Alignment of self-assembled magnetic nanostructures : Co dot chains and stripes on grooved Ru(0001).
We have deposited 0-60 nm Co with a wedge-shaped thickness gradient onto a grooved Ru(0001) substrate by means of molecular-beam epitaxy at 350 C. The resultant epitaxial Co island (dot) structure was characterized ex situ using atomic- and magnetic-force microscopy and the magneto-optic Kerr effect. The dots self-assemble with {approx}70-500 nm diameter, {approx}1-7 nm height, and align into linear chains along the grooves with spacings in the chains to decrease from {approx}1 {mu}m until they form continuous stripes, depending on dosage and groove structure. The dots have magnetic single domains with in-plane easy axes.
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- SC
- DOE Contract Number:
- AC02-06CH11357
- OSTI ID:
- 949373
- Report Number(s):
- ANL/MSD/JA-40384
- Journal Information:
- Appl. Phys. Lett., Journal Name: Appl. Phys. Lett. Journal Issue: 23 ; Dec. 3, 2001 Vol. 79; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- ENGLISH
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