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Surface Segregation and Order of FeCo Alloy

FeCo 합금의 표면 편석과 질서도

  • Published : 2010.03.01

Abstract

The surface segregation and surface order near the order-disorder phase transition of FeCo alloy was studied through Monte Carlo simulation of an Ising type model Hamiltonian. The results showed that the proper choice of Hamiltonian parameters could reproduce the recent observation of surface order above the transition temperature and that the field term played dominant role.

Keywords

References

  1. J. A. Oyedele and M. F. Collins, “Composition dependence of the order-disorder transition in iron-cobalt alloys”, Phys. Rev. B., Vol. 16, Issue 7, p. 3208, 1977. https://doi.org/10.1103/PhysRevB.16.3208
  2. H. Dosch, L. Mailander, R. L. Johnson, and J. Peisl, “Critical phenomena at the $Fe_3Al(1{\pm}0)$ surface: a glancing angle x-ray scattering study”, Surf. Sci., Vol. 279, Issue 3, p. 367, 1992. https://doi.org/10.1016/0039-6028(92)90563-L
  3. S. Krimmel, W. Donner, B. Nickel, H. Dosch, C. Sutter, and G. Grubel, "Surface segregationinduced critical phenomena at FeCo(001) surfaces", Phys. Rev. Lett., Vol. 78, Issue 20, p. 3880, 1997. https://doi.org/10.1103/PhysRevLett.78.3880
  4. H. Reichert, P. Eng, H. Dosch, and I. K. Robinson, "Thermodynamics of surface segregation profiles at Cu3Au(001) resolved by x-ray scattering", Phys. Rev. Lett., Vol. 74, Issue 11, p. 2006, 1995. https://doi.org/10.1103/PhysRevLett.74.2006
  5. A. Drewitz, R. Leidl, T. W. Burkhardt, and H. W. Diehl, "Surface critical behavior of binary alloys and antiferromagnets: dependence of the universality class on surface orientation", Phys. Rev. Lett., Vol. 78, Issue 6, p. 1090, 1997. https://doi.org/10.1103/PhysRevLett.78.1090
  6. U. Ritschel, "X-ray scattering at FeCo(001) surfaces and the crossover between ordinary and normal transitions", Phys. Rev. B., Vol. 57, Issue 2, p. R693, 1998. https://doi.org/10.1103/PhysRevB.57.R693