Entity

Time filter

Source Type


Chavan S.G.,Nano Composite Research Laboratory | Mane S.S.,Nano Composite Research Laboratory | Joshi P.B.,Nano Composite Research Laboratory | Salunkhe D.J.,Nano Composite Research Laboratory
Journal of Materials Science: Materials in Electronics | Year: 2016

The paper reports the synthesis of Ba0.95Ca0.05Ti0.90Zr0.10O3 (BCZT) composition via ceramic route of synthesis to result into the BCZT composite. The La0.67Sr0.33MnO3 (LSMO) is synthesized using hydroxide co-precipitation route Further, the magnetodielectric (MD) composites of Ba0.95Ca0.05Ti0.90Zr0.10O3(BCZT) are formed by addition of LSMO at y = 0.10, 0.15 and 0.20. The parent BCZT composition is analyzed for its dielectric properties. The composites LSMO-BCZT (LBCZT) are investigated for the variation of dielectric constant and impedance spectra as a function of applied magnetic field for the frequency between 20 Hz and 1 MHz. The observations on MD effect show that the dielectric constant possesses contributions due to magnetic field dependant interfacial polarization and variations due to the induced stress. © 2015, Springer Science+Business Media New York. Source


Dhumal S.G.,Nano Composite Research Laboratory | Kulkarni S.B.,Institute of Science | Jayasingh M.E.,Naval Materials Research Laboratory | Joshi P.B.,Nano Composite Research Laboratory | Salunkhe D.J.,Nano Composite Research Laboratory
Journal of Materials Science: Materials in Electronics | Year: 2016

Paper reports the synthesis of cobalt doped Ba0.95Sr0.05TiO3 (BST0.05) by solid state reaction (SSR) method. The X-ray diffractograms analysis reveals the formation of single phase crystalline structure. Scanning electron microscopy image was also employed to observe surface morphology. The dielectric constant and dielectric loss of BST0.05 are obviously influenced by cobalt addition content. The Curie temperature Tc shifts to lower value with increasing cobalt doping content. The studies on P-E and M-H hysteresis loops are carried out to confirm simultaneous presence of both the ferroelectric and ferromagnetic orders in a cobalt doped BST. It is observed that, the value of saturation magnetisation (Ms) is 0.01535 emu/g at field 4500 G, value of remanent magnetisation (Mr) is 0.0008263 emu/g and value of coeresivity is 640 G measured at room temperature for BSTCo0.05. © 2015, Springer Science+Business Media New York. Source


Chavan S.G.,Nano Composite Research Laboratory | Mane S.M.,Institute of Science | Kulkarni S.B.,Institute of Science | Jayasingh M.E.,Naval Materials Research Laboratory | And 2 more authors.
Journal of Materials Science: Materials in Electronics | Year: 2016

The present paper report a study of the nickel doped cobalt ferrite Co0.9Ni0.1Fe2O4 have been synthesized by conventional hydrothermal technique followed by microwave sintering. The Co0.9Ni0.1Fe2O4 nanoparticles are characterized by X-ray diffraction (XRD), transmission electron microscopy, field emission scanning electron microscopy, particle size analyzer and vibrating sample magnetometer. The XRD spectra show a high degree of crystallinity and also indicates that the diffraction peaks correspond to the cubic spinel structure. Transmission electron microscopy indicating that, the crystallite size of Co0.9Ni0.1Fe2O4 nanoparticles was in the range of 40–75 nm. The nanoparticles show relatively high saturation magnetization of 32.540 emu/g. © 2016, Springer Science+Business Media New York. Source


Kharade P.M.,Nano Composite Research Laboratory | Mane S.M.,The Institute of Science | Kulkarni S.B.,The Institute of Science | Joshi P.B.,Nano Composite Research Laboratory | Salunkhe D.J.,Nano Composite Research Laboratory
Journal of Materials Science: Materials in Electronics | Year: 2015

The paper reports the electrodeposition of polypyrrole thin film by galvanostatic mode of deposition. The structural study of polypyrrole film is characterized by X-ray diffraction (XRD) and Fourier transforms infrared (FTIR) spectroscopy. The surface morphological study is carried out with scanning electron microscope (SEM) techniques. The XRD and FTIR spectroscopy study shows the formation of amorphous and conducting polypyrrole thin film. SEM images shows that the substrates are uniformly coated with polypyrrole thin films. The surface wettability study is carried out by means of contact angle measurement. Surface wettability study shows that the films are hydrophilic in nature. The testing of polypyrrole film electrode as a supercapacitor is made with the help of cyclic voltammetry, galvanostatic charge–discharge measurement and electrochemical impedance spectroscopy study. The value of specific capacitance was found to be 381 F g−1 in 0.5 M Na2SO4 aqueous solution at scan rate 5 mV s−1 in the −1.0 to +1.0 V versus saturated calomel electrode. However, the value of Coulombic efficiency, specific energy and specific power of polypyrrole thin film electrode is observed to be 96.54 %, 762.60 Wh kg−1 and 281,000 kW kg−1. © 2015 Springer Science+Business Media New York Source


Dhumal S.G.,Nano Composite Research Laboratory | Tarale A.N.,University of Pune | Joshi P.B.,Nano Composite Research Laboratory | Salunkhe D.J.,Nano Composite Research Laboratory
Journal of Materials Science: Materials in Electronics | Year: 2016

Synthesis of Ni doped Ba0.95Sr0.05TiO3 (BST) was carryout by solid state reaction method. The influence of doping amount of Ni on BST was investigated. The XRD confirmed the single phase crystalline structure. Scanning electron microscopy image was also employed to observe surface morphology. The dielectric constant and dielectric loss of BST0.05 are obviously influenced by nickel addition content. The Curie temperature Tc decreases with increasing nickel doping content. The studies on P–E and M–H hysteresis loops are carried out to confirm simultaneous presence of both the ferroelectric and ferromagnetic orders in a Ni doped BST. © 2016 Springer Science+Business Media New York Source

Discover hidden collaborations