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Studies of structural and mechanical properties of AlGaN thin films on nano-SiC/Si hybrid substrates
Grashchenko A. S.
1, Kukushkin S. A.
1, Sharofidinov S. S.
1,2
1Institute for Problems in Mechanical Engineering of the Russian Academy of Sciences, St. Petersburg, Russia
2Ioffe Institute, St. Petersburg, Russia
2Ioffe Institute, St. Petersburg, Russia
Email: asgrashchenko@bk.ru, sergey.a.kukushkin@gmail.com, shukrillo71@mail.ru
An experimental study of the structural characteristics of the surface and the parameters of hardness and elastic modulus of thin AlGaN films grown on nano-SiC/Si hybrid substrates was carried out. AlGaN layers on nano-SiC on Si with orientations (001), (011) and (111) have been investigated using atomic force microscopy and naation method. It is shown that the orientation of the Si substrate has a significant effect on the surface structure of AlGaN films and the elastic modulus parameter of AlGaN near the surface. The surface roughness and structural characteristics of AlGaN layers grown on nano-SiC on Si hybrid substrates have been determined. The elastic modulus parameters of AlGaN films near the surface and in the film volume have been measured. The hardness parameters of AlGaN thin films on nanoSiC on Si were experimentally determined. Keywords: thin films, AFM, naation, heterostructures, nano-SiC/Si, AlGaN.
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