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 arrow Search for citing articles in:
ISI Web of Science (6)
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Mayer, J.
Right arrow Articles by Tomokiyo, Y.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Mayer, J.
Right arrow Articles by Tomokiyo, Y.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Journal of Electron Microscopy 47(4): 283-291 (1998)
© 1998 Oxford University Press

First electron spectroscopic imaging experiments on the new JEOL 2010 FEF

Joachim Mayer*, Syo Matsumura1 and Yoshitsugu Tomokiyo2

Max-Planck-Institut f{euro}r Metallforschung Seestr. 92, d-70174 Stuttgart, Germany
1Kyushu University, Department of Nuclear Engineering, Faculty of Engineering 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-81
2Kyushu University, HVEM Laboratory 6-10-1, Hakozaki, Higashi-ku, Fukuoka 812-81, Japan

*To whom correspondence should be addressed. E-mail: jmayer{at}vaxwwl.mpi-stuttgart.mpg.de

The new JEOL 2010 FEF is a field emission gun TEM equipped with an Omega energy filter which is integrated in the projector lens system of the instrument. In the present study, the performance of the instrument in the analysis of elemental distributions by means of electron spectroscopic imaging was evaluated. Two systems were chosen: (i) Ca-doped Si3N4 ceramics, in which the Ca segregation in the grain boundary films and triple junctions was investigated, and (ii) the 27R polytypoid in Al9O3N7, in which an attempt to image the chemical modulation of the oxygen content within the structural unit cell was made. The results on the Si3N4 ceramics prove that Ca shows a strong tendency to segregate to the interface between the amorphous oxide phase and the Si3N4 grains. Our findings support the model of an electrical double layer giving rise to the dissipative force which widens the grain boundary film thickness with increasing Ca-content. In the Al9O3N7 material the expected modulation of the oxygen content with a periodicity of 2.4 nm could be verified by electron spectroscopic imaging. It can be concluded that oxygen partly segregates to the planar inversion domain boundaries, whereas the remainder of the oxygen content is homogeneously distributed on the anion sites.

Keywords     energy filtering transmission electron microscopy, electron spectroscopic imaging, grain boundary films, Si3N4 ceramics

Received     16 October 1997, accepted 4 March 1998


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


This article has been cited by other articles:


Home page
 American MineralogistHome page
K. T. Moore, D. C. Elbert, and D. R. Veblen
Energy-filtered transmission electron microscopy (EFTEM) of intergrown pyroxenes
American Mineralogist, July 1, 2001; 86(7-8): 814 - 825.
[Abstract] [Full Text] [PDF]


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.