Physics: Recent submissions

  • Effects of pressure and temperature on pore structure of ceramic synthesized from rice husk: A small angle neutron scattering investigation 
    Dessai, R.R.; Desa, J.A.E.; Sen, D.; Mazumder, S. (Journal of Alloys and Compounds. 564; 2013; 125-129.)
    Ceramic powder has been synthesized from rice husk as the source of silica. In order to probe the evolution of its hierarchical mesoscopic and microscopic porous structure, the ceramic powder was compacted at different ...
  • Diffusion of water in bentonite clay 
    Dessai, R.R.; Sharma, V.K.; Prabhudesai, S.A.; Mitra, S.; Desa, J.A.E.; Mukhopadhyay, R. (Journal of The Physical Society of Japan. 82; 2013; SA008-.)
    Diffusion of water confined in sodium bentonite clay is studied using the quasi-elastic neutron scattering (QENS) technique. Hydration of bentonite clay is characterized by several methods including X-ray diffraction and ...
  • Red persistent luminescence in MgGa(2)O(4):Cr3+; a new phosphor for in vivo imaging 
    Basavaraju, N.; Sharma, S.; Bessiere, A.; Viana, B.; Gourier, D.; Priolkar, K.R. (Journal of Physics D-Applied Physics. 46(37); 2013; Article ID: 375401.)
    A new red-emitting long-lasting phosphorescence (LLP) material useful as biomarker for small animal in vivo imaging is presented. X-ray irradiated MgGa(2)O(4):Cr3+ is shown to be a suitable persistent phosphor emitting in ...
  • Structural and magnetic phase transitions in MnTe-MnSe solid solutions 
    Ingle, K.E.; D'Sa, J.B.C.E.; Das, A.; Priolkar, K.R. (Journal of Magnetism and Magnetic Materials. 347; 2013; 68-71.)
    Neutron diffraction studies as a function of temperature on solid solutions of MnSe and MnTe in the Se rich region are presented. Interestingly as Te is doped in MnSe, the structural transformation to NiAs phase diminishes, ...
  • Hard-core bosons in a zig-zag optical superlattice 
    Dhar, A.; Mishra, T.; Pai, R.V.; Mukerjee, S.; Das, B.P. (Physical Review A. 88(5); 2013; Article No. 053625 .)
    We study a system of hard-core bosons at half-filling in a one-dimensional optical superlattice. The bosons are allowed to hop to nearest- and next-nearest-neighbor sites. We obtain the ground-state phase diagram as a ...
  • Chiral Mott insulator with staggered loop currents in the fully frustrated Bose-Hubbard model 
    Dhar, A.; Mishra, T.; Maji, M.; Pai, R.V.; Mukerjee, S.; Paramekanti, A. (Physical Review B. 87(17); 2013; Article no. 174501.)
    Motivated by experiments on Josephson junction arrays in a magnetic field and ultracold interacting atoms in an optical lattice in the presence of a "synthetic" orbital magnetic field, we study the "fully frustrated" ...
  • Upconversion luminescence of cerium doped CoWO(4) nanomaterials 
    UmaSubramanian; Naik, S.J.; Tangsali, R.B.; Salker, A.V. (Journal of Luminescence. 134; 2013; 464-468.)
    In this paper we report the bluish green upconversion intrinsic photoluminescence (PL) observed at room temperature (RT) 300 K for the nanorange (27-50 nm) Ce3+ doped and undoped CoWO(4) powder samples sintered in air at ...
  • Hydration studies of Bentonite clay 
    Desai, R.R.; Desa, J.A.E.; Aswal, V.K. (AIP Conference Proceedings 1447; 2012; 197-198.)
    Bentonite clay when hydrated increases its volume several fold to form a pliable mass. X-ray diffraction showed that as hydration increases, the crystalline peaks due to kaolinite, calcite and quartz are gradually replaced ...
  • Three-body on-site interactions in ultracold bosonic atoms in optical lattices and superlattices 
    Singh, M.; Dhar, Arya; Mishra, T.; Pai, R.V.; Das, B.P. (Physical Review A. 85(5); 2012; Article ID: 051604(R).)
    The Mott-insulator-superfluid transition for ultracold bosonic atoms in an optical lattice has been extensively studied in the framework of the Bose-Hubbard model with two-body on-site interactions. We analyze the additional ...
  • Hydration of bentonite clay by X-ray and neutron scattering 
    Desa, J.A.E. (American Institute of Physics (AIP) Conf. Proc. , 1447. 2012; 197-198.)
    Bentonite clay when hydrated increases its volume several fold to form a pliable mass. X-ray diffraction showed that as hydration increases, the crystalline peaks due to kaolinite, calcite and quartz are gradually replaced ...

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