Prof. C.N.R. Rao's Publications: Recent submissions

Now showing items 421-440 of 892

The Nature of Charge Ordering in Rare Earth Manganates and Its Strong Dependence on the Size of the A-Site Cations

Kumar, N; Rao, C N R (Academic Press Inc, 1997-03)

Charge ordering in rare earth manganates of the typeLn0.5A0.5MnO3(Ln=rare earth,A=alkaline earth) is highly sensitive to the average radius of the A-site cations, 〈rA〉. In the small 〈rA〉 regime (e.g., Y0.5Ca0.5MnO3), charge ...
Nanoparticles of nickel and silver produced by the polyol reduction of the metal salts intercalated in montmorillonite

Ayyappan, S; Subbanna, G N; Gopalan, R Srinivasa; Rao, C N R (Elsevier Science BV, 1996)

Nickel (II) and silver (I) have been exchanged to varying extents in the interlayers of montmorillonite by taking nickel acetate hydrate and silver nitrate as starting materials. In situ reduction with boiling ethylene ...
Novel experiments with carbon nanotubes: opening, filling, closing and functionalizing nanotubes

Satishkumar, B C; Govindaraj, A; Mofokeng, J; Subbanna, G N; Rao, C N R (IOP Publishing Ltd, 1996-11-14)

Carbon nanotubes have been opened using a variety of oxidants including HF/BF3 and OsO4 at room temperature. The opened nanotubes have been filled with metals such as Ag, Au, Pd and Pt by simple chemical means. The opened ...
Epitaxial Nature of the Films of LaNiO3, Pb(Zr0.5Ti0.5)O3, and La0.95Mn0.95O3 Obtained by Nebulized Spray Pyrolysis

Aiyer, Hemantkumar N; Raju, A R; Subbanna, G N; Rao, C N R (American Chemical Society, 1997-03)

Films of complex oxide materials deposited on single-crystal substrates by means of nebulized spray pyrolysis have been investigated for their epitaxial nature by employing X-ray rocking curve studies and high-resolution ...
The metal-insulator transition: a perspective

Edwards, P P; Johnston, R L; Rao, C N R; Tunstall, D P; Hensel, F (Royal Society London, 1998-01-15)

The metal-insulator transition, a quantum phase transition signifying the natural transformation of a metallic conductor to an insulator, continues to be the focus of intense inquiry and debate. The first discussion of the ...
A Novel Monomeric Tin(II) Phosphate, [N(C2H5NH3)3]3+[Sn(PO4)(HPO4)]3−•4H2O, Connected through Hydrogen Bonding

Ayyappan, S; Cheetham, A K; Natarajan, S; Rao, C N R (Academic Press Inc, 1998-08)

The tin(II) phosphate, [N(C2H5NH3)3]3+[Sn(PO4)(HPO4)]3−4H2O, contains monomeric Sn2(PO4)2(HPO4)2units which form a hydrogen-bonded network with the TREN amine (TREN=N(C2H5NH3)3+3); triclinic, space groupP1 (no. ...
Synthesis Of Multi-Walled And Single-Walled Nanotubes, Aligned-Nanotube Bundles And Nanorods By Employing Organometallic Precursors

Rao, C N R; Govindaraj, A; Sen, Rahul; Satishkumar, B C (Springer-Verlag, 1998-11)

Pyrolysis of organometallic precursors such as metallocenes and iron pentacarbonyl as well as of their mixtures with hydrocarbons such as acetylene or benzene has been carried out under a variety of conditions to synthesize ...
Interaction of Nitrogen with Fullerenes : Nitrogen Derivatives of C60 and C70

Pradeep, T; Vijayakrishnan, V; Santra, A K; Rao, C N R (American Chemical Society, 1991-12-26)

On the basis of N(1s) core-level spectroscopic studies, it is found that nitrogen interacts with multimolecular films of C60. More interestingly, mass spectrometric studies show that contact-arc vaporization of graphite ...
Interaction Of Solid Films Of C60 and C70 With Nickel

Santra, A K; Seshadri, Ram; Vijayakrishnan, V; Rao, C N R (Pergamon-Elsevier Science Ltd, 1993-01)

Interaction of varying coverages of Ni metal with solid films of C60 and C70 has been investigated by UV and X-ray photemission spectroscopy. The shifts in the valence bands of C60 (as well as of C70) with increasing Ni ...
Superconductivity in Ba(Pb,Bi,Sb)O3, Ba(Pb,Bi,Te)O3 and (Ba,La) (Pb,Bi,Tl)O3 systems

