Skip to main content Accessibility help
×
Home

Ion Beam Mixing of Alternate Layers Of Ni-Nb and Ni-Cr

  • A. K. Rai (a1), R. S. Bhattacharya (a1), M. H. Rashid (a1) and A. W. McCormick (a1)

Abstract

Alternating layers of Ni and Nb with a total thickness of 1060Å, and Ni and Cr with a total thickness of 840Å were deposited by electron beam evaporation on silicon. The individual layer thicknesses were adjusted in such a way as to obtain 50/50 at% compositions of Ni-Nb and Ni-Cr; the thicknesses were around 100Å for Ni and 170Å for Nb, and 100Å of Ni and 110Å of Cr. The films were bombarded with 350 keV Cr+ ions at a dose of 2 × 10 ions cm. RBS and TEM techniques were used to study the mixing and microstructure. Almost complete mixing and amorphization have been observed for the Ni-Nb system. Ni-Cr film has revealed very little mixing compared to Ni-Nb film and the microstructure remained polycrystalline. Sputter (rf) deposited Ni-Cr film also remained polycrystalline both before and after ion irradiation. The Ni-Cr System appears to be an exception to the structural difference rule for amorphous phase formation by ion irradiation.

Copyright

References

Hide All
1. Rai, A.K., Bhattacharya, R. S., McCormick, A. W., Pronko, P. P. and Khobaib, M.. Appl. Surface Sci. 21, 95 (1985) and Nucl. Inst. Methods B718, 694 (1985).
2. Liu, B.X., Johnson, W. L., Nicolet, M. A. and Lau, S. S. Nucl. Instr. Methods. 209/210. 229 (1983) Appl. Phys. Lett. 42, 45 (1983).
3. Giessen, B. C., Proc. 4th Int. Conf. on Rapidly quenched Metals, Eds., Masumoto, T. and Suzuki, K. Jap. Inst. Metals, Sendai 1, 213 (1982).
Egami, T. and Waseda, Y. J. Non Cryst. Solids 64 113 (1984).
4. Bhattacharya, R. S. and Rai, A. K., J. Appl. Phys. 58, 248 (1985) and 58, 2798 (1985).
5. Rai, A. K., Bhattacharya, R. S. and Rashid, M. H., Proc. of 43rd EMSA Meet. 290 (1985) also Thin Solid Films (To be published).
6. Cheng, Y. T.. Van Rossum, M., Nicolet, M. A. and Johnson, W. L. Appl. Phys. Lett. 45, 185 (1984)
Johnson, et al. Nucl. Instr. Methods B7/8, 657 (1985).
7. Miedema, A. R., Philips Techn. Rev. 36, 217 (1976).

Ion Beam Mixing of Alternate Layers Of Ni-Nb and Ni-Cr

  • A. K. Rai (a1), R. S. Bhattacharya (a1), M. H. Rashid (a1) and A. W. McCormick (a1)

Metrics

Full text views

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

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed