P
Pushan Ayyub
Researcher at Tata Institute of Fundamental Research
Publications - 173
Citations - 5546
Pushan Ayyub is an academic researcher from Tata Institute of Fundamental Research. The author has contributed to research in topics: Thin film & Nanocrystalline material. The author has an hindex of 36, co-authored 173 publications receiving 5130 citations. Previous affiliations of Pushan Ayyub include University of Florida & Institute of Physics, Bhubaneswar.
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Size-induced diffuse phase transition in the nanocrystalline ferroelectric PbTiO 3
TL;DR: In this article, a detailed study of the size dependence of the ferroelectric transition in an ensemble of nanoparticles produced by coprecipitation was performed. But the phase transition was monitored by dielectric measurements, variable temperature x-ray diffraction, and differential scanning calorimetry (DSC).
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Effect of crystal size reduction on lattice symmetry and cooperative properties.
TL;DR: In this article, size-induced changes in the crystal symmetry have been observed in partially covalent oxides, and it was shown that the size dependence of many important physical properties can be attributed directly to the lattice distortion.
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Effect of the size-induced structural transformation on the band gap in CdS nanoparticles
TL;DR: In this paper, the first attempt at relating the size-induced transformation from a hexagonal to a cubic structure in CdS nanoparticles to a change in the band gap was made.
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Preparation of nanoparticles of silver halides, superconductors and magnetic materials using water-in-oil microemulsions as nano-reactors
TL;DR: In this article, the authors reviewed several articles pertaining to the synthesis of nanoparticles in micro-emulsions and described in some detail their research efforts in the past decade in the field of synthesis of nano-reactors using water-in-oil micro emulsions as nano- reactors.
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Size-induced structural phase transitions and hyperfine properties of microcrystalline Fe2O3
TL;DR: In this article, a succession of crystal-size-induced structural transitions was observed, which were related to the increase in the unit-cell volume that occurs as the particle size is decreased.