Browsing Prof. Tripurari Prasad Sinha by Title
Now showing items 1-20 of 66
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AC Conductivity and Dielectric Relaxation in Ba(Sm1/2Nb1/2)O-3 Ceramic
(Elsevier Science, 2011-01-15)The complex perovskite oxide a barium samarium niobate (BSN) synthesized by solid-state reaction technique has single phase with cubic structure. The scanning electron micrograph of the sample shows the average grain size ... -
AC conductivity and dielectric relaxation in CaMg1 / 3 Nb2 / 3 O3
(PERGAMON-ELSEVIER SCIENCE LTD, 2008-05-06)The complex perovskite oxide calcium magnesium niobate, CaMg1/3Nb2/3O3 (CMN) is synthesized by a solid-state reaction technique. Dielectric spectroscopy is applied to investigate the electrical properties of CMN in a ... -
Ac conductivity of conducting polymer prepared with the use of water soluble support polymer
(IACS, 2005-09)The intrinsically conducting polymer, polyaniline (PANI) is synthesized by chemical oxidative polymerization process with the help of water soluble support polymer poly-vinyl alcohol (PVA). The field dependence of the ... -
Barium Titanate Ground- and Excited-State Properties from First-Principles Calculations
(American Physical Society, 2011-02-23)We present a comprehensive theoretical investigation of paraelectric (cubic) and ferroelectric (tetragonal) BaTiO3. The atomic and electronic structure, piezoelectric tensor, Debye temperature, zone center phonon frequencies, ... -
Complex formation study of thermodynamical, structural properties and density of states of Al-Mg binary alloy
(ELSEVIER SCIENCE BV, 2009-07-01)Within the framework of complex formation model the thermodynamical, structural and surface properties of Al–Mg alloy have been studied presuming the formation of Al3Mg2 complexes. The Gibb's free energy of mixing (GM), ... -
Dielectric and micromechanical studies of barium titanate substituted (1-y)Pb (Zn1/3Nb2/3)O3-yPT ferroelectric ceramics
(NATL INST SCIENCE COMMUNICATION-NISCAIR, 2010-05-01)Dielectric studies have been carried out on barium titanate substituted lead zinc niobate ferroelectrics ceramics, (Pb0.88Ba0.12)[(Zn1/3Nb2/3)(0.88)Ti-0.12)]O-3 and (Pb0.8Ba0.2)[(Zn1/3Nb2/3)(0.8)Ti-0.2)]O-3. The dielectric ... -
Dielectric and phase transition of BaTi 0.6Zr 0.4O 3 ceramics prepared by a soft chemical route
(SPRINGER, 2008-04-01)BaTi0.6Zr0.4O3 (BTZ) ceramic was synthesized by a soft chemical route. X-ray diffraction at room temperature shows that the sample has cubic perovskite structure with space group Pm-3m. Temperature dependent dielectric ... -
Dielectric Behavior of Yttrium doped Barium-zirconium-titanate Ceramics
(KOREAN PHYSICAL SOC, 2009-08-01)The ferroelectric behavior of the yttrium-doped barium-zirconium-titanate perovskite ceramics Ba(1-x)Y(2x/3)Ti(.75)Zr(0.25)O(3) (with x = 0.0, 0.01, 0. 025, 0.05) has been studied. The room temperature X-ray diffraition ... -
Dielectric properties of BaBi4Ti4O15 ceramics produced by cost-effective chemical method
(ELSEVIER SCIENCE BV, 2009-05-01)BaBi4Ti4O15, an Aurivillius compound, was synthesized by a cost-effective soft chemical route. The precursor was prepared by precipitating Bi- and Ba-oxalates inside a TiO2 powder suspension. A phase pure orthorhombic ... -
Dielectric properties of CdS nanoparticles synthesized by soft chemical route
(INDIAN ACAD SCIENCES, 2009-06-01)CdS nanoparticles have been synthesized by a chemical reaction route using thiophenol as a capping agent. The frequency-dependent dielectric dispersion of cadmium sulphide (CdS) is investigated in the temperature range of ... -
