X-RAY DIFFUSE SCATTERING FROM Al70Ni15Co15

H. Abe, Y. Matsuo,1 K. Ohshima,2

Department of Materials Science and Engineering, National Defense Academy, Yokosuka 239, Japan

1Department of Physics, Nara Women's University, Kitauoya-higashi-machi, Nara 630, Japan

2Institute of Applied Physics, University of Tsukuba, Tsukuba 305, Japan

Proc. 6-th International Conference on Quasicrystral, 371 (1997).

The difference between (s1+s2)-type and s2-type of superlattice structures were connected with the intensity distributions of X-ray diffuse scattering. Moreover, the diffraction peaks from (s1+s2)-type showed the temperature dependence in their peak positions and intensity distribution of the diffuse scattering at low-temperature. It is considered that the differences in the intensity distribution of the diffuse scattering is originated from the coupling between phonon and phason.

Fig.1 (a)

Two-dimensional distribution around 21120 reflection at room temperature before cooling (ANC2).
Fig.1 (b)

Two-dimensional distribution around 21120 reflection at 56 K (ANC1).
Fig.1 (c)

Two-dimensional distribution around 21120 reflection at room temperature after cooling (ANC1).
Fig.2

Two-dimensional distribution around 21120 reflection at room temperature (ANC2).

References

1. K. Hiraga et al., Mater. Trans. JIM 32, 308 (1991).

2. K. Edagawa et al., Phil. Mag. Lett. 66, 19 (1992).

3. K. Edagawa et al., Phil. Mag. Lett. 69, 227 (1994).

4. S. Ritsch et al., Phil. Mag. A 71, 671 (1995).

5. S. Ritsch et al., Phil. Mag. Lett. 74, 99 (1996).

6. K. Hradil et al., Phil. Mag. Lett. 71, 199 (1995).

7. M. Kalning et al., Phil. Mag. Lett. 71, 341 (1995).

8. K. Hradil et al., Phil. Mag. B 71, 955 (1995).

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Department of Materials Science and Engineering
National Defense Academy

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