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N Gayathri
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Volume 30 Issue 4 August 2007 pp 345-348 Thermal Properties
Effect of nickel substitution on thermal properties of Na0.9CoO2
J Meena Devi N Gayathri A Bharathi K Ramachandran
We report on the effect of nickel substitution in Na0.9CoO2 by examining their thermal properties at room temperature. Experimental results indicate that thermoelectric efficiency is enhanced upon nickel substitution in sodium cobaltate.
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Volume 34 Issue 3 June 2011 pp 507-513
P S Chowdhury P Mukherjee N Gayathri M Bhattacharya A Chatterjee P Barat P M G Nambissan
Zr–1Nb samples were irradiated with 116 MeV O5+ ions at different doses ranging from 5 × 1017 to 8 × 1018 O5+/m2. X-ray diffraction line profile analysis was performed to characterize the microstructural parameters of these samples. Average domain size, microstrain and dislocation density were estimated as a function of dose. An anomaly was observed in the values of these parameters at a dose of 2 × 1018 O5+/m2. Positron annihilation spectroscopy was used to determine the existence and nature of vacancy clusters in the samples. Isochronal annealing was carried out for a sample to study the evolution of defect clusters.
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Volume 34 Issue 5 August 2011 pp 1113-1117
On statistical behaviour of stress drops in Portevin–Le Chatelier effect
A Chatterjee P Mukherjee N Gayathri P Barat Arnab Barat A Sarkar
The Portevin–Le Chatelier (PLC) effect is a kind of plastic instability observed in many dilute alloys when deformed at certain ranges of strain rate and temperature. In this paper we present a comprehensive statistical analysis of the observed experimental data obtained during PLC effect and establish that the occurrence probability of the stress drops in the dynamical process responsible for PLC effect is Poisson in nature.
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Bulletin of Materials Science
Volume 44, 2021
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Continuous Article Publishing mode
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Bulletin of Materials Science | News
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020 -
Editorial Note on Continuous Article Publication
Posted on July 25, 2019Click here for Editorial Note on CAP Mode
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