Magnetization Process in Sm2Fe17N3 Fine Powders Studied Using Lorentz Microscopy and Electron Holography
| Autor: | Daisuke Shindo, Joong Jung Kim, Ki Hyun Kim, Ishikawa Takashi, Kenji Ohmori |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Condensed matter physics Electromagnet Mechanical Engineering Lorentz microscopy Condensed Matter Physics Magnetic flux Electron holography law.invention Magnetic field Condensed Matter::Materials Science Magnetization Domain wall (magnetism) Mechanics of Materials law Scientific method General Materials Science |
| Zdroj: | MATERIALS TRANSACTIONS. 51:1302-1307 |
| ISSN: | 1347-5320 1345-9678 |
| Popis: | The magnetization process for Sm 2 Fe 17 N 3 fine powders was studied by Lorentz microscopy and electron holography. In ex situ observations under the external magnetic field produced by an electromagnet, the change of the domain wall position was observed by Lorentz microscopy, while the drastic change in the distribution of lines of magnetic flux outside the fine powders was clarified by electron holography. Through in situ observations with a piezodriving holder with localized magnetic field produced by a sharp magnetic needle, the shift of domain walls was observed in real time by Lorentz microscopy. Finally, on the basis of Lorentz microscopy observations, the magnetization process of Sm 2 Fe 17 N 3 fine powders was briefly discussed taking into account a hysteresis loop. |
| Databáze: | OpenAIRE |
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