1Department of Physics, Manipur University, Imphal 795003, India
2Inter-University Accelerator Centre, New Delhi 110067, India
3Department of Physics, Punjab University, Chandigarh 160014, India
Adv. Mater. Lett., 2014, 5 (4), pp 223-228
DOI: 10.5185/amlett.2013.7510
Publication Date (Web): Feb 16, 2014
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100 MeV Ag ions have been used to study the swift heavy ion (SHI) induced modification in Te/Bi bilayer system. The samples were analysed using Rutherford backscattering spectroscopy (RBS), Atomic force microscopy (AFM) and X-ray diffractometer (XRD). The elemental depth study with RBS results show a strong mixing between the top Te layer and the underlying Bi layer on irradiation. Surface roughness as calculated by AFM is found to increase from 8 to 30 nm on irradiation for the fluence 3x1013 ions/cm2. XRD results confirm the formation of Bi-Te alloy phases on mixing and are expected to be formed due to the interfacial reaction taking place within the molten ion tracks. Ion beam mixing has the potential to induce the formation Bi-Te alloy thin films which are the promising candidate for thermoelectric applications near room temperature.
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