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

Here, we present a simple analytical model to estimate the magnetization (σ s) 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. But, it is difficult to measure the volume of the hard or soft phase material of a composite. We synthesized Sm 2Co 7/Fe-Co, MnAl/Fe-Co, MnBi/Fe-Co, and BaFe 12O 19/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.
Authors:
 [1] ;  [2] ;  [2] ;  [3] ;  [4] ;  [4] ;  [4] ;  [5]
  1. Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Electrical and Computer Engineering and MINT Center; Korea Inst. of Materials Science, Changwon (Republic of Korea). Powder and Ceramics Div.
  2. Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Electrical and Computer Engineering and MINT Center
  3. Mississippi State Univ., Mississippi State, MS (United States). Dept. of Physics & Astronomy and Center for Computational Sciences
  4. Univ. of Texas, Arlington, TX (United States). Dept. of Physics
  5. Korea Inst. of Materials Science, Changwon (Republic of Korea). Powder and Ceramics Div.
Publication Date:
Grant/Contract Number:
AR0000189; W911NF-11-1-0507
Type:
Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 7; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Research Org:
Univ. of Alabama, Tuscaloosa, AL (United States)
Sponsoring Org:
USDOE Advanced Research Projects Agency - Energy (ARPA-E); USDOD; National Research Foundation of Korea (NRF)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; magnetic properties and materials; theory and computation
OSTI Identifier:
1392988

Park, Jihoon, Hong, Yang-Ki, Lee, Woncheol, Kim, Seong-Gon, Rong, Chuangbing, Poudyal, Narayan, Liu, J. Ping, and Choi, Chul-Jin. A Simple Analytical Model for Magnetization and Coercivity of Hard/Soft Nanocomposite Magnets. United States: N. p., Web. doi:10.1038/s41598-017-04632-6.
Park, Jihoon, Hong, Yang-Ki, Lee, Woncheol, Kim, Seong-Gon, Rong, Chuangbing, Poudyal, Narayan, Liu, J. Ping, & Choi, Chul-Jin. A Simple Analytical Model for Magnetization and Coercivity of Hard/Soft Nanocomposite Magnets. United States. doi:10.1038/s41598-017-04632-6.
Park, Jihoon, Hong, Yang-Ki, Lee, Woncheol, Kim, Seong-Gon, Rong, Chuangbing, Poudyal, Narayan, Liu, J. Ping, and Choi, Chul-Jin. 2017. "A Simple Analytical Model for Magnetization and Coercivity of Hard/Soft Nanocomposite Magnets". United States. doi:10.1038/s41598-017-04632-6. https://www.osti.gov/servlets/purl/1392988.
@article{osti_1392988,
title = {A Simple Analytical Model for Magnetization and Coercivity of Hard/Soft Nanocomposite Magnets},
author = {Park, Jihoon and Hong, Yang-Ki and Lee, Woncheol and Kim, Seong-Gon and Rong, Chuangbing and Poudyal, Narayan and Liu, J. Ping and Choi, Chul-Jin},
abstractNote = {Here, 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. But, 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.},
doi = {10.1038/s41598-017-04632-6},
journal = {Scientific Reports},
number = 1,
volume = 7,
place = {United States},
year = {2017},
month = {7}
}