Temperature Effects on Surface Acoustic Wave Velocities in TiB2 Materials

 

M. Doghmane1, 2, F. Hadjoub1,3, I. Hadjoub1,4, A. Doghmane1*

1Laboratoire des Semi-Conducteurs, Département de Physique, Faculté des Sciences, Université Badji Mokhtar, BP 12, Annaba, DZ-23000, Algérie, Phone/Fax: +213 38 87 27 74, E-mail : lsc_contact@yahoo.fr

2Département  des Sciences Exactes, Université du 8 mai 1945, BP. 401, Guelma, DZ-24000, Algeria.

3Faculté de Médecine, Université Badji-Mokhtar, Annaba, DZ-23000, Algeria

4Département  des Sciences Fondamentales, Université 20. 08. 1955, Skikda, BP 26, DZ-21000 Algeria.

* Corresponding author. E-mail: *a_doghmane@yahoo.fr

Received: 31 October 2006; revised version accepted: 07 May 2008

 

Abstract

     In this work, we investigate propagating surface acoustic wave velocities as well as their dependence on temperatures, T, for Titanium diboride. To do so, we calculated longitudinal, VL and transversal, VT, velocities at different T. It was found, for T < 1000°C, that VL = 11405 T - 0.18 and VT = 7566 T - 0.13. This investigation was also extended to Rayleigh velocities, VR, via the determination of periodic acoustic material signatures which were spectrally analysed. Hence, an analytical formula with similar dependence was also deuced: VR = 6787 - 0.117 T. The importance of these results lies in the prediction of elastic behaviour of such a material when used in various applications that require different ranges of temperatures.

 

Keywords:  TiB2; Acoustic velocities; Temperature effects; Elastic properties.

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