Phonon Dispersion in Amorphous Ni-Alloys

• Authors: A. Vora
• Languages of publication: EN

Abstracts

EN

The well-known model potential is used to investigate the longitudinal and transverse phonon dispersion curves for six Ni-based binary amorphous alloys, viz. Ni_{31}Dy_{69}, Ni_{33}Y_{67}, Ni_{36}Zr_{64}, Ni_{50}Zr_{50}, Ni_{60} Nb_{40}, and Ni_{81}B_{19}. The thermodynamic and elastic properties are also computed from the elastic limits of the phonon dispersion curves. The theoretical approach given by Hubbard-Beeby is used in the present study to compute the phonon dispersion curves. Five local field correction functions proposed by Hartree, Taylor, Ichimaru-Utsumi, Farid et al. and Sarkar et al. are employed to see the effect of exchange and correlation in the aforesaid properties.

Keywords

EN

63.50.+x; 65.60.+a

Discipline

• 65.60.+a: Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2007
• Volume: 111
• Issue: 6
• Pages: 859-871

Dates

published

2007-06

received

2007-02-06

(unknown)

2007-04-10

Contributors

author

A. Vora

• Parmeshwari 165, Vijaynagar Area, Hospital Road, Bhuj-Kutch, 370 001, Gujarat, India

References

• 1. Arun Pratap, Deepika Bhandari, N.S. Saxena, M.P. Saksena, Ind. J. Pure Appl. Phys., 32, 128, 1994
• 2. N. Gupta, K.C. Jain, N.S. Saxena, Phys. Status Solidi B, 176, 81, 1993
• 3. J. Hubbard, J.L. Beeby, J. Phys. C, Solid State Phys., 2, 556, 1969
• 4. S. Takeno, M. Goda, Prog. Theor. Phys., 45, 331, 1971; Prog. Theor. Phys., 47, 790, 1972
• 5. A.B. Bhatia, R.N. Singh, Phys. Rev. B, 31, 4751, 1985
• 6. A.M. Vora, J. Non-Cryst. Solids, 352, 3217, 2006
• 7. A.M. Vora, Chinese Phys. Lett., 23, 1872, 2006
• 8. A.M. Vora, J. Mater. Sci., 42, 935, 2007
• 9. N.W. Ashcroft, Phys. Lett., 23, 48, 1966
• 10. W.A. Harrison, Elementary Electronic Structure, World Scientific, Singapore 1999
• 11. R. Taylor, J. Phys. F, Met. Phys., 8, 1699, 1978
• 12. S. Ichimaru, K. Utsumi, Phys. Rev. B, 24, 7385, 1981
• 13. B. Farid, V. Heine, G. Engel, I.J. Robertson, Phys. Rev. B, 48, 11602, 1993
• 14. A. Sarkar, D.S. Sen, S. Haldar, D. Roy, Mod. Phys. Lett. B, 12, 639, 1998
• 15. J.M. Wills, W.A. Harrison, Phys. Rev. B, 28, 4363, 1983
• 16. Ch. Hausleitner, J. Hafner, J. Phys., Condens. Matter, 2, 6651, 1990
• 17. Ch. Hausleitner, J. Hafner, Phys. Rev. B, 42, 5683, 1990
• 18. Ch. Hausleitner, J. Hafner, Phys. Rev. B, 47, 5689, 1993
• 19. J.L. Bretonnet, A. Derouiche, Phys. Rev. B, 43, 8924, 1990
• 20. M.F. Thorpe, J. Non-Cryst. Solids, 57, 355, 1983

Identifiers

DOI

10.12693/APhysPolA.111.859