Phonon dynamics of glassy copper alloys

Abstract

The well recognized model potential is used to investigate the phonon properties for five glassy Copper alloys viz. Cu₅₇Zr₄₃, Cu₆₀W₄₀, Cu₃₃Y₆₇, Cu₄₃Ti₅₇ and Cu₆₆Ti₃₄. The thermodynamic and elastic properties are also computed from the elastic limits of the phonon dispersion curves (PDC). Three theoretical approaches given by Hubbard-Beeby (HB), Takeno-Goda (TG) and Bhatia-Singh (BS) are used in the present study to compute the PDC. Five local field correction functions proposed by Hartree (H), Taylor (T), Ichimaru-Utsumi (IU), Farid et al. (F) and Sarkar et al. (S) are employed to see the effect of exchange and correlation in the aforesaid properties.

Keywords

pseudopotential / pair potential / phonon dispersion curves (PDC) / glassy copper alloys

References

[1] Vora, A. M.; Patel, M. H.; Gajjar, P. N.; Jani, A. R., Solid State Phys.2003, 46, 315

[2] Gajjar, P. N.; Vora, A. M.; Jani, A. R., In: Proceedings of the 9th Asia Pacific Physics Conference, Vietnam, The Gioi Publication: Hanoi (2006), 429.

[3] Vora, A. M., Chin. Phys. Lett.2006, 23, 1872-1875

[4] Vora, A. M., J. Mater. Sci.2007, 42, 935-940

[5] Vora, A. M., Acta Phys. Pol. A2007, 111, 859

[6] Vora, A. M., J. Non-Cryst. Solids2006, 352, 3217-3223

[7] Vora, A. M., Front. Mater. Sci.2007, 1, 366-378

[8] Vora, A. M., FIZIKA A2007, 16, 187

[9] Vora, A. M., Rom. J. Phys.2008, 53, 517

[10] Agarwal, P. C.; Aziz, K. A.; Kachhava, C. M., Acta Physiol. Hung.1992, 71, 233Phys. Stat. Sol. (b)178, 303 (1993).

[11] Bhatia, A. B.; Singh, R. N., Phys. Rev. B1985, 31, 4751-4758

[12] Gupta, N.; Jain, K. C.; Saxena, N. S., Phys. Status Solidi1993, 176, 81-90 (b)

[13] Engelhardt, M. A.; Jaswal, S. S.; Sellmyer, D. J., Phys. Rev. B1991, 44, 12671-12679

[14] Harrison, W. A., Elementary Electronic Structure, World Scientific: Singapore 1999.

[15] Taylor, R., J. Phys. F Met. Phys.1978, 8, 1699-1702

[16] Ichimaru, S.; Utsumi, K., Phys. Rev. B1981, 24, 7385-7388

[17] Farid, B.; Heine, V.; Engel, G.; Robertson, I. J., Phys. Rev. B1993, 48, 11602-11621

[18] Sarkar, A.; Sen, D. S.; Haldar, S.; Roy, D., Mod. Phys. Lett. B1998, 12, 639

[19] Hubbard, J.; Beeby, J. L., J. Phys. C Solid State Phys.1969, 2, 556-571

[20] Takeno, S.; Goda, M., Prog. Theor. Phys.1971, 45, 331-352

[21] Takeno, S.; Goda, M., Prog. Theor. Phys.1972, 47, 790-806

[22] Bhatia, A. B.; Singh, R. N., Phys. Rev. B1985, 31, 4751-4758

[23] Wills, J. M.; Harrison, W. A., Phys. Rev. B1983, 28, 4363-4373

[24] Kovalenko, N. P.; Krasny, Y. P., Physica B1990, 162, 115-121

[25] Bretonnet, J. L.; Derouiche, A., Phys. Rev. B1990, 43, 8924-8929

[26] Kobayashi, S.; Takeuchi, S., J. Phys. C Solid State Phys.1980, 13, L969

[27] Lamparter, P.; Steeb, S.; Grallath, E., Z. Naturforsch. C1983, 38a, 1210

[28] Suck, J.B.; Rudin, H., in Glassy Metals-II: Atomic Structure and Dynamics, Electronic Structure, Magnetic Properties, Eds. Güntherodt, H.–J. and Beck, H. Springer-Verlag: Berlin,1983, p. 217

[29] Thorpe, M. F., J. Non-Cryst. Solids1983, 57, 355-370

[30] Moody, D. E.; Pg, T. K., In: Physics of Transition Metals, Institute Physics Conference Serial No. 55, Chap.13, Ed. Rhodes, P., The Institute Of Physics: Bristol and London, 1981, 631

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