Controllable Nd2Fe14B/α-Fe nanocomposites: chemical synthesis and magnetic properties

Lianqing Yu; Ce Yang; Yanglong Hou

doi:10.1039/C4NR02163K

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Controllable Nd₂Fe₁₄B/α-Fe nanocomposites: chemical synthesis and magnetic properties†

Lianqing Yu,^ab Ce Yang^a and Yanglong Hou*^a

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* Corresponding authors

^a Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
E-mail: hou@pku.edu.cn

^b College of Science, China University of Petroleum, Qingdao 266580, China

Abstract

It is extremely desirable but challenging to develop exchange-coupled magnets with well-dispersed hard/soft phase and confined size to meet the high energy requirements of advanced magnets in modern industry and information technology. Here, we report a novel bottom-up strategy with two-step thermal decomposition and reductive annealing process to synthesize Nd₂Fe₁₄B/α-Fe nanocomposites, in which effective control of the hard/soft magnetic phase size and proportion was achieved. It is worth noting that the composition, as well as phase distribution, can be readily tuned by changing the ratio between Nd-Fe-B-oxide and α-Fe. This work provides an effective approach to adjust the phase size and distribution for exchange-coupled, rare-earth nanomagnets, which can be fundamental for high energy magnets.

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Article information

DOI: https://doi.org/10.1039/C4NR02163K
Article type: Paper
Submitted: 21 Apr 2014
Accepted: 08 Jul 2014
First published: 04 Aug 2014

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Nanoscale, 2014,6, 10638-10642

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Controllable Nd₂Fe₁₄B/α-Fe nanocomposites: chemical synthesis and magnetic properties

L. Yu, C. Yang and Y. Hou, Nanoscale, 2014, 6, 10638 DOI: 10.1039/C4NR02163K

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