Physics: Recent submissions

  • Ce(1-x)Rh(x)O(2-delta) solid solution formation in combustion-synthesized Rh/CeO2 catalyst studied by XRD, TEM, XPS, and EXAFS 
    Gayen, A.; Priolkar, K.R.; Sarode, P.R.; Jayaram, V.; Hegde, M.S.; Subbanna, G.N.; Emura, S. (Chemistry of Materials. 16(11); 2004; 2317-2328.)
    Ionically dispersed Rh over CeO2 in Rh/CeO2 catalysts prepared by a single step solution combustion method is shown to improve the redox property and catalytic activity. The H-2/ Rh ratio obtained from hydrogen uptake ...
  • Low temperature magnetic structure of MnSe 
    D'Sa, J.B.C.E.; Bhobe, P.A.; Priolkar, K.R.; Das, A.; Krishna, P.S.R.; Sarode, P.R.; Prabhu, R.B. (Pramana-Journal of Physics. 63(2); 2004; 227-232.)
    In this paper we report low temperature neutron diffraction studies on MnSe in order to understand the anomalous behaviour of their magnetic and transport properties. Our study indicates that at low temperatures MnSe has ...
  • Resistivity and thermopower of Ni(2.19)Mn(0.81)Ga 
    Priolkar, K.R.; Bhobe, P.A.; Sapeco, S.D.; Paudel, R. (Physical Review B. 70(13); 2004; Article ID: 132408.)
    We report results of the first studies on the thermoelectric power (TEP) of the magnetic heusler alloy Ni(2.19)Mn(0.81)Ga. We explain the observed temperature dependence of the TEP in terms of the crystal field splitting ...
  • Carbon-supported Pt-Fe alloy as a methanol-resistant oxygen-reduction catalyst for direct methanol fuel cells 
    Shukla, A.K.; Raman, R.K.; Choudhury, N.A.; Priolkar, K.R.; Sarode, P.R.; Emura, S.; Kumashiro, R. (Journal of Electroanalytical Chemistry. 563(2); 2004; 181-190.)
    Crossover of methanol from the anode to the cathode through the polymer-electrolyte membrane in solid-polymer-electrolyte direct methanol fuel cells constitutes a significant loss in their performance. Pt/C and Pt-Fe/C ...
  • Intermartensitic Transitions in Ni-Mn-Ga 
    Bhobe, P.A.; Priolkar, K.R.; Sarode, P.R. (Solid State Phys. DAE Symp. 50; 2005; 87-88.)
    Different phases like five- and seven-layered modulations (referred to as 5M and 7M) and the non-modulated (NM) are observed during the martensite phase formation in the Ni-Mn-Ga system A hysteresis in transport properties ...
  • Ionic Dispersion of Pt over CeO(2) by Combustion Method: Structural Investigation by XRD, TEM, XPS and EXAFS 
    Bera, P.; Priolkar, K.R.; Gayen, A.; Sarode, P.R.; Hegde, M.S.; Emura, S.; Kumashiro, R.; Jayaram, V.; Subbanna, G.N. (Chemistry of Materials. 15(Apr); 2003; 2049-2060.)
    The structure and chemical nature of Pt in combustion-synthesized Pt/CeO(2) catalysts have been investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), ...
  • The one-dimensional extended Bose-Hubbard model 
    Pai, R.V.; Pandit, Rahul (Proceedings of the Indian Academy of Sciences-Chemical Sciences. 115(5and6); 2003; 721-726.)
    We use the finite-size, density-matrix-renormalization-group (DMRG) method to obtain the zero-temperature phase diagram of the one-dimensional, extended Bose-Hubbard model, for mean boson density rho = 1, in the U-V plane ...
  • Formation of Ce(1-x)Pd(x)O(2-delta) solid solution in combustion-synthesized Pd/CeO2 catalyst: XRD, XPS, and EXAFS investigation 
    Priolkar, K.R.; Bera, P.; Sarode, P.R.; Hegde, M.S.; Emura, S.; Kumashiro, R.; Lalla, N.P. (Chemistry of Materials. 14(5); 2002; 2120-2128.)
    Pd/CeO2 (1 at. percent) prepared by the solution-combustion method shows a higher catalytic activity for CO oxidation and NO reduction than Pd metal, PdO, and Pd dispersed over CeO2 by the conventional method. To understand ...
  • Indian Academy of Sciences' refresher course in experimental physics 
    Sarode, P.R.; Desa, J.A.E.; Priolkar, K.R. (Current Science. 82(2); 2002; 124-125.)
  • Study of local environment of Ag in Ag/CeO(2) catalyst by EXAFS 
    Sarode, P.R.; Priolkar, K.R.; Bera, P.; Hegde, M.S.; Emura, S.; Kumashiro, R. (Materials Research Bulletin. 37(9); 2002; 1679-1690.)
    The combustion synthesized Ag/CeO(2) catalysts have been characterized by Extended Xray Absorption Fine Structure (EXAFS) spectroscopy at the Ag K-edge.It has been found that Ag+ like species is present in 1 percent Ag/CeO(2) ...

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