Elastic constants of titanium carbide films using surface Brillouin scattering

被引:1
|
作者
Sumanya, C. [1 ,2 ,3 ]
Wamwangi, D. M. [2 ,3 ]
Jakata, K. [2 ,3 ]
Comins, J. D. [2 ,3 ]
机构
[1] Chinhoyi Univ Technol, Inst Mat Sci Proc & Engn Technol, P, P Bag, Chinhoyi 7724, Zimbabwe
[2] Univ Witwatersrand, DST NRF Ctr Excellence Strong Mat, WITS, ZA-2050 Johannesburg, South Africa
[3] Univ Witwatersrand, Mat Phys Res Inst, Sch Phys, WITS, ZA-2050 Johannesburg, South Africa
关键词
Titanium carbide films; Elastic stiffnesses; Surface Brillouin scattering; ACOUSTIC PHONONS; OXIDATION;
D O I
10.1016/j.tsf.2023.139862
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Surface Brillouin scattering (SBS) from surface phonons has been used for determining the dispersion curves of guided acoustic modes propagating along titanium carbide (TiC) films. Dispersion curves have been obtained by varying both the layer thickness and the angle of incidence. Elastic stiffnesses for the TiC on silicon and TiC on silicon carbide systems were determined from a least-squares fitting procedure of the velocity dispersion curves and used to simulate the respective SBS spectra. For each system there is good agreement between measured and calculated SBS spectra.
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页数:7
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