Author
Santiranjan Shannigrahi
Other affiliations: Bose Corporation, Sony Broadcast & Professional Research Laboratories, Bose Institute
Bio: Santiranjan Shannigrahi is an academic researcher from Agency for Science, Technology and Research. The author has contributed to research in topics: Dielectric & Ferroelectricity. The author has an hindex of 25, co-authored 85 publications receiving 2122 citations. Previous affiliations of Santiranjan Shannigrahi include Bose Corporation & Sony Broadcast & Professional Research Laboratories.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the authors rigorously review various types of glass coatings and glazing systems including conventional, advanced, and smart and highlight their paramount features, and discuss the possibility of employing different window technologies for hot, cool, and temperate climates.
281 citations
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TL;DR: In this article, the development of energy saving transparent heat regulating (THR) materials and coating for energy saving window applications has been discussed, and detailed analysis of growth of continuous and thin metal layer influence of the seed layer (germanium and nickel) and doping on the growth mechanism of thin metal have been discussed.
117 citations
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TL;DR: In this paper, multiferroic thin films with the general formula BiFe1−xScxO3 (x=0.5mol%) were synthesized on Pt∕Ti ∕SiO2∕Si substrates through a sol-gel deposition method.
Abstract: Multiferroic thin films with the general formula BiFe1−xScxO3 (x=0.0, 0.1, 0.3, and 0.5mol%) (BFS) were synthesized on Pt∕Ti∕SiO2∕Si substrates through a sol-gel deposition method. From the x-ray diffraction (XRD) analysis, it was observed that the unit cell volume increased upon Sc doping up to 0.3mol%. Impure phase appeared for the BFS (Sc: 0.5mol%) films. Leakage current, ferroelectric, and magnetic properties were also found to improve for Sc doping up to 0.3mol%. Room temperature magnetic coercive field for in-plane orientation of films showed the lowest value for BFS (Sc: 0.3mol%) films, which indicates that BFS (Sc: 0.3mol%) films were more magnetically soft. Room temperature value of the magnetodielectric effect in the presence of magnetic field of 8kOe was found to have maximum of 3.36% for the BFS (Sc: 0.3mol%) films. From the x-ray photoelectron spectroscopy measurements, it was observed that the Fe has mixed valency states of 2+ and 3+. The ratio of Fe2+ and Fe3+ was found to decrease slightly...
113 citations
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TL;DR: In this article, a large photoinduced voltage of 7 V was obtained with an in-plane poled ferroelectric thin film having a composition of WO3 modified Pb0.97La0.03(Zr0.52Ti0.48)O3 (PLWZT) under ultraviolet (UV) illumination for about 80 s.
Abstract: A large photoinduced voltage of 7 V was obtained with an in-plane poled ferroelectric thin film having a composition of WO3 modified Pb0.97La0.03(Zr0.52Ti0.48)O3 (PLWZT), under ultraviolet (UV) illumination for about 80 s. By poling the ferroelectric film along the surface plane through pairs of interdigital electrodes, the interelectrode distance constraint on the voltage magnitude arising from the small film thickness was broken. Our experimental results showed that both the direction and magnitude of the photovoltaic output could be tuned with the poling electric field. The dependence of the photoinduced voltage on light wavelength, light intensity, and the gap of the interdigital electrode were investigated. The advantages of the photovoltaic configuration on the basis of an in-plane poled ferroelectric thin film were analyzed.
98 citations
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TL;DR: In this article, the electrocaloric properties of PbZr0.52Ti0.48O3 epitaxial films and 0.7PMN-0.3PT single crystals are measured and demonstrated enhanced low temperature refrigeration at morphotropic phase boundary compositions.
Abstract: The electrocaloric properties of PbZr0.52Ti0.48O3 (PZT) epitaxial films and 0.7Pb(Mg1/3Nb2/3)O3-0.3PbTiO3 (0.7PMN-0.3PT) single crystals are measured and demonstrated enhanced low temperature refrigeration at morphotropic phase boundary compositions. The results reveal large adiabatic cooling figures in ∼260 nm PZT films (11 K in 15 V) and 200 μm thick 0.7PMN-0.3PT single crystals (2.7 K in 240 V) at Curie transition temperatures and secondary cooling peaks at lower temperatures, near critical points. This is a very useful aspect of ferroelectric cooling elements to attain effective cooling over wide range of working temperatures in solid-state devices.
97 citations
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TL;DR: This Review tries to summarize what remarkable progress in multiferroic magnetoelectric composite systems has been achieved in most recent few years, with emphasis on thin films; and to describe unsolved issues and new device applications which can be controlled both electrically and magnetically.
Abstract: Multiferroic magnetoelectric composite systems such as ferromagnetic-ferroelectric heterostructures have recently attracted an ever-increasing interest and provoked a great number of research activities, driven by profound physics from coupling between ferroelectric and magnetic orders, as well as potential applications in novel multifunctional devices, such as sensors, transducers, memories, and spintronics. In this Review, we try to summarize what remarkable progress in multiferroic magnetoelectric composite systems has been achieved in most recent few years, with emphasis on thin films; and to describe unsolved issues and new device applications which can be controlled both electrically and magnetically.
1,642 citations
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TL;DR: An insight into the analogies, state-of-the-art technologies, concepts, and prospects under the umbrella of perovskite materials (both inorganic-organic hybrid halideperovskites and ferroelectric perovkites) for future multifunctional energy conversion and storage devices is provided.
Abstract: An insight into the analogies, state-of-the-art technologies, concepts, and prospects under the umbrella of perovskite materials (both inorganic-organic hybrid halide perovskites and ferroelectric perovskites) for future multifunctional energy conversion and storage devices is provided. Often, these are considered entirely different branches of research; however, considering them simultaneously and holistically can provide several new opportunities. Recent advancements have highlighted the potential of hybrid perovskites for high-efficiency solar cells. The intrinsic polar properties of these materials, including the potential for ferroelectricity, provide additional possibilities for simultaneously exploiting several energy conversion mechanisms such as the piezoelectric, pyroelectric, and thermoelectric effect and electrical energy storage. The presence of these phenomena can support the performance of perovskite solar cells. The energy conversion using these effects (piezo-, pyro-, and thermoelectric effect) can also be enhanced by a change in the light intensity. Thus, there lies a range of possibilities for tuning the structural, electronic, optical, and magnetic properties of perovskites to simultaneously harvest energy using more than one mechanism to realize an improved efficiency. This requires a basic understanding of concepts, mechanisms, corresponding material properties, and the underlying physics involved with these effects.
1,015 citations
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TL;DR: The magnetocaloric effect and its most straightforward application, magnetic refrigeration, are topics of current interest due to the potential improvement of energy efficiency of cooling and temperature control systems, in combination with other environmental benefits associated to a technology that does not rely on the compression/expansion of harmful gases.
941 citations
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TL;DR: A survey of the literature for ca. one thousand B-site substituted perovskite oxides can be found in this article, together with their electronic and magnetic properties and properties.
815 citations
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TL;DR: The electrocaloric effect (EC) is an adiabatic and reversible temperature change that occurs in a polar material upon application of an electric field as mentioned in this paper, and the current intensive research in EC materials has been driven by the quest for new energy efficient and environmentally friendly cooling technologies.
574 citations