AVS 51st International Symposium
    Magnetic Interfaces and Nanostructures Tuesday Sessions
       Session MI-TuP

Paper MI-TuP2
Fabrication and Magnetic Property of Co Platelets On Si (111) Surfaces

Tuesday, November 16, 2004, 4:00 pm, Room Exhibit Hall B

Session: Poster Session
Presenter: J.L. Li, University of Texas at Austin
Authors: M.H. Pan, The Chinese Academy of Science, China
H. Liu, The Chinese Academy of Science, China
J.Z. Wang, The Chinese Academy of Science, China
J.F. Jia, The Chinese Academy of Science, China
Q.-K. Xue, The Chinese Academy of Science, China
J.L. Li, University of Texas at Austin
S.Y. Qin, University of Texas at Austin
C.-K. Shih, University of Texas at Austin
Correspondent: Click to Email
Self-organized Co platelets with uniform size and shape were fabricated on Si(111)-7x7 surfaces covered with identical Al nanocluster arrays. The Al nanocluster array not only suppresses reaction between Si and Co, but also enables formation of well-defined Co nano-platelets. These platelets appear as equilateral triangles with fixed orientation and two-monolayer "magic" thickness, and the area of individual plates is quantized in N square units of halves of the 7x7 unit cells. Despite their small volume (a few nm3), these magnetic nanoplateles exhibit unusually high blocking temperature (>100 K).