Department of Physics: Recent submissions

Now showing items 121-140 of 212

    • Swapping path-spin intraparticle entanglement onto spin-spin interparticle entanglement 

      Adhikari, S.; Majumdar, A. S.; Home, Dipankar; Pan, A. K. (EPL ASSOCIATION, 2010-01-01)
      Based on a scheme that produces an entanglement between the spin and the path variables of a single spin-(1/2) particle (qubit) using a beam-splitter and a spin-flipper, we formulate a procedure for transferring this ...

    • Dielectric relaxation of ZnO nanostructure synthesized by soft chemical method 

      Tripathi, R.; Kumar, A.; Bharti, Chandrahas; Sinha, Tripurari Prasad (ELSEVIER SCIENCE BV, 2010-03-01)
      Thioglycerol capped nanoparticles of ZnO have been prepared in methanol through chemical technique. Nanostructures of the prepared ZnO particles have been confirmed through X-ray diffraction measurement. The Debye-Scherrer ...

    • Dielectric spectroscopy study of CdS nanoclusters synthesized by a soft chemical route 

      Tripathi, R.; Kumar, P.; Kumar, A.; Sinha, Tripurari Prasad (Elsevier B.V, 2009)
      Dielectric spectroscopy has been applied to investigate the electrical properties of Cadmium Sulfide (CdS) nanoclusters synthesized by a chemical reaction route using thiophenol as a capping agent. The frequency-dependent ...

    • Dielectric properties of CdS nanoparticles synthesized by soft chemical route 

      Tripathi, R.; Kumar, A.; Sinha, Tripurari Prasad (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 relaxation in ZnO nanostructure 

      Tripathi, R.; Bharti, Chandrahas; Kumar, A.; Sinha, Tripurari Prasad (Elsevier B.V, 2009)
      ZnO nanoparticles have been prepared in methanol through chemical technique using thioglycerol as a capping agent. Nanostructures of the prepared ZnO particles have been characterized by scanning electron microscope (SEM). ...

    • Electronic Transport and Ground State Properties of Li-Mg Binary Alloy 

      Kumar, A.; Rafique, S. M.; Sinha, Tripurari Prasad (PHYSICAL SOC REPUBLIC CHINA, 2009-04-01)
      The electronic transport properties of Li-Mg binary alloy have been studied by Harrison's first principle pseudopotential technique. The Percus-Yevik hard sphere model is used to compute the partial structure factors Sij ...

    • Complex formation study of thermodynamical, structural properties and density of states of Al-Mg binary alloy 

      Kumar, A.; Rafique, S. M.; Jha, N.; Sinha, Tripurari Prasad (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 relaxation in complex perovskite oxide In(Ni1/2Zr1/2)O-3 

      Agrawal, Lata; Singh, Bhrigunandan Prasad; Sinha, Tripurari Prasad (PERGAMON-ELSEVIER SCIENCE LTD, 2009-09-01)
      The dielectric study of indium nickel zirconate, In(Ni1/2Zr1/2)O3 (INZ) synthesized by solid state reaction technique is performed in a frequency range from 500 Hz to 1 MHz and in a temperature range from 303 to 493 K. The ...

    • Structural and dielectric behaviour of barium substituted lead zinc niobate ceramics at low temperature 

      Himanshu, A. K.; Gupta, D. C.; Dutta, Alo; Sinha, Tripurari Prasad; Bandyopadhayay, S. K. (NATL INST SCIENCE COMMUNICATION, 2009-03-01)
      The polycrystalline samples of (Pb(1-x)Ba(x))(Zn(1/3)Nb(2/3))O(3) (PBZN) ceramics have been synthesis by the columbite precursor method. X-ray diffraction analysis of PBZN synthesized For x = 0.15, 0.25, 0.35 and 0.50 shows ...

    • Impedance spectroscopy of perovskite barium substituted lead zinc niobate ceramics 

      Himanshu, A. K.; Choudhary, B. K.; Gupta, D. C.; Bandyopadhayay, S. K.; Sinha, Tripurari Prasad (ELSEVIER SCIENCE BV, 2010-03-15)
      The complex perovskite lead barium zinc niobate, (Pb1−xBax)(Zn1/3Nb2/3)O3 ceramic at x=0.25 was prepared by a columbite precursor method. The microstructure analysis was done by scanning electron microscope. The field ...

    • Impedance spectroscopy study of BaMg1/3Nb2/3O3: Frequency and time domain analyses 

      Dutta, Alo; Sinha, Tripurari Prasad (ELSEVIER SCIENCE BV, 2010-03-15)
      The complex perovskite oxide barium magnesium niobate, BaMg1/3Nb2/3O3 (BMN) is synthesized by a solid-state reaction technique. The X-ray diffraction of the sample shows the monoclinic structure at room temperature. Impedance ...

    • Dielectric properties of BaBi4Ti4O15 ceramics produced by cost-effective chemical method 

      Chakrabarti, A.; Bera, J.; Sinha, Tripurari Prasad (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 rare earth double perovskite oxide Sr2CeSbO6 

      Bharti, Chandrahas; Sinha, Tripurari Prasad (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 ...

    • Structural and Ferroelectric Properties of Complex Perovskites Pb(1-x)Bax(Fe1/2Ta1/2)O3 (x=0.00, 0.05, 0.1, 0.15) 

      Bharti, Chandrahas; Dutta, Alo; Sinha, Tripurari Prasad (TAYLOR & FRANCIS LTD, 2009)
      We have synthesized the complex perovskite oxides Pb(1-x)Bax(Fe1/2Ta1/2)O3 (where x = 0.0, 0.05, 0.10 and 0.15) by two steps Coulombite precursor process in cubic phase and studied the effect of Ba substitution in ...

    • Ferroelectric relaxor behaviour in Pb(Fe0.5Ta0.5)O-3 

      Bharti, Chandrahas; Choudhary, S. N.; Sinha, Tripurari Prasad (INDIAN ASSOC CULTIVATION SCIENCE, 2009-04-01)
      The relaxor ferroelectric lead iron tantalate, Pb(Fe0.5Ta0.5)O-3 (PFT) is synthesized by Coulombite precursor method. The X-ray diffraction pattern of the sample at room temperature shows a cubic phase. The field dependence ...

    • Phase formation and dielectric study of Bi doped BaTi0.75Zr0.25O3 ceramic 

      Badapanda, T.; Rout, S. K.; Panigrahi, S.; Sinha, Tripurari Prasad (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 

      Badapanda, T.; Rout, S. K.; Panigrahi, S.; Sinha, Tripurari Prasad; Woo, S. I. (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 

      Badapanda, T.; Panigrahi, S.; Rout, S. K.; Sinha, Tripurari Prasad; Woo, S. I. (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 

      Badapanda, T.; Rout, S. K.; Cavalcante, L. S.; Sczancoski, J. C.; Panigrahi, S.; Sinha, Tripurari Prasad; Longo, E. (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 

      Mishra, A. K.; Sinha, Tripurari Prasad; Bandyopadhyay, S.; Das, D. (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. ...