A Simple Analytical Model for Magnetization and Coercivity of Hard/Soft Nanocomposite Magnets

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作者：
Jihoon Park
Yang-Ki Hong
Woncheol Lee
Seong-Gon Kim
Chuangbing Rong
Narayan Poudyal
J. Ping Liu
Chul-Jin Choi
机构：
[1] The University of Alabama Tuscaloosa,Department of Electrical and Computer Engineering and MINT Center
[2] Powder and Ceramics Division,Department of Physics & Astronomy and Center for Computational Sciences
[3] Korea Institute of Materials Science,Department of Physics
[4] Mississippi State University,undefined
[5] University of Texas at Arlington,undefined
来源：
Scientific Reports | / 7卷
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摘要：
We present a simple analytical model to estimate the magnetization (σs) and intrinsic coercivity (Hci) of a hard/soft nanocomposite magnet using the mass fraction. Previously proposed models are based on the volume fraction of the hard phase of the composite. However, it is difficult to measure the volume of the hard or soft phase material of a composite. We synthesized Sm2Co7/Fe-Co, MnAl/Fe-Co, MnBi/Fe-Co, and BaFe12O19/Fe-Co composites for characterization of their σs and Hci. The experimental results are in good agreement with the present model. Therefore, this analytical model can be extended to predict the maximum energy product (BH)max of hard/soft composite.
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