Hostname: page-component-586b7cd67f-t7fkt Total loading time: 0 Render date: 2024-11-29T08:11:06.476Z Has data issue: false hasContentIssue false
  • English
  • Français

Self-Assembled Magnetic Dots, Antidots, Dot Chains, and Stripes: Epitaxial Co on Ru(0001) (INVITED)

Published online by Cambridge University Press:  17 March 2011

Dongqi Li  and
Chengtao Yu
Dongqi Li
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
Chengtao Yu
Affiliation:
Materials Science Division, Argonne National Laboratory, Argonne, IL 60439
Get access

Abstract

We have observe a metal-on-metal growth mode in Co/Ru(0001) at elevated temperature, where self-assembled 3D dots and antidots in rather regular truncated pyramidal shapes are mainly attributed to a stress-driven mechanism. While good lattice match has been one of the major criteria to guide epitaxial growth, it is possible that well-chosen lattice mismatched systems could be utilized to fabricate strain-engineered regular magnetic nanostructure arrays with different sizes and periodicity. A linear alignment of self-assembled Co dots and stripes can be created along grooves on a Ru(0001) substrate. Our observations suggest that it may be possible to direct the alignment and positioning in self-assembly of complex patterns by means of substrate templating, which should be of general applicability beyond the Co/Ru system. Magnetically, the dots are ferromagnetic with in-plane single-domain state, while the thick films with antidots exhibit perpendicular stripe domains.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 696: Symposium N – Current Issues in Heteroepitaxial Growth--Stress Relaxation and Self Assembly , 2001 , N9.1
Copyright
Copyright © Materials Research Society 2002

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Sun, Shouheng, Murray, C.B., Weller, D., Folks, L., and Moser, A., Science 287, 1989 (2000); C.T. Black, C.B. Murray, R.L. Sandstrom, and Shouheng Sun, Science 290, 1131 (2000).Google Scholar
2. Gambardella, P., Blanc, M., Brune, H., Kuhnke, K., and Kern, K., Phys. Rev. B 61, 2254 (2000); P. Gambardella, M. Blanc, L. Bürgi, K. Kuhnke, and K. Kern, Surf. Sci. 449, 93 (2000).Google Scholar
3. Liu, K., Baker, S. M., Tuominen, M., Russell, T. P and Schuller, I. K., Phys. Rev. B 63, 060403(2001).Google Scholar
4.Phys. Rev. 63, 060403(2001)Google Scholar
5. Chou, Y., Wei, M.S., Krauss, P.R., and Fisher, P.B., J. Appl. Phys., 76, 6673 (1994).Google Scholar
6. White, R.L., New, R.H., and Pease, R.F.W., IEEE Transactions on Magnetics, 33, 990 (1997).Google Scholar
7. Politi, P., Grenet, G., Amarty, A., Ponchet, A., and Villain, J., Phys. Reports 324, 271(2000), and references therein.Google Scholar
8. Himpsel, F.J., Jung, T., and Ortega, J.E., Surf. Rev. Lett. 4, 371 (1997).Google Scholar
9. Hauschild, J., Elmers, H.J., and Gradmann, U., Phys. Rev. B 57, R677 (1998).Google Scholar
10. Shen, J., Klaua, M., Ohresser, P., Jenniches, H., Barthel, J., Mohan, C.V., and Kirschner, J., Phys. Rev. B 56, 11134 (1997).Google Scholar
11. Li, Dongqi, Cuenya, B. Roldan, Pearson, J., and Bader, S.D., Phys. Rev. B 64, 144410 (2001); B. Roldan Cuenya, J. Pearson, Chengtao Yu, Dongqi Li, and S.D. Bader, J. Vac. Sci. Technol. A 19, 1182 (2001).Google Scholar
12. Röder, H., Hahm, E., Brune, H., Bucher, J-P and Kern, K., Nature 366, 141 (1993); H. Brune, K. Bromann, H. Röder, K. Kern, J. Jacobsen, P. Stoltze, K. Jacobsen, and J. Nørskov, Phys. Rev. B 52, R14380, (1995).Google Scholar
13. Tober, E.D., Farrow, R.F.C., Marks, R.F., Witte, G., Kalki, K., and Chambliss, D.D., Phys. Rev. Lett. 70, 3943 (1993).Google Scholar
14. Li, Dongqi, Diercks, V., Pearson, J., Jiang, J. S., and Bader, S. D., J. Appl. Phys., 85, 5285 (1999).Google Scholar
15. Chambliss, D. D., Wilson, R. J., and Chiang, S., Phys. Rev. Lett. 66, 1721 (1991).Google Scholar
16. Yu, Chengtao, Li, Dongqi, Pearson, J., and Bader, S.D., Appl. Phys. Lett. 78, 1228 (2001).Google Scholar
17. Yu, Chengtao, Li, Dongqi, Pearson, J., and Bader, S.D., Appl. Phys. Lett. 79, 3848 (2001).Google Scholar
18.For an introduction on spintronics, see Hathaway, K. and Prinz, G., Phys. Today, 48, 24 (1995).Google Scholar
19. Musket, R. G., Mclean, W., Colmenares, C. A., Makowiecki, D. M., and Siekhaus, W. J., Appl. Surf. Sci. 10, 143 (1982).Google Scholar
20. Tersoff, J. and LeGoues, F.K., Phys. Rev. Lett. 72, 3570 (1994).Google Scholar
21. Yu, Chengtao, Pearson, J., and Li, Dongqi, J. Appl. Phys., in press.Google Scholar