Processing of MnBi bulk magnets with enhanced energy product

Poudyal, Narayan; Liu, Xubo; Wang, Wei; Nguyen, V. Vuong; Ma, Yilong; Gandha, Kinjal; Elkins, Kevin; Liu, J. Ping; Sun, Kewei; Kramer, M. J.; Cui, Jun

doi:10.1063/1.4942955

Title: Processing of MnBi bulk magnets with enhanced energy product

Abstract

Here, we report magnetic properties and microstructure of high energy-product MnBi bulk magnets fabricated by low-temperature ball-milling and warm compaction technique. A maximum energy product (BH)_max of 8.4 MGOe and a coercivity of 6.2 kOe were obtained in the bulk MnBi magnet at room temperature. Magnetic characterization at elevated temperatures showed an increase in coercivity to 16.2 kOe while (BH)_max value decreased to 6.8 MGOe at 400 K. Microstructure characterization revealed that the bulk magnets consist of oriented uniform nanoscale grains with average size about 50 nm.

Authors:

Poudyal, Narayan;

; Wang, Wei; Nguyen, V. Vuong; Ma, Yilong; Gandha, Kinjal; Elkins, Kevin; Liu, J. Ping; Sun, Kewei; Kramer, M. J.; Cui, Jun

Publication Date:: Sun May 01 00:00:00 EDT 2016

Research Org.:: Ames Lab., Ames, IA (United States)

Sponsoring Org.:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

OSTI Identifier:: 1239162

Alternate Identifier(s):: OSTI ID: 1254300; OSTI ID: 1421063

Report Number(s):: IS-J-8991
Journal ID: ISSN 2158-3226

Grant/Contract Number:: REACT 0472-1526; AC02-07CH11358; W911NF-11-1-0507

Resource Type:: Journal Article: Published Article

Journal Name:: AIP Advances

Additional Journal Information:: Journal Name: AIP Advances Journal Volume: 6 Journal Issue: 5; Journal ID: ISSN 2158-3226

Publisher:: American Institute of Physics

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; magnets; powders; permanent magnets; coercive force; milling

Citation Formats


                    Poudyal, Narayan, Liu, Xubo, Wang, Wei, Nguyen, V. Vuong, Ma, Yilong, Gandha, Kinjal, Elkins, Kevin, Liu, J. Ping, Sun, Kewei, Kramer, M. J., and Cui, Jun. Processing of MnBi bulk magnets with enhanced energy product.  United States: N. p., 2016. 
        Web.  doi:10.1063/1.4942955.

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                    Poudyal, Narayan, Liu, Xubo, Wang, Wei, Nguyen, V. Vuong, Ma, Yilong, Gandha, Kinjal, Elkins, Kevin, Liu, J. Ping, Sun, Kewei, Kramer, M. J., & Cui, Jun. Processing of MnBi bulk magnets with enhanced energy product.  United States.  https://doi.org/10.1063/1.4942955

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                    Poudyal, Narayan, Liu, Xubo, Wang, Wei, Nguyen, V. Vuong, Ma, Yilong, Gandha, Kinjal, Elkins, Kevin, Liu, J. Ping, Sun, Kewei, Kramer, M. J., and Cui, Jun. 2016.  
        "Processing of MnBi bulk magnets with enhanced energy product".  United States.  https://doi.org/10.1063/1.4942955.

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@article{osti_1239162,

  title        = {Processing of MnBi bulk magnets with enhanced energy product},

  author       = {Poudyal, Narayan and Liu, Xubo and Wang, Wei and Nguyen, V. Vuong and Ma, Yilong and Gandha, Kinjal and Elkins, Kevin and Liu, J. Ping and Sun, Kewei and Kramer, M. J. and Cui, Jun},

  abstractNote = {Here, we report magnetic properties and microstructure of high energy-product MnBi bulk magnets fabricated by low-temperature ball-milling and warm compaction technique. A maximum energy product (BH)max of 8.4 MGOe and a coercivity of 6.2 kOe were obtained in the bulk MnBi magnet at room temperature. Magnetic characterization at elevated temperatures showed an increase in coercivity to 16.2 kOe while (BH)max value decreased to 6.8 MGOe at 400 K. Microstructure characterization revealed that the bulk magnets consist of oriented uniform nanoscale grains with average size about 50 nm.},

  doi          = {10.1063/1.4942955},

  url          = {https://www.osti.gov/biblio/1239162},
  journal      = {AIP Advances},

  issn         = {2158-3226},

  number       = 5,

  volume       = 6,

  place        = {United States},

  year         = {Sun May 01 00:00:00 EDT 2016},

  month        = {Sun May 01 00:00:00 EDT 2016}

}

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Similar Records

Title: Processing of MnBi bulk magnets with enhanced energy product

Abstract

Citation Formats

Magnetic Materials and Devices for the 21st Century: Stronger, Lighter, and More Energy Efficient journal, December 2010

