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

Jihoon Park; Yang-Ki Hong; Woncheol Lee; Seong-Gon Kim; Chuangbing Rong; Narayan Poudyal; J. Ping Liu; Chul-Jin Choi

doi:10.1038/s41598-017-04632-6

Scientific Reports (Jul 2017)

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

Jihoon Park,
Yang-Ki Hong,
Woncheol Lee,
Seong-Gon Kim,
Chuangbing Rong,
Narayan Poudyal,
J. Ping Liu,
Chul-Jin Choi

Affiliations

Jihoon Park: Department of Electrical and Computer Engineering and MINT Center, The University of Alabama Tuscaloosa
Yang-Ki Hong: Department of Electrical and Computer Engineering and MINT Center, The University of Alabama Tuscaloosa
Woncheol Lee: Department of Electrical and Computer Engineering and MINT Center, The University of Alabama Tuscaloosa
Seong-Gon Kim: Department of Physics & Astronomy and Center for Computational Sciences, Mississippi State University
Chuangbing Rong: Department of Physics, University of Texas at Arlington
Narayan Poudyal: Department of Physics, University of Texas at Arlington
J. Ping Liu: Department of Physics, University of Texas at Arlington
Chul-Jin Choi: Powder and Ceramics Division, Korea Institute of Materials Science

DOI: https://doi.org/10.1038/s41598-017-04632-6
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 5

Abstract

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Abstract We present a simple analytical model to estimate the magnetization (σ s) and intrinsic coercivity (H ci) 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 σ s and H ci. 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.

Published in Scientific Reports

ISSN: 2045-2322 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Medicine; Science
Website: https://www.nature.com/srep/

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