measured in perpendicular to the film plane was higher than that in parallel after the compensation of demagnetizing field. Therefore, it is considered that the c-axis in Sm-Fe-N AD films has a tendency to align in perpendicular to the film plane.

AB - This paper describes magnetic properties and microstructures of Sm-Fe-N thick films prepared by the aerosol deposition (AD) method. The maximum thickness (d) of 77μn was obtained in the AD conditions of gas flow rate (gfr) = 6 × 10-3 m3/min for 4 min. From this result, the deposition rate was estimated as 19μm/min. The density (ρ) of Sm-Fe-N films were in the range of 4.9 × 103-5.9 × 103kg/m3, which were 64-77% of the X-ray density of the Sm2Fe17N3 compound reported (7.67 × 103 kg/m3). However, they were higher than the density of the green compact of Sm-Fe-N host powders (3.86 × 103 kg/m 3). The Sm-Fe-N AD films showed the remanences (Br) of 0.36-0.42 T, which were 58-68% of that of host powder (0.62 T). The coercivities (μ0Hcj) increased from 1.16 T to 1.69-1.86 T after the deposition because the average grain size decreased from 1.94 to 0.32 μm. XRD analysis revealed that the ratio of peak intensity of (006) to (033) in the Sm-Fe-N AD films was higher than that in the host powder. In addition, the remanence measured in perpendicular to the film plane was higher than that in parallel after the compensation of demagnetizing field. Therefore, it is considered that the c-axis in Sm-Fe-N AD films has a tendency to align in perpendicular to the film plane.

KW - Aerosol deposition method

KW - Coercivity

KW - Grain size

KW - Microstructure

KW - Remanence

KW - Samarium iron nitride

KW - Thick film magnet

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EP - 372

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JF - Materials Transactions

IS - 2

ER -

Microstructures and Magnetic Properties of Sm-Fe-N Thick Films Produced by the Aerosol Deposition Method

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