A Study of Exchange-Coupling Effect on Nd2Fe14B / α-Fe Forming Core/Shell Shape

Chang Woo Kim; Young Hwan Kim; Don Keun Lee; In Chul Jeong; Hae Woong Kwon; Young Soo Kang

doi:10.4028/www.scientific.net/SSP.119.147

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Adsorption Characteristics of Nitrogen and Oxygen onto Ion-Exchanged X-Type Zeolite
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A Study of Exchange-Coupling Effect on Nd₂Fe₁₄B / α-Fe Forming Core/Shell Shape
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HomeSolid State PhenomenaSolid State Phenomena Vol. 119A Study of Exchange-Coupling Effect on Nd2Fe14B /...

A Study of Exchange-Coupling Effect on Nd₂Fe₁₄B / α-Fe Forming Core/Shell Shape

Abstract:

We report the core/shell type as the interesting one of the various techniques to prepare exchange-coupled permanent magnet. In this study, the exchange-coupled Nd2Fe14B/α-Fe was prepared by high energy ball mill process and chemical reduction. Nd15Fe77B8 powder prepared by high energy ball mill process was coated with α-Fe nanoparticle by chemical reduction. α-Fe nanoparticle on the ball milled Nd15Fe77B8 was synthesized by chemical reduction with borohydride as a reducing agent in aqueous solution. After annealing, Nd2Fe14B/α-Fe forming core/shell shape has exchange-coupling effect and was identified by using XRD, FE-SEM, VSM, TMA and EDX.

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Solid State Phenomena (Volume 119)

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147-150

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.119.147

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Online since:

January 2007

Authors:

Chang Woo Kim, Young Hwan Kim, Don Keun Lee, In Chul Jeong, Hae Woong Kwon, Young Soo Kang

Keywords:

Core-Shell, Exchange-Coupled, Nd₂Fe₁₄B/α-Fe

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