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P T Deshmukh
Articles written in Bulletin of Materials Science
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Volume 26 Issue 6 October 2003 pp 639-642 Glasses and Ceramics
Optical properties of lead–bismuth cuprous glasses
P T Deshmukh D K Burghate V S Deogaonkar S P Yawale S V Pakade
The optical transmission and absorption spectra in UV–VIS were recorded in the wavelength range 350–800 nm for different glass compositions in the system (CuO)𝑥(PbO)50–𝑥(Bi2O3)50 (𝑥 = 2.5, 5.0, 7.5, 10.0, 12.5, 15.0, 20.0). Absorption coefficient (𝛼), optical energy gap (𝐸opt), refractive index (𝑛D), optical dielectric constant ($\varepsilon_{\infty}^{′}$), measure of extent of band tailing (𝛥 𝐸), constant (𝛽) and ratio of carrier concentration to the effective mass (𝑁/𝑚*) have been reported. The effects of compositions of glasses on these parameters have been discussed. It has been indicated that a small compositional modification of the glasses lead to an important change in all the optical properties including non-linear behaviour. The optical parameters were found to be almost the same for different glasses in the same family.
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Volume 30 Issue 1 February 2007 pp 51-56 Polymers
Electrical conductivity of polyaniline doped PVC–PMMA polymer blends
S H Deshmukh D K Burghate V P Akhare V S Deogaonkar P T Deshmukh M S Deshmukh
The electrical conductivity of polyaniline doped polyvinylchloride (PVC) and poly(methyl methacrylate) (PMMA) thin films has been measured by studying the 𝐼–𝑉 characteristics at various temperatures in the range 323–363 K. The results are presented in the form of 𝐼–𝑉 characteristics and analysis has been made by interpretation of Poole–Frenkel, Fowler–Nordheim, Schottky ln(𝐽) vs 𝑇 plots, Richardson and Arrhenius plots. The analysis of these results suggests that Schottky and Richardson mechanisms are primarily responsible for the observed conduction.
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Bulletin of Materials Science
Volume 44, 2021
All articles
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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