V
V. R. Palkar
Researcher at Tata Institute of Fundamental Research
Publications - 57
Citations - 2906
V. R. Palkar is an academic researcher from Tata Institute of Fundamental Research. The author has contributed to research in topics: Ferroelectricity & Thin film. The author has an hindex of 17, co-authored 57 publications receiving 2784 citations.
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Journal ArticleDOI
Observation of saturated polarization and dielectric anomaly in magnetoelectric BiFeO3 thin films
V. R. Palkar,J. John,R. Pinto +2 more
TL;DR: In this paper, phase-pure magnetoelectric BiFeO3 thin films with controlled oxygen stoichiometry were synthesized using pulsed-laser deposition technique, and the dielectric response study of the films with temperature indicates an anomaly in dielectrics constant e(T), in the vicinity of Neel temperature (∼380°C).
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Magnetoelectricity at room temperature in the Bi 0.9 − x Tb x La 0.1 FeO 3 system
TL;DR: Magnetoelectric compounds with the general formula have been synthesized as mentioned in this paper, which show the coexistence of ferroelectricity and magnetism, possess high dielectric constant and exhibit magnetoelectrous coupling at room temperature.
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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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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.