Dipolar energy of Nd-Fe-B nanocrystalline magnets in magnetization reversal process

We analyzed the dipolar energy of Nd-Fe-B nanocrystalline magnets in magnetization reversal process through visualizing magnetic dipolar interaction. We obtained magnetization distribution images experimentally by using scanning transmission X-ray microscopy (STXM). The magnetic dipolar interaction...

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Bibliographic Details
Published inJournal of applied physics Vol. 115; no. 17
Main Authors Ohtori, Hiroyuki, Iwano, Kaoru, Mitsumata, Chiharu, Yano, Masao, Kato, Akira, Shoji, Tetsuya, Manabe, Akira, Ono, Kanta
Format Journal Article
LanguageEnglish
Published Melville American Institute of Physics 07.05.2014
Subjects
Ferrous alloys
Image transmission
Magnetic materials
Magnetization reversal
Magnets
Nanocrystals
Neodymium
X ray microscopy
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Summary:We analyzed the dipolar energy of Nd-Fe-B nanocrystalline magnets in magnetization reversal process through visualizing magnetic dipolar interaction. We obtained magnetization distribution images experimentally by using scanning transmission X-ray microscopy (STXM). The magnetic dipolar interaction was calculated by the interaction between the magnetization at each point and those at the other points on the STXM image. We showed the dipolar energy in the nanocrystalline Nd-Fe-B magnets and compared it with the exchange energy at various applied fields. Our results indicated the significance of the dipolar energy in magnetization reversal process.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.4864041