• Sohrab Sanjabi

      Articles written in Bulletin of Materials Science

    • Property change during nanosecond pulse laser annealing of amorphous NiTi thin film

      S K Sadrnezhaad Noushin Yasavol Mansoureh Ganjali Sohrab Sanjabi

      More Details Abstract Fulltext PDF

      Nanosecond lasers of different intensities were pulsed into sputter-deposited amorphous thin films of near equiatomic Ni/Ti composition to produce partially crystallized highly sensitive 𝑅-phase spots surrounded by amorphous regions. Scanning electron microscopy having secondary and back-scattered electrons, field emission scanning electron microscopy, optical microscopy and X-ray diffraction patterns were used to characterize the laser treated spots. Effect of nanosecond pulse lasering on microstructure, morphology, thermal diffusion and inclusion formation was investigated. Increasing beam intensity and laser pulse-number promoted amorphous to 𝑅-phase transition. Lowering duration of the pulse incidence reduced local film oxidation and film/substrate interference.

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      Posted on October 12, 2020

      Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
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      Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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      Posted on July 25, 2019

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