Enhanced coercivity in α-(Fe,Co)/(Nd,Pr)2Fe14B nanocomposite magnets via interfacial modification

Wei Li; Lanlan Li; Xiaohong Li; Hongyu Sun; Xiangyi Zhang

doi:10.1088/0022-3727/41/15/155003

Enhanced coercivity in α-(Fe,Co)/(Nd,Pr)₂Fe₁₄B nanocomposite magnets via interfacial modification

Wei Li, Lanlan Li, Xiaohong Li, Hongyu Sun, Xiangyi Zhang

Yanshan University

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

We have prepared α-(Fe,Co)/(Nd,Pr)₂Fe₁₄B nanocomposite magnets having a high coercivity Hc = 7.5 kOe and a large energy product ( BH )_max = 22.7 MGOe by interfacial modification using an intergranular amorphous phase, as compared with the corresponding values obtained without the intergranular phase, H_c = 5.5 kOe and ( BH ) _max = 16.1 MGOe. The enhanced coercivity is attributed to the increase in the nucleation field for magnetization reversal due to interfacial modification. This demonstrates a counter-intuitive approach for enhancing the magnetic properties of nanocomposite magnets.

Original language	English
Article number	155003
Journal	Journal of Physics D: Applied Physics
Volume	41
Issue number	15
Number of pages	5
ISSN	0022-3727
DOIs	https://doi.org/10.1088/0022-3727/41/15/155003
Publication status	Published - 2008
Externally published	Yes

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title = "Enhanced coercivity in α-(Fe,Co)/(Nd,Pr)2Fe14B nanocomposite magnets via interfacial modification",

abstract = "We have prepared α-(Fe,Co)/(Nd,Pr)2Fe14B nanocomposite magnets having a high coercivity Hc = 7.5 kOe and a large energy product ( BH )max = 22.7 MGOe by interfacial modification using an intergranular amorphous phase, as compared with the corresponding values obtained without the intergranular phase, Hc = 5.5 kOe and ( BH ) max = 16.1 MGOe. The enhanced coercivity is attributed to the increase in the nucleation field for magnetization reversal due to interfacial modification. This demonstrates a counter-intuitive approach for enhancing the magnetic properties of nanocomposite magnets.",

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T1 - Enhanced coercivity in α-(Fe,Co)/(Nd,Pr)2Fe14B nanocomposite magnets via interfacial modification

AU - Li, Wei

AU - Li, Lanlan

AU - Li, Xiaohong

AU - Sun, Hongyu

AU - Zhang, Xiangyi

PY - 2008

Y1 - 2008

N2 - We have prepared α-(Fe,Co)/(Nd,Pr)2Fe14B nanocomposite magnets having a high coercivity Hc = 7.5 kOe and a large energy product ( BH )max = 22.7 MGOe by interfacial modification using an intergranular amorphous phase, as compared with the corresponding values obtained without the intergranular phase, Hc = 5.5 kOe and ( BH ) max = 16.1 MGOe. The enhanced coercivity is attributed to the increase in the nucleation field for magnetization reversal due to interfacial modification. This demonstrates a counter-intuitive approach for enhancing the magnetic properties of nanocomposite magnets.

AB - We have prepared α-(Fe,Co)/(Nd,Pr)2Fe14B nanocomposite magnets having a high coercivity Hc = 7.5 kOe and a large energy product ( BH )max = 22.7 MGOe by interfacial modification using an intergranular amorphous phase, as compared with the corresponding values obtained without the intergranular phase, Hc = 5.5 kOe and ( BH ) max = 16.1 MGOe. The enhanced coercivity is attributed to the increase in the nucleation field for magnetization reversal due to interfacial modification. This demonstrates a counter-intuitive approach for enhancing the magnetic properties of nanocomposite magnets.

U2 - 10.1088/0022-3727/41/15/155003

DO - 10.1088/0022-3727/41/15/155003

M3 - Journal article

SN - 0022-3727

VL - 41

JO - Journal of Physics D: Applied Physics

JF - Journal of Physics D: Applied Physics

IS - 15

M1 - 155003