Fabrication and characterization of highly textured Nd-Fe-B thin film with a nanosized columnar grain structure

C. Y. You; Y. K. Takahashi; K. Hono

doi:10.1063/1.3474990

Fabrication and characterization of highly textured Nd-Fe-B thin film with a nanosized columnar grain structure

C. Y. You, Y. K. Takahashi, K. Hono

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

15 Citations (Scopus)

Abstract

We have fabricated a highly textured Nd-Fe-B thin film with a hard magnetic performance: M_r =_1.39 T, H_c =827 kA/m, and (BH) max =358 kJ/ m³. The microstructure of the film was characterized in detail by cross-sectional and plane-view transmission electron microscopy observations. The film consisted of nanosized columnar grains with an average size of 40 nm and included a strong diffraction contrast along the grain boundary. A high resolution energy filtered image indicated that Nd was enriched discontinuously along the grain boundary, causing an unsuitable decoupling among the Nd₂ Fe14 B grains, which is in agreement with the pinninglike feature of the initial magnetization curve.

Original language	English
Article number	043901
Journal	Journal of Applied Physics
Volume	108
Issue number	4
DOIs	https://doi.org/10.1063/1.3474990
Publication status	Published - 2010 Aug 15
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.3474990

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title = "Fabrication and characterization of highly textured Nd-Fe-B thin film with a nanosized columnar grain structure",

abstract = "We have fabricated a highly textured Nd-Fe-B thin film with a hard magnetic performance: Mr =1.39 T, Hc =827 kA/m, and (BH) max =358 kJ/ m3. The microstructure of the film was characterized in detail by cross-sectional and plane-view transmission electron microscopy observations. The film consisted of nanosized columnar grains with an average size of 40 nm and included a strong diffraction contrast along the grain boundary. A high resolution energy filtered image indicated that Nd was enriched discontinuously along the grain boundary, causing an unsuitable decoupling among the Nd2 Fe14 B grains, which is in agreement with the pinninglike feature of the initial magnetization curve.",

author = "You, {C. Y.} and Takahashi, {Y. K.} and K. Hono",

note = "Funding Information: This work was supported by Toyota Motor Co. Ltd. and the Rare Metal Substitute Materials Development Project on Development of technology for reducing dysprosium usage in a rare-earth magnet, METI, and the World Premier International Research Center Initiative (WPI Initiative) on Materials Nanoarchitronics, MEXT, Japan.",

year = "2010",

month = aug,

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doi = "10.1063/1.3474990",

language = "English",

volume = "108",

journal = "Journal of Applied Physics",

issn = "0021-8979",

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T1 - Fabrication and characterization of highly textured Nd-Fe-B thin film with a nanosized columnar grain structure

AU - You, C. Y.

AU - Takahashi, Y. K.

AU - Hono, K.

N1 - Funding Information: This work was supported by Toyota Motor Co. Ltd. and the Rare Metal Substitute Materials Development Project on Development of technology for reducing dysprosium usage in a rare-earth magnet, METI, and the World Premier International Research Center Initiative (WPI Initiative) on Materials Nanoarchitronics, MEXT, Japan.

PY - 2010/8/15

Y1 - 2010/8/15

N2 - We have fabricated a highly textured Nd-Fe-B thin film with a hard magnetic performance: Mr =1.39 T, Hc =827 kA/m, and (BH) max =358 kJ/ m3. The microstructure of the film was characterized in detail by cross-sectional and plane-view transmission electron microscopy observations. The film consisted of nanosized columnar grains with an average size of 40 nm and included a strong diffraction contrast along the grain boundary. A high resolution energy filtered image indicated that Nd was enriched discontinuously along the grain boundary, causing an unsuitable decoupling among the Nd2 Fe14 B grains, which is in agreement with the pinninglike feature of the initial magnetization curve.

AB - We have fabricated a highly textured Nd-Fe-B thin film with a hard magnetic performance: Mr =1.39 T, Hc =827 kA/m, and (BH) max =358 kJ/ m3. The microstructure of the film was characterized in detail by cross-sectional and plane-view transmission electron microscopy observations. The film consisted of nanosized columnar grains with an average size of 40 nm and included a strong diffraction contrast along the grain boundary. A high resolution energy filtered image indicated that Nd was enriched discontinuously along the grain boundary, causing an unsuitable decoupling among the Nd2 Fe14 B grains, which is in agreement with the pinninglike feature of the initial magnetization curve.

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Fabrication and characterization of highly textured Nd-Fe-B thin film with a nanosized columnar grain structure

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