Prospects for Non-Rare Earth Permanent Magnets for Traction Motors and Generators journal, June 2012

Advances in nanostructured permanent magnets research journal, December 2012

New permanent magnets; manganese compounds journal, January 2014

Preparation and magnetic properties of MnBi journal, April 2012

Structural and magnetic properties of bulk MnBi permanent magnets journal, April 2011

Nanostructured bulk MnBi magnets fabricated by hot compaction of cryomilled powders journal, June 2013

A New Permanent Magnet from Powdered Manganese Bismuthide journal, November 1952

Magnetic properties of MnBi prepared by rapid solidification journal, December 1992

Temperature dependences of structure and coercivity for melt-spun MnBi compound journal, March 2013

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

High-energy-product MnBi films with controllable anisotropy: High-energy-product MnBi films with controllable anisotropy journal, May 2015

Crystal structure and magnetic properties of MnxBi100−x (x=48, 50, 55 and 60) compounds journal, June 2012

Anisotropic fully dense MnBi permanent magnet with high energy product and high coercivity at elevated temperatures journal, January 2013

Novel processing of high-performance MnBi magnets journal, August 2014

Thermal stability of MnBi magnetic materials journal, January 2014

Crystal structure and magnetic properties of MnBi–Bi nanocomposite journal, May 2005

Structural and magnetic properties of rapidly quenched BiMn alloys journal, March 1991

Formation of MnBi ferromagnetic phases through crystallization of the amorphous phase journal, April 1991

Development of MnBi permanent magnet: Neutron diffraction of MnBi powder journal, May 2014

Transport spin polarization of high Curie temperature MnBi films journal, January 2011

Metal-Redox Synthesis of MnBi Hard Magnetic Nanoparticles journal, June 2015

MnBi magnets fabricated through spark plasma-sintering process journal, March 2007

Crystal structure, magnetic properties and electronic structure of the MnBi intermetallic compound journal, June 2002

Magnetic Materials and Devices for the 21st Century: Stronger, Lighter, and More Energy Efficient
journal, December 2010

Prospects for Non-Rare Earth Permanent Magnets for Traction Motors and Generators
journal, June 2012

Advances in nanostructured permanent magnets research
journal, December 2012

New permanent magnets; manganese compounds
journal, January 2014

Preparation and magnetic properties of MnBi
journal, April 2012

Structural and magnetic properties of bulk MnBi permanent magnets
journal, April 2011

Nanostructured bulk MnBi magnets fabricated by hot compaction of cryomilled powders
journal, June 2013

A New Permanent Magnet from Powdered Manganese Bismuthide
journal, November 1952

Magnetic properties of MnBi prepared by rapid solidification
journal, December 1992

Temperature dependences of structure and coercivity for melt-spun MnBi compound
journal, March 2013

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

High-energy-product MnBi films with controllable anisotropy: High-energy-product MnBi films with controllable anisotropy
journal, May 2015

Crystal structure and magnetic properties of MnxBi100−x (x=48, 50, 55 and 60) compounds
journal, June 2012

Anisotropic fully dense MnBi permanent magnet with high energy product and high coercivity at elevated temperatures
journal, January 2013

Novel processing of high-performance MnBi magnets
journal, August 2014

Thermal stability of MnBi magnetic materials
journal, January 2014

Crystal structure and magnetic properties of MnBi–Bi nanocomposite
journal, May 2005

Structural and magnetic properties of rapidly quenched BiMn alloys
journal, March 1991

Formation of MnBi ferromagnetic phases through crystallization of the amorphous phase
journal, April 1991

Development of MnBi permanent magnet: Neutron diffraction of MnBi powder
journal, May 2014

Transport spin polarization of high Curie temperature MnBi films
journal, January 2011

Metal-Redox Synthesis of MnBi Hard Magnetic Nanoparticles
journal, June 2015

MnBi magnets fabricated through spark plasma-sintering process
journal, March 2007

Crystal structure, magnetic properties and electronic structure of the MnBi intermetallic compound
journal, June 2002