Skip to main content
×
×
Home

Domain structure in LaFeO3 thin films and its role on exchange coupling

  • Jin Won Seo (a1) (a2), Jean Fompeyrine (a2), Heinz Siegwart (a2) and Jean-Pierre Locquet (a2)
Abstract
ABSTRACT

The origin of the exchange bias between a ferro- and an antiferromagnet still is not fully resolved. Many structural parameters such as film thickness, roughness, domain size, domain walls, strain, dislocations, and surface defects play a role. To disentangle their individual contributions, one must correlate each of these structural effects with the exchange bias. Here we report our first such attempts using thin films of the antiferromagnetic orthoferrite LaFeO3 grown by molecular beam epitaxy. We investigate how the epitaxial relationship and strain affect the domain configuration as well as their size and orientation. Next, we explore how these different domains can pin ferromagnetic domains in exchange-coupled systems. We conclude that decreasing the domain size of the antiferromagnet leads to a higher exchange bias. The highest exchange bias was obtained for LaFeO3 films on MgO substrates.

Copyright
References
Hide All
1.Mieklejohn W. H. and Bean C. P., Phys. Rev. 102, 1413 (1956).
2.Nogues J. and Schuller I. K., J. Magn. Magn. Mater. 192, 203 (1999).
3.Berkowitz A. E. and Takano K., J. Magn. Magn. Mater. 200, 552 (1999).
4.Scholl A., Stöhr J., Lüning J., Seo J. W., Fompeyrine J., Siegwart H., J.-P. Locquet, Nolting F., Anders S., Fullerton E. E., Scheinfein M. R., and Padmore H. A., Science 287, 1014 (2000).
5.Nolting F., Scholl A., Stöhr J., Seo J. W., Fompeyrine J., Siegwart H., Locquet J.-P., Anders S., Lüning J., Fullerton E. E., Toney M. F., Scheinfein R., and Padmore H. A., Nature 405, 767 (2000).
6.Locquet J.-P., Catana A., Mächler E., Gerber C. and Bednorz J. G., Appl. Phys. Lett. 64, 372 (1994).
7.Stöhr J., Padmore H. A., Anders S., Stammler T., and Scheinfein M. R., Surface Rev. Lett. 5, 1297 (1998).
Recommend this journal

Email your librarian or administrator to recommend adding this journal to your organisation's collection.

MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
  • URL: /core/journals/mrs-online-proceedings-library-archive
Please enter your name
Please enter a valid email address
Who would you like to send this to? *
×

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 3 *
Loading metrics...

Abstract views

Total abstract views: 69 *
Loading metrics...

* Views captured on Cambridge Core between September 2016 - 22nd January 2018. This data will be updated every 24 hours.