Search Results - "Mahanti, SD"
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Ab initio study of deep defect states in narrow band-gap semiconductors: group III impurities in PbTe
Published in Physical review letters (10-02-2006)“…The nature of deep defect states, in general, and those associated with group III elements (Ga, In, Tl) in narrow band-gap IV-VI semiconductors (PbTe and…”
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Resonant states in the electronic structure of the high performance thermoelectrics AgPbmSbTe2+m: The role of Ag-Sb microstructures
Published in Physical review letters (01-10-2004)“…Ab initio electronic structure calculations based on gradient corrected density-functional theory were performed on a class of novel quaternary compounds…”
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Charge ordering and self-assembled nanostructures in a fcc Coulomb lattice gas
Published in Physical review. B, Condensed matter and materials physics (01-08-2005)Get full text
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On the Lamellar Compounds CuBiP2Se6, AgBiP2Se6 and AgBiP2S6. Antiferroelectric Phase Transitions Due to Cooperative Cu+ and Bi3+ Ion Motion
Published in Inorganic chemistry (25-07-2005)“…CuBiP2Se6, AgBiP2Se6, and AgBiP2S6 were prepared from the corresponding elements. CuBiP2Se6 and AgBiP2Se6 crystallize in the space group R3̄ with a =…”
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Crystal Growth, Thermoelectric Properties, and Electronic Structure of AgBi3S5 and AgSbxBi3-xS5 (x = 0.3)
Published in Chemistry of materials (12-07-2005)Get full text
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Lamellar Mesostructured Silicas with Chemically Significant Hierarchical Morphologies
Published in Advanced functional materials (01-05-2004)“…We describe the hierarchical structures of mesostructured silicas assembled from electrically neutral and unsymmetrical Gemini surfactants of the type…”
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Structure factor for the periodic walls of mesoporous MCM-41 molecular sieves
Published in Microporous and mesoporous materials (1999)“…A periodic wall model has been developed to calculate the structure factor of hexagonal MCM-41 molecular sieves. This is a discrete lattice version of the…”
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Stabilization of New Forms of the Intermetallic Phases β-RENiGe2 (RE = Dy, Ho, Er, Tm, Yb, Lu) in Liquid Indium
Published in Inorganic chemistry (23-02-2004)“…Flux conditions using liquid indium bypass the thermodynamically stable structure and yield new forms of the phases RENiGe2 (RE = Dy, Er, Yb, Lu). The…”
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Intermetallic Compounds with Near Zintl Phase Behavior: RE2Zn3Ge6 (RE = La, Ce, Pr, Nd) Grown from Liquid Indium
Published in Inorganic chemistry (28-11-2005)“…A series of compounds has been discovered while investigating reactions of rare earth, transition metals, and Ge in excess indium. These compounds, RE2Zn3Ge6…”
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Li2PbGeS4 and Li2EuGeS4: Polar Chalcopyrites with a Severe Tetragonal Compression
Published in Chemistry of materials (17-12-2001)“…Li2PbGeS4 and Li2EuGeS4 form by dissolving Pb/Eu and Ge in molten Li2S9 at 600−650 °C. They crystallize in the tetragonal, noncentrosymmetric space group I-42m…”
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Stabilization of β-SiB3 from Liquid Ga: A Boron-Rich Binary Semiconductor Resistant to High-Temperature Air Oxidation
Published in Angewandte Chemie International Edition (29-04-2003)“…Unlike the original form of SiB3, which has a huge compositional spread in its Si/B ratio and a crystal structure with Si atoms randomly distributed over all…”
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Tb4FeGe8 Grown in Liquid Gallium: Trans−Cis Chains from the Distortion of a Planar Ge Square Net
Published in Inorganic chemistry (04-04-2005)“…The ternary germanide Tb4FeGe8 was obtained from Ga flux reactions. The crystal structure studied with single-crystal X-ray diffraction revealed the existence…”
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Theoretical study of encapsulated alkali metal atoms in nanoporous channels of ITQ-4 zeolite: One-dimensional metals and inorganic electrides
Published in Physical review letters (19-11-2004)“…Electronic structure calculations within density-functional theory have been carried out in a class of novel inorganic electrides M-ITQ-4 zeolite (M = Na, K,…”
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Water Mediated Proton Transfer in a Mesostructured Aluminosilicate Framework: An ab Initio Molecular Dynamics Study
Published in The journal of physical chemistry. B (24-11-2005)“…The proton transfer process mediated by water molecules adsorbed in an aluminosilicate framework has been studied using ab initio molecular dynamics…”
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Yb9Zn4Bi9: Extension of the Zintl Concept to the Mixed-Valent Spectator Cations
Published in Journal of the American Chemical Society (19-12-2001)Get full text
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RE2MAl6Si4 (RE = Gd, Tb, Dy; M = Au, Pt): Layered Quaternary Intermetallics Featuring CaAl2Si2-Type and YNiAl4Ge2-Type Slabs Grown from Aluminum Flux
Published in Inorganic chemistry (01-12-2003)“…Six new intermetallic aluminum silicidesGd2PtAl6Si4, Gd2AuAl6Si4, Tb2PtAl6Si4, Tb2AuAl6Si4, Dy2PtAl6Si4, and Dy2AuAl6Si4have been obtained from reactions…”
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Modeling the Local Structure and Energetics of Protozeolitic Nanoclusters in Hydrothermally Stable Aluminosilicate Mesostructures
Published in The journal of physical chemistry. B (24-02-2005)“…The density functional theory (DFT) method is used to investigate the structure and bonding of silica and aluminosilicate nanoclusters containing five- and…”
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Yb8Ge3Sb5, a Metallic Mixed-Valent Zintl Phase Containing the Polymeric 1 ∞[Ge3 4-] Anions
Published in Journal of the American Chemical Society (14-04-2004)“…Yb8Ge3Sb5 is a nonclassical Zintl phase with metallic properties arising from the electropositive “spectator” cations of Yb. This compound contains the new…”
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Networklike Pattern Formation in Phase Separating Polymer Solutions: A Molecular Dynamics Study
Published in Physical review letters (12-01-1998)Get full text
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Multinary Intermetallics from Molten Al. Synthesis of SmNiAl4Ge2 and YNiAl4Ge2. Possible Spin Frustration in Separated Triangular Sm3+ Layers
Published in Chemistry of materials (20-09-1999)“…SmNiAl4Ge2 crystallizes from molten Al containing Sm, Ni, and Ge. The compound crystallizes in the rhomohedral space group R3m with a = 4.1121(6) Å, c =…”
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