Nagarajan, R; Vasanthacharya, N Y; Gopalakrishnan, J; Rao, C N R (Pergamon-Elsevier Science Ltd, 1991-02)

It is possible to substitute Bi in the superconducting BaPb0.75Bi0.25O3 by Sb or Te without destroying the superconductivity. With Sb, a continuous series of solid solutions BaPb0.75Bi0.25−ySbyO3 (0 ≤ y ≤ 0.25) exists, ...
Synthesis and reactivity of solids - Editorial overview

Rao, C N R; Rouxel, Jean (Current Science Ltd, 1996)
Gas-sensing characteristics of ZnO and copper-impregnated ZnO

Raju, A R; Rao, C N R (Elsevier Science SA Lausanne, 1991-04)

The gas-sensing characteristics of ZnO(I) obtained commercially, as well as of ZnO(II) prepared by the dehydration of the hydroxide have been investigated by employing ESR spectroscopy and electrical conductivity measurements. ...
Studies of Molecular Interactions in the Vapour Phase by Ultraviolet Photoelectron Spectroscopy: Electronic Structures of Donor-Acceptor Complexes Including Hydrogen Bonded Dimers and van der Waals Molecules

Rao, C N R; Pradeep, T (Royal Society of Chemistry, 1991)
Structure and properties of Tl0.5Pb0.5Sr2Gd2−xCexCu2O9−δ

Vijayaraghavan, R; Michel, C; Maignan, A; Hervieu, M; Martin, C; Raveau, B; Rao, C N R (Elsevier Science BV, 1993-02-10)

A systematic study of the Tl0.5Pb0.5Sr2Gd2−xCexCu2O9−δ system has revealed the existence of a pure phase in the compositional. range 0.0≤x≤0.6 crystalizzing in the 1222 structure. It has an intersheet distance of approximately ...
The First Open-Framework Cadmium Phosphate, K4[Cd3(HPO4)4(H2PO4)2], with a Layered Structure

Jayaraman, K; Vaidhyanathan, R; Natarajan, Srinivasan; Rao, C N R (Academic Press Inc Elsevier Science, 2001-12)

A layered cadmium phosphate of the formula K4[(Cd3(HPO4)4(H2PO4)2], I, containing six-membered apertures, constituting the first example of an open-framework cadmium phosphate, has been synthesized under hydrothermal ...
Structure and dynamics of polar liquids: A molecular dynamics investigation of N,N-dimethyl formamide

Yashonath, S; Rao, C N R (Elsevier Science BV, 1991-09-01)

A molecular dynamics study of liquid N,N-dimethyl formamide has been carried out. Orientational correlation functions suggest a stacked antiparallel ordering at short distances (< 5Å) and a perpendicular + configuration ...
Chemical synthesis of solid inorganic materials

Rao, C N R (Elsevier Science BV, 1993-02)

Chemical methods of synthesis of materials play a crucial role in designing and discovering new materials and also in providing better and less cumbersome methods for preparing known materials. In this article, we shall ...
Electron transport properties of carbon nanotubes

Seshadri, Ram; Aiyer, Hemanthkumar N; Govindaraj, A; Rao, C N R (Pergamon-Elsevier Science Ltd, 1994-07)

Electrical resistivity measurements of bulk samples of carbon nanotubes show that the resistivity behaviour of nanotubes is comparable to that of graphite. Thermopower behaviour of nanotubes is similar to that of certain ...
Fe-57 Mössbauer and Mo K-EXAFS Investigations of MoxFe3-xO4, an Interesting Mixed-Valent Oxide System

Bouet, L; Tailhades, P; Rousset, A; Kannan, K R; Verelst, M; Kulkarni, G U; Rao, C N R (Academic Press Inc, 1993-02)

Ferrites of the formula MoxFe3-xO4, prepared by a soft-chemistry route, show mixed valence states of both iron and molybdenum cations. Mössbauer studies show that Fe2+ and Fe3+ ions are present on both the A and B sites, ...
Nature of the Oxygen Species at Ni(110) and Ni(100) Surfaces Revealed by Exposure to Oxygen and Oxygen-Ammonia Mixtures : Evidence for the Surface Reactivity of O- Type Species

Kulkarni, G U; Rao, C N R; Roberts, M W (American Chemical Society, 1995-03-09)

Adsorption of dioxygen at clean Ni(110) and Ni(100) surfaces gives rise to two prominent features in the O(1s) spectra at 530 and 531 eV due to O2- and O- type species, respectively. Interaction of ammonia with a Ni(100)-O ...

Now showing items 421-440 of 892

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