Effects of DyHx and Dy2O3 powder addition on magnetic and microstructural properties of Nd-Fe-B sintered magnets

Kyoung Hoon Bae; Tae Hoon Kim; Seong Rae Lee; Seok Namkung; Tae Suk Jang

doi:10.1063/1.4764320

Effects of DyH_x and Dy₂O₃ powder addition on magnetic and microstructural properties of Nd-Fe-B sintered magnets

Kyoung Hoon Bae, Tae Hoon Kim, Seong Rae Lee, Seok Namkung, Tae Suk Jang

Department of Materials Science and Engineering

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

32 Citations (Scopus)

Abstract

The magnetic and microstructural properties of (Nd_27.68Dy _4.89)-Fe_bal.B_1.0M_2.4 (wt. , M Cu, Al, Co, and Nb) sintered magnets doped with Dy₂O₃ and DyH_x powders were studied. The coercivity of the DyH _x-doped magnet improved, with no change in the remanence. Well-developed core-shell microstructures were seen in the DyH_x-doped magnet, as compared to the case of the Dy₂O₃-doped magnet. Diffusion of Dy was enhanced in the DyH_x-doped magnet, probably because dissolution of hydrogen in Nd₂Fe₁₄B increased the lattice parameter. The (00L) grain alignment in the DyH _x-doped magnet was also improved.

Original language	English
Article number	093912
Journal	Journal of Applied Physics
Volume	112
Issue number	9
DOIs	https://doi.org/10.1063/1.4764320
Publication status	Published - 2012 Nov 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Effects of DyHx and Dy2O3 powder addition on magnetic and microstructural properties of Nd-Fe-B sintered magnets",

abstract = "The magnetic and microstructural properties of (Nd27.68Dy 4.89)-Febal.B1.0M2.4 (wt. , M Cu, Al, Co, and Nb) sintered magnets doped with Dy2O3 and DyHx powders were studied. The coercivity of the DyH x-doped magnet improved, with no change in the remanence. Well-developed core-shell microstructures were seen in the DyHx-doped magnet, as compared to the case of the Dy2O3-doped magnet. Diffusion of Dy was enhanced in the DyHx-doped magnet, probably because dissolution of hydrogen in Nd2Fe14B increased the lattice parameter. The (00L) grain alignment in the DyH x-doped magnet was also improved.",

author = "Bae, {Kyoung Hoon} and Kim, {Tae Hoon} and Lee, {Seong Rae} and Seok Namkung and Jang, {Tae Suk}",

note = "Funding Information: This research was supported by a Grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Commerce, Industry and Energy and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2012-0007200), Republic of Korea.",

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AU - Bae, Kyoung Hoon

AU - Kim, Tae Hoon

AU - Lee, Seong Rae

AU - Namkung, Seok

AU - Jang, Tae Suk

N1 - Funding Information: This research was supported by a Grant from the Fundamental R&D Program for Core Technology of Materials funded by the Ministry of Commerce, Industry and Energy and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (2012-0007200), Republic of Korea.

PY - 2012/11/1

Y1 - 2012/11/1

N2 - The magnetic and microstructural properties of (Nd27.68Dy 4.89)-Febal.B1.0M2.4 (wt. , M Cu, Al, Co, and Nb) sintered magnets doped with Dy2O3 and DyHx powders were studied. The coercivity of the DyH x-doped magnet improved, with no change in the remanence. Well-developed core-shell microstructures were seen in the DyHx-doped magnet, as compared to the case of the Dy2O3-doped magnet. Diffusion of Dy was enhanced in the DyHx-doped magnet, probably because dissolution of hydrogen in Nd2Fe14B increased the lattice parameter. The (00L) grain alignment in the DyH x-doped magnet was also improved.

AB - The magnetic and microstructural properties of (Nd27.68Dy 4.89)-Febal.B1.0M2.4 (wt. , M Cu, Al, Co, and Nb) sintered magnets doped with Dy2O3 and DyHx powders were studied. The coercivity of the DyH x-doped magnet improved, with no change in the remanence. Well-developed core-shell microstructures were seen in the DyHx-doped magnet, as compared to the case of the Dy2O3-doped magnet. Diffusion of Dy was enhanced in the DyHx-doped magnet, probably because dissolution of hydrogen in Nd2Fe14B increased the lattice parameter. The (00L) grain alignment in the DyH x-doped magnet was also improved.

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Effects of DyH_x and Dy₂O₃ powder addition on magnetic and microstructural properties of Nd-Fe-B sintered magnets

Abstract

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