Skip Navigation

This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Hirayama, T.
Right arrow Articles by Tonomura, A.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Hirayama, T.
Right arrow Articles by Tonomura, A.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Journal of Electron Microscopy 43(4): 190-197 (1994)
© 1994 Oxford University Press

Observation of Single Magnetic-Domain Particles by Electron Holographic Microscopy

Tsukasa Hirayama, Jun Chen, Qingxin Ru, Kazuo Ishizuka, Takayoshi Tanji and Akira Tonomura

Tonomura Electron Wavefront Project, ERATO, Research Development Corporation of Japan (JRDQ) P.O. Box 5, Hatoyama, Saltama, 350-03 Japan

Single magnetic-domain particles of barium ferrite and iron are directly observed by electron holographic microscopy. Holograms of barium ferrite particles about 1 µm in size are formed without using the objective lens but with controlling the intermediate lens. Holograms of iron particles with diameters of several tens of nanometers are also formed using a specially designed low magnetic-field pole piece. The phase distribution of the object electron wave is digitally reconstructed by the Fourier transform method and then converted to interference micrographs, in which magnetic flux lines are directly observed. Isolated barium ferrite particles in the single magnetic-domain state are observed in these interference micrographs directly. A string of iron particles in the single-domain state is also observed.

Keywords     electron holographic microscopy, magnetic flux line, single magnetic-domain, barium ferrite, iron

Received     25 March 1994, accepted 22 June 1994


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?




Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.