A review of radiation-induced demagnetization of permanent magnets

Samin, Adib Jamil

doi:10.1016/j.jnucmat.2018.02.029

Title: A review of radiation-induced demagnetization of permanent magnets

Abstract

Radiation-induced demagnetization of permanent magnets is important for a number of applications including space missions, particle accelerators and robots designed to carry out rescue missions at nuclear accidents where magnet failure can lead to serious consequences. This topic has been studied by several investigators over the past three decades and in this work, a review of the available literature is conducted and some general conclusions and trends are presented. In short, it can be gleaned that magnetism loss is dependent on the type of radiation, the energy of the incoming particle and the overall dose or fluence. Furthermore, magnetism loss also shows a dependence on the type of the irradiated magnet, the coercivity of the magnet, the demagnetizing field and the temperature of irradiation.

Authors:

^[1]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Materials Science and Technology Division

Publication Date:: 2018-05-01

Research Org.:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE Laboratory Directed Research and Development (LDRD) Program

OSTI Identifier:: 1566107

Report Number(s):: LA-UR-18-28395
Journal ID: ISSN 0022-3115; TRN: US2000967

Grant/Contract Number:: 89233218CNA000001

Resource Type:: Accepted Manuscript

Journal Name:: Journal of Nuclear Materials

Additional Journal Information:: Journal Volume: 503; Journal Issue: C; Journal ID: ISSN 0022-3115

Publisher:: Elsevier

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE

Citation Formats


                    Samin, Adib Jamil. A review of radiation-induced demagnetization of permanent magnets.  United States: N. p., 2018. 
Web.  doi:10.1016/j.jnucmat.2018.02.029.

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                    Samin, Adib Jamil. A review of radiation-induced demagnetization of permanent magnets.  United States.  https://doi.org/10.1016/j.jnucmat.2018.02.029

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                    Samin, Adib Jamil. Tue .  
"A review of radiation-induced demagnetization of permanent magnets".  United States.  https://doi.org/10.1016/j.jnucmat.2018.02.029.  https://www.osti.gov/servlets/purl/1566107.

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@article{osti_1566107,

  title        = {A review of radiation-induced demagnetization of permanent magnets},

  author       = {Samin, Adib Jamil},

  abstractNote = {Radiation-induced demagnetization of permanent magnets is important for a number of applications including space missions, particle accelerators and robots designed to carry out rescue missions at nuclear accidents where magnet failure can lead to serious consequences. This topic has been studied by several investigators over the past three decades and in this work, a review of the available literature is conducted and some general conclusions and trends are presented. In short, it can be gleaned that magnetism loss is dependent on the type of radiation, the energy of the incoming particle and the overall dose or fluence. Furthermore, magnetism loss also shows a dependence on the type of the irradiated magnet, the coercivity of the magnet, the demagnetizing field and the temperature of irradiation.},

  doi          = {10.1016/j.jnucmat.2018.02.029},

  journal      = {Journal of Nuclear Materials},

  number       = C,

  volume       = 503,

  place        = {United States},

  year         = {2018},

  month        = {5}

}

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Figure 1: Region of magnetic reversal induced by the thermal spike

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