In-situ high-temperature domain structures of die-upset Nd-Fe-B magnets

Yikun Fang, Xiaolu Yin, Ralph Skomski, Hongsheng Cheng, Kuikui Song, Minggang Zhu, Zhaohui Guo, Wei Li, Sy Hwang Liou

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Magnetic domains of a die-upset Nd-Fe-B magnet with an energy product of about 50 MGOe are investigated by using in-situ magnetic force microscopy (MFM), varying temperature from room temperature to 240 °C. For both as-prepared and magnetized Nd-Fe-B samples, the domain-pattern evolution during thermal demagnetization is monitored by MFM. The temperature dependence of the evolution of reverse domains is explained by micromagnetic models. At all temperatures, the magnetization reversal in the technological relevant magnetized limit proceeds by nucleation.

Original languageEnglish (US)
Pages (from-to)72-75
Number of pages4
JournalScripta Materialia
Volume111
DOIs
StatePublished - Jan 15 2016

Keywords

  • Die-upset Nd-Fe-B magnets
  • Magnetic domains
  • Magnetic force microscopy (MFM)

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys

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