Dielectric properties of rare earth double perovskite oxide Sr2CeSbO6
(ELSEVIER SCIENCE BV, 2010-04-01)A polycrystalline rare earth double perovskite oxide, strontium cerium antimonate, Sr2CeSbO6 (SCS), is synthesized by solid-state reaction technique. The X-ray diffraction pattern at room temperature of SCS shows orthorhombic ... -
Dielectric relaxation and ac conductivity study in SrMg 1/3Nb2/3O3
(NATL INST SCIENCE COMMUNICATION, 2008-04-01)The frequency-dependent dielectric dispersion of strontium-magnesium- niobate, SrMg1/3Nb2ZiO3 ceramic synthesized by the solid state reaction technique is investigated in the temperature range from room temperature to 613 ... -
Dielectric relaxation and conduction mechanism in LaNi3/4M1/4O3 (M = Mo, W) at low temperature
(ELSEVIER SCIENCE, 2011-02-03)In order to investigate the electrical transport in LaNi3/4Mo1/4O3 and LaNi3/4W1/4O3, the dc conductivity and dielectric properties in these polycrystalline materials are investigated in the temperature range from 163K to ... -
Dielectric relaxation and electronic structure of BaAl 1/2Nb 1/2O 3: X-ray photoemission and nuclear magnetic resonance studies
(IOP PUBLISHING LTD, 2008-11-05)The frequency-dependent dielectric relaxation in barium-aluminium-niobate, BaAl1/2Nb1/2O3 ( BAN), at low temperatures (103-443 K) is investigated by alternating-current impedance spectroscopy in the framework of conductivity ... -
Dielectric relaxation and electronic structure of Ca (Fe1 2 Sb1 2) O3
(AMER PHYSICAL SOC, 2007-10-23)The frequency-dependent dielectric relaxation of calcium-iron-antimonate [Ca (Fe1 2 Sb1 2) O3] (CFS) ceramic, synthesized by a solid-state reaction technique is investigated in the temperature range from 143 to 463 K by ... -
Dielectric Relaxation and Electronic Structure of Double Perovskite Ca2AlNbO6
(Taylor & Francis, 2010-12-01)The dielectric property and the electronic structure of calcium aluminium niobate, Ca2AlNbO6 (CAN) synthesized by solid state reaction technique are investigated. The field dependence of dielectric response, loss tangent ... -
Dielectric relaxation and electronic structure of double perovskite Sr 2 FeSbO6
(AMER INST PHYSICS, 2008-09-15)The dielectric property and the electronic structure of a double perovskite, Sr2FeSbO6 (SFS) synthesized by solid state reaction technique are investigated. The x-ray diffraction of the sample taken at room temperature ... -
Dielectric Relaxation and Phase Transition in [Pb0.94Sr.06] [(Mn1/3Sb2/3)0.05(Zr0.55Ti0.45)0.95]O3 Ceramics
(Taylor & Francis, 2010-12-01)A piezoelectric ceramic composition [Pb0.94Sr0.06][(Mn1/3Sb2/3)0.05 (Zr0.55Ti00.45)0.95]O3 which is 6% Sr2+ substituted PZT ceramics with lead manganese antimonite as an additional hardener dopant is synthesized in pure ... -
Dielectric relaxation in complex perovskite BaFe1/2Sb1/2O3
(WORLD SCIENTIFIC PUBL CO PTE LTD, 2007-07-10)The complex perovskite oxide barium iron antimonate, BaFe 1/2Sb1/2O3 (BFS) is synthesized by a solid-state reaction technique for the first time. The X-ray diffraction of the sample at room temperature shows a monoclinic ... -
Dielectric relaxation in complex perovskite oxide BaCo1/2W1/2O3
(ELSEVIER SCIENCE BV, 2008-01-01)Polycrystalline BaCo1/2W1/2O3 (BCW) is prepared by the solid-state reaction technique. The X-ray diffraction study of the compound at room temperature reveals the monoclinic phase. The field dependence of the dielectric ...