6 papers · 1 filter
Radiation tolerance: Nano triumphs bulk
Parswajit Kalita, Santanu Ghosh, Gaëlle Gutierrez +4
Materials are subjected to energetic particles in a number of radiation environments,and are hence prone to undesirable (radiation) damage.We report here the superiority of the nan…
Oxygen vacancy mediated cubic phase stabilization at room temperature in pure nano-crystalline Zirconia films: A combined experimental and first-principles based investigation
Parswajit Kalita, Shikha Saini, Parasmani Rajput +6
We report the formation of cubic phase, under ambient conditions, in thin films of Zirconia synthesized by electron beam evaporation technique. The stabilization of the cubic phase…
Assessing thermal spike model of swift heavy ion-matter interaction via PdNi/Si interface mixing
Paramita Patra, S. A. Khan, M. Bala +2
Thermal spike model (TSM) is presently a widely accepted mechanism of swift heavy ion (SHI) - matter interaction. It provides explanation to various SHI induced effects including m…
Sign Reversal and Tunability of Exchange Bias in Nanoscale AuFe Alloy Film: A New Material for Spintronic Application
Compesh Pannu, Santanu Ghosh, Pankaj Srivastava +5
We report here sign reversal and tunability of exchange bias in AuFe cosputtered films of thickness about 63 nm. As deposited film exhibits exchange bias effect at room temperature…
Enhanced radiation tolerance of YSZ at high temperature against swift heavy ions: key role of interplay between material microstructure and irradiation temperature
Parswajit Kalita, Santanu Ghosh, Udai B. Singh +6
Yttria stabilized Zirconia (YSZ) pellets with different crystallite sizes were irradiated with 80 MeV Ag ions at room temperature and 1000 K to understand the role of crysta…
Swift heavy ion irradiation induced structural phase transitions in BaTiO3: An in-situ x-ray diffraction study
Ravindra Singh Solanki, Jay Prakash Patel, Chandana Rath +3
There is considerable controversy about swift heavy ion (SHI) irradiation induced displacive phase transitions in thermally insulating oxides. We present here unambiguous evidence…