AMPC  Vol.2 No.2 , June 2012
The Study of the Symmetry in the Surface Structure of a Quasicrystal Al-Pd-Mn
ABSTRACT
In this paper, we are going to study the surface structure and existing symmetry by simulation of a quasicrystal Al-Pd- Mn. Quasicrystals have unique properties in their own structure. In the surface structure generally we should pay attention to two subjects. Firstly, what kind of atoms have situated on the surface and secondly the form of collecting atoms by each other sides. Usually, there are different ways for answer to these questions. In this study, Low Energy Ion Scattering (LEIS) technique has been applied. We select a representative cell by using gained information from Low Energy Electron Diffraction (LEED) technique, and give the information to the SABRE computer program. This computer program has been run for azimuthally angles 0 - 180 degrees in the intervals of 9 degree and its output has been analyzed for gaining azimuthally scan. The azimuthally scan shows the existing of a symmetry 72 degree on the surface of this quasicrystal.

Cite this paper
S. Feridoun, H. Sanaz and T. Mohammad Hossein, "The Study of the Symmetry in the Surface Structure of a Quasicrystal Al-Pd-Mn," Advances in Materials Physics and Chemistry, Vol. 2 No. 2, 2012, pp. 82-84. doi: 10.4236/ampc.2012.22014.
References
[1]   D. Shechtman, I. Blech, D. Gratias and J. W. Cahn, “Metallic Phase with Long-Range Orientation Order and No Translational Symmetry,” Physical Review Letters, Vol. 53, No. 20, 1984, pp. 1951-1953.

[2]   F. Samavat, M. J. Gladys, C. J. Jenks, T. A. Lograsso, B. V. King and D. J. O’Connor, “Study of Preferen-tial Sputtering and Segregation Effects on the Surface Composition of Al-Pd-Mn Quasicrystals,” Surface and Interface Analysis, Vol. 40, No. 3-4, 2008, pp. 433-435. doi:10.1002/sia.2769

[3]   F. Samavat, M. J. Gladys, C. J. Jenks, T. A. Lograsso, B. V. King and D. J. O’Connor, “Surface Layer Self Diffusion in Icosahedra Al-Pd-Mn Quasicrystals,” Surface Science, Vol. 601, No. 24, 2007, pp. 5678-5682. doi:10.1016/j.susc.2007.06.043

[4]   M. Gierer, M. A. Van Hove, A. I. Goldman, Z. Shen, S. L. Chang, C. J. Jenks, C. M. Zhang and P. A. Thiel, “Structural Analysis of the Fivefold Symmetric Surface of the Al70Pd21Mn9 Quasicrystal by Low Energy Electron Diffraction,” Physical Reviews Letters, Vol. 78, No. 3, 1997, pp. 467-470. doi:10.1103/PhysRevLett.78.467

[5]   M. Gierer, M. A. Van Hove, A. I. Goldman, Z. Shen, S. L. Chang, P. J. Pinhero, C. J. Jenks, J. W. Anderegg, C. M. Zhang and P. A. Thiel, “Fivefold Surface of Quasicrystalline AlPdMn: Structure Determination Using Low-Energy- Electron Diffraction,” Physics Review B, Vol. 57, No. 13, 1998, pp. 7628-7641. doi:10.1103/PhysRevB.57.7628

[6]   D. P. Smith, “Scattering of Low-Energy Nobel Gas Ions from Metal Surface,” Journal of Applied Physics, Vol. 38, No. 1, 1968, pp. 340-347. doi:10.1063/1.1708979

[7]   F. Samavat, B. V. King and D. J. O’conner, “Low Energy Ion Scattering,” Surface Review and Letters, Vol. 14, No.1, 2007, pp. 31-41. doi:10.1142/S0218625X07009001

 
 
Top