IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Magnetic Interfaces and Nanostructures Thursday Sessions
       Session MI-ThP

Paper MI-ThP9
Ion-beam Modification of the Physical Properties and the Structure of Fe/Si Multilayered Films

Thursday, November 1, 2001, 5:30 pm, Room 134/135

Session: Magnetic Thin Films & Surfaces Poster Session
Presenter: Y.P. Lee, Hanyang University, Korea
Authors: Y.P. Lee, Hanyang University, Korea
J.S. Park, Hanyang University, Korea
Y.V. Kudryavtsev, Institute of Metal Physics, Ukraine
J. Dubowik, Institute of Molecular Physics, Poland
B. Szymanski, Institute of Molecular Physics, Poland
J.Y. Rhee, Hoseo University, Korea
G.S. Chang, Yonsei University, Korea
Correspondent: Click to Email
The influence of ion-beam mixing (IBM) on the strucure, and the magnetic, magneto-optical and optical properties of Fe/Si multilayered films (MLF) was investigated. The IBM was performed with Ar@super +@ ions of an energy of 80 keV and a dose of 1.5 X 10@super 16@ Ar@super +@/cm@super 2@. It was shown that the IBM destroys the layered structure of the MLF down to a depth of about 110 - 150 nm and leads to the formation of a new phase which is characterized to possess a perfect crystalline structure, a low coercivity and a Curie temperature of about 550 K. It is suggested that the phase formed by the IBM is a metastable Fe@sub 2@Si silicide with a B2 type of structure. An annealing of the ion-beam mixed Fe/Si MLF at 720 K destroys further the undisturbed layered structure at the bottom and also leads to a decomposition of the Fe@sub 2@Si phase into a metastable magnetically-hard Fe@sub 5@Si@sub 3@ silicide and, presumably, Fe@sub 3@Si.