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

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

doi:10.1038/s41598-017-04632-6

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

Abstract

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 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.

Authors:

Park, Jihoon ^[1]; Hong, Yang-Ki ^[2]; Lee, Woncheol ^[2]; Kim, Seong-Gon ^[3]; Rong, Chuangbing ^[4]; Poudyal, Narayan ^[4]; Liu, J. Ping ^[4]; Choi, Chul-Jin ^[5]

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.
Univ. of Alabama, Tuscaloosa, AL (United States). Dept. of Electrical and Computer Engineering and MINT Center
Mississippi State Univ., Mississippi State, MS (United States). Dept. of Physics & Astronomy and Center for Computational Sciences
Univ. of Texas, Arlington, TX (United States). Dept. of Physics
Korea Inst. of Materials Science, Changwon (Republic of Korea). Powder and Ceramics Div.

Publication Date:: Mon Jul 10 00:00:00 EDT 2017

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)

OSTI Identifier:: 1392988

Grant/Contract Number:: AR0000189; W911NF-11-1-0507

Resource 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

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; magnetic properties and materials; theory and computation

Citation Formats


                    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., 2017. 
Web.  doi:10.1038/s41598-017-04632-6.

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                    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.  https://doi.org/10.1038/s41598-017-04632-6

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                    Park, Jihoon, Hong, Yang-Ki, Lee, Woncheol, Kim, Seong-Gon, Rong, Chuangbing, Poudyal, Narayan, Liu, J. Ping, and Choi, Chul-Jin. Mon .  
"A Simple Analytical Model for Magnetization and Coercivity of Hard/Soft Nanocomposite Magnets".  United States.  https://doi.org/10.1038/s41598-017-04632-6.  https://www.osti.gov/servlets/purl/1392988.

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@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         = {Mon Jul 10 00:00:00 EDT 2017},

  month        = {Mon Jul 10 00:00:00 EDT 2017}

}

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Works referenced in this record:

The exchange-spring magnet: a new material principle for permanent magnets
journal, July 1991

Kneller, E. F.; Hawig, R.
IEEE Transactions on Magnetics, Vol. 27, Issue 4, p. 3588-3560
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One-Pot Synthesis of Urchin-like FePd–Fe ₃ O ₄ and Their Conversion into Exchange-Coupled L1 ₀ –FePd–Fe Nanocomposite Magnets
journal, September 2013

Yu, Yongsheng; Sun, Kewei; Tian, Yuan
Nano Letters, Vol. 13, Issue 10
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Electronic Structure and Maximum Energy Product of MnBi
journal, August 2014

Park, Jihoon; Hong, Yang-Ki; Lee, Jaejin
Metals, Vol. 4, Issue 3
DOI: 10.3390/met4030455

Magnetization and Intrinsic Coercivity for τ-phase Mn₅₄Al₄₆/α-phase Fe₆₅Co₃₅Composite
journal, March 2014

Park, Jihoon; Hong, Yang-Ki; Lee, Jaejin
Journal of Magnetics, Vol. 19, Issue 1
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A Mechanism of Magnetic Hysteresis in Heterogeneous Alloys
journal, May 1948

Stoner, E. C.; Wohlfarth, E. P.
Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 240, Issue 826
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Giant energy product in nanostructured two-phase magnets
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Physical Theory of Ferromagnetic Domains
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The exchange-spring magnet: a new material principle for permanent magnets
journal, July 1991

Kneller, E. F.; Hawig, R.
IEEE Transactions on Magnetics, Vol. 27, Issue 4, p. 3588-3560
DOI: 10.1109/20.102931

Electronic Structure and Maximum Energy Product of MnBi
journal, August 2014

Park, Jihoon; Hong, Yang-Ki; Lee, Jaejin
Metals, Vol. 4, Issue 3
DOI: 10.3390/met4030455

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

Abstract

Citation Formats

The exchange-spring magnet: a new material principle for permanent magnets journal, July 1991

A Mechanism of Magnetic Hysteresis in Heterogeneous Alloys journal, May 1948

One-Pot Synthesis of Urchin-like FePd–Fe 3 O 4 and Their Conversion into Exchange-Coupled L1 0 –FePd–Fe Nanocomposite Magnets journal, September 2013

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Magnetization and Intrinsic Coercivity for τ-phase Mn54Al46/α-phase Fe65Co35Composite journal, March 2014

A Mechanism of Magnetic Hysteresis in Heterogeneous Alloys journal, May 1948

Giant energy product in nanostructured two-phase magnets journal, December 1993

Physical Theory of Ferromagnetic Domains journal, October 1949

The exchange-spring magnet: a new material principle for permanent magnets journal, July 1991

Electronic Structure and Maximum Energy Product of MnBi journal, August 2014

The exchange-spring magnet: a new material principle for permanent magnets
journal, July 1991

A Mechanism of Magnetic Hysteresis in Heterogeneous Alloys
journal, May 1948

One-Pot Synthesis of Urchin-like FePd–Fe ₃ O ₄ and Their Conversion into Exchange-Coupled L1 ₀ –FePd–Fe Nanocomposite Magnets
journal, September 2013

Electronic Structure and Maximum Energy Product of MnBi
journal, August 2014

Magnetization and Intrinsic Coercivity for τ-phase Mn₅₄Al₄₆/α-phase Fe₆₅Co₃₅Composite
journal, March 2014

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journal, October 1949

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journal, August 2014