High temperature magnetic properties of SmCo5/α-Fe(Co) bulk nanocomposite magnets

被引：30

作者：

Rong, Chuanbing ^{[1
]}

Poudyal, Narayan ^{[1
]}

Liu, X. B. ^{[1
]}

Zhang, Ying ^{[1
,2
]}

Kramer, M. J. ^{[2
]}

Liu, J. Ping ^{[1
]}

机构：

[1] Univ Texas Arlington, Dept Phys, Arlington, TX 76019 USA

[2] Iowa State Univ, USDOE, Ames Lab, Div Mat Sci & Engn, Ames, IA 50011 USA

来源：

APPLIED PHYSICS LETTERS | 2012年 / 101卷 / 15期

关键词：

PERMANENT-MAGNETS; COERCIVITY; DEPENDENCE; FE; CU; MECHANISM; SM(CO;

D O I：

10.1063/1.4758480

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

To find alternative high temperature magnets containing no heavy rare earths for power applications, SmCo5/Fe bulk nanocomposite magnets with enhanced energy density and high thermal stability have been produced by using a ball-milling plus warm-compaction route. Up to 30% of the Fe soft magnetic phase has been added to the composites with grain size <20 nm distributed homogenously in the matrix of the SmCo5 hard magnetic phase. It was observed that the microstructure does not change with temperature up to 500 degrees C. It is also observed that the thermal stability of bulk nanocomposite samples is closely related to bulk density. Energy products above 11 MGOe have been obtained at 300 degrees C in fully dense bulk SmCo5/Fe nanocomposite magnets, which is 65% higher than that of a single-phase counterpart at the same temperature. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4758480]

引用

页数：3

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