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Abstrakty
Longitudinal and shear ultrasonic wave velocities were measured in the ternary compounds Bi2(Te_1-x Se_x)_3 (0 ≤x ≤1), using pulse echo technique. Measurements were carried out at 4 MHz frequency and at room temperature. Elastic moduli and acoustic impedance have been calculated. The results indicate that these parameters are influenced by the increased addition of selenium from x = 0 to 1.
Wydawca
Czasopismo
Rocznik
Tom
Strony
715--725
Opis fizyczny
Bibliogr. 34 poz., tab., wykr.
Twórcy
autor
autor
autor
- )Ultrasonic Laboratory, National Institute for Standards Tersa Str., P.O. Box 136, El-Haram, El-Giza 12211, Egypt, mohamed_s_gaafar@hotmail.com
Bibliografia
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- [2] Mathews J.W. [Ed.], Epitaxial Growth, Academic Press, New York 1975.
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- [8] Vandersande J.W., Fleurial J.P., Proc. 15th Int. Conf. on Thermoelectricity (Pasadena, C A, March), ed. Caillat (1996), p. 252.
- [9] Shafai C., Brett M.J., Optimization of Bi2Te3 thin films for microintegrated Peltier heat pumps, J. Vac. Sci. Technol. A, 15, 2798 (1997).
- [10] Min G., Rowe D.M., Cooling performance of integrated thermoelectric microcooler, Solid State Electronics, 43, 923 (1999).
- [11] Yim W.M., Rosi F.D., Compound tellurides and their alloys for peltier cooling-A review, Solid State Electronic 15, 1121 (1972).
- [12] Caillat T., Carle M., Pierrat P., Scherrer H., Scherrer S., Thermoelectric properties of (BixSb1¡x)2Te3 single crystal solid solutions grown by the T.H.M. method, J. Phys. Chem. Solids, 53, 1121 (1992).
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- [16] Lopez-Otero A., The dependence of the grain size of continuous epitaxial films on the growth conditions, J. Cryst. Growth, 42, 157 (1977).
- [17] Gaafar M.S., El-Sayad E.A., Marzouk S.Y., Ultrasonic study of CuxAg1¡xInTe2 bulk material, Archives of Acoustics, 33, 3, 363-372 (2008).
- [18] Krieger M., Sigg H., Reinhart F.K., Elastic constant C11 of AlxGa1¡xAs determined by near infrared Brillouin scattering, Solid State Communications, 88, 267 (1993).
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- [20] Soliman L.I., Farag I.S., Nassary M.M., Shaban H.T., Aly S.S., Preparation and Characterization of Thermally Evaporated Bi2(Te1¡xSex)3Thin Films, Fizika A, sent for publication.
- [21] Varshneya A.K., Fundamentals of Inorganic Glasses, Acad. Press, New York 1994.
- [22] Khalifa F.A., El-Hadi Z.A., Moustaffa F.A., Hassan N.A., Density and molar volume of some sodium silicate, lead borate and lead silicate glasses, Indian J. Pure Appl. Phys., 27, 279 (1989).
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- [26] Moustafa A.M., El-Sayad E.A., Sakr G.B., Crystal structure refinement of CuxAg1¡xInTe2 bulk material determined from X-ray powder diffraction data using the Rietveld method, Cryst. Res. Technol., 39, 266 (2004).
- [27] Grzeta-Plenkovic B., Santic, Crystal data for CuGaxIn1¡xTe2, J. Appl. Crystallogr., 16, 576 (1983).
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- [32] Bridge B., Patel N.D., Waters D.N., On the elastic constants and structure of the pure inorganic glasses, Phys. Stat. Sol. (a), 77, 655 (1983).
- [33] Anderson O.L., Physical Acoustics, Warren P. Mason ed., Academic Press, New York, (III) B, 45 (1965).
- [34] Wankhede D.S., Wankhede N.N., Lande M.K., Arbad B.R., Densities and ultrasonic velocities of some oxygen containing compounds, Journal of Molecular Liquids, 138, 124 (2008).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BUS8-0019-0037