Prof. Tripurari Prasad Sinha: Recent submissions
Now showing items 41-60 of 66
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Phase formation and dielectric study of Bi doped BaTi0.75Zr0.25O3 ceramic
(ELSEVIER SCIENCE BV, 2009-07-01)Perovskite types Ba1-xBi2x/3Ti0.75Zr0.25O3 (with x = 0.0, 0.025, 0.05) ceramics have been prepared through solid state reaction route. The room temperature XRD study suggests that all the compositions have single phase ... -
Effect of Dy Substitution on Dielectric Properties of BTZ Relaxor Ceramics
(TAYLOR & FRANCIS LTD, 2009)Perovskite types Ba(1-x)Dy(2x/3)Ti(0.75)Zr(0.25)O(3) (with x = 0.0, 0. 025, 0.05) ceramics have been prepared through solid state reaction route. The room temperature XRD study suggests that all the compositions have single ... -
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 ... -
Structural and dielectric relaxor properties of yttrium-doped Ba(Zr0.25Ti0.75)O-3 ceramics
(ELSEVIER SCIENCE SA, 2010-05-05)In this work, [Ba1-xY2x/3](Zr0.25Ti0.25)O-3 ceramics with different concentrations (x = 0, 0.01, 0.025 and 0.05) were synthesized by Solid state reaction. The X-ray diffraction patterns indicated that these crystalline ... -
Structural and magnetic properties of nanocrystalline Fe-doped SnO2
(ELSEVIER SCIENCE, 2011-01-01)Single phase Sn1-xFexO2 (x = 0.1, 0.3 and 0.5) nanoparticles having size in the range 9-17 nm were prepared by a chemical route. XRD analysis of the samples confirmed the formation of cassiterite phase without any impurity. ... -
Synthesis and dielectric relaxation studies of Ba substitution in Pb(Zn1/3Nb2/3)O-3 ceramics by co-precipitation method
(ELSEVIER SCIENCE, 2010-07)Coexistence of both sharp transition around (T-c1 similar to 305 k) in lower frequency region (similar to 11 kHz) and broad transitions (similar to 350 < T-c2 < 410 K) in the frequency range (11 kHz-1 MHz) of dielectric ... -
Structural and dielectric properties of A(Fe1/2Ta1/2)O-3 [A = Ba, Sr, Ca]
(PERGAMON-ELSEVIER SCIENCE, 2011-04)The complex perovskite oxide barium iron tantalate (BFT), BaFe1/2Ta1/2O3. strontium iron tantalate (SFT). SrFe1/2Ta1/2O3 and calcium iron tantalate (CFT). CaFe1/2Ta1/2O3 are synthesized by a solid-state reaction technique. ... -
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 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 Studies of Ba Substitution in Lead Zinc Niobate-Lead Zirconium Titanate Ceramics by Precipitation Method
(Taylor & Francis, 2010-12-01)The polycrystalline samples of (Pb0.90Ba0.10) [(Zn1/3Nb2/3)0.20-(Zr0.51Ti0.49)0.80]O3 [PBZN-PZT] compositions ceramics have been synthesized by substitution of barium in PZN-PZT by precipitation method and finally by ... -
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 ... -
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, ... -
Impedance Spectroscopy Analysis of Double Perovskite Ho2NiTiO6
(Springer, 2010-12-01)The electrical properties of double perovskite Ho2NiTiO6 (HNT) are investigated by impedance spectroscopy in the temperature range 30-420 degrees C and frequency range 100 Hz to 1 MHz. The X-ray diffraction analysis reveals ... -
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 ... -
Dielectric Relaxation of Complex Perovskite Sm(Ni1/2Zr1/2)O3
(Elsevier Science, 2010-11-01)Complexperovskiteoxidesamariumnickelzirconate,Sm(Ni1/2Zr1/2)O3 (SNZ), issynthesizedbyasolid- state reactiontechnique.X-raydiffractionofthesampleatroomtemperatureshowsamonoclinic phase.Impedancespectroscopyisusedtostudy ... -
Electrical Studies of Low Energy Ar9+ Irradiated Conducting Polymer PANI-PVA
(Pergamon-Elsevier Science, 2011-03)Polyaniline (PANI) prepared using water soluble support polymer polyvinyl alcohol (PVA) was subjected to irradiation with 150 keV Argon (Ar9+) ion at the fluence of 7.68 x 10(14) ion/cm(2) with beam current of 2 mu A ... -
Electronic Structure of Sr2AlNbO6: Dielectric and X-ray Photoemission Spectroscopy Study
(Japan Society of Applied Physics, 2010-06-21)The dielectric property and the electronic structure of double perovskite oxide strontium aluminium niobate, Sr2AlNbO6 (SAN), synthesised by a solid state reaction technique are investigated. The Rietveld refinement of ... -
Magnetic Structure of Double Perovskites Ca2MWO6 (M=Co, Ni): a First Principles Study
(Elsevier, 2010-07)First principles calculations have been performed to study the electronic and magneticstructures of doubleperovskites Ca2MWO6 (M=Co, Ni) using full potential linearized augmented plane wave method. The density of states ... -
First principles Study of Electronic Structure and Optical Properties of Double Perovskite Ba2(InM)O6 [View the MathML source, Ta]
(Elsevier, 2010-07-01)The structural, electronic and optical properties of double perovskite oxides Ba2(InNb)O6 and Ba2(InTa)O6 are investigated by full-potential linearized augmented plane wave method based on density functional theory under ... -
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 ...