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

Now showing items 141-160 of 892

Insulator–metal transitions induced by electric and magnetic fields, in thin films of charge-ordered Pr1-xCaxMnO3

Parashar, S; Ebenso, E E; Raju, A R; Rao, C N R (Pergamon-Elsevier Science Ltd, 2000)

Thin films of charge-ordered manganates, Pr1-xCaxMnO3 (x = 0.3, 0.4) are shown to undergo electric current-induced insulator-metal (I-M) transitions, the transition temperature increasing with the current. The occurrence ...
Novel series of thallium cuprate superconductors

Ganguli, A K; Vijayaraghavan, R; Rao, C N R (Elsevier Science BV, 1989-12)

The TlCa1−x Lnx Sr2 Cu2 O7+δ(Ln = rare earth) system shows electron-superconductivity when x= 0.25 and hole-superconductivity when x > 0.25. The Tc is generally in the 60–90K in both these regimes. TlSr2−x Lax CuOy (1021) ...
Synthesis and structures of Co-II, Ni-II, and Cu-II coordination frameworks formed by a flexible 1,3-phenylenediacetic acid ligand

Nagaraja, C M; Maji, T K; Rao, C N R (Elsevier Science BV, 2010-07-15)

Three new compounds of CoII, NiII and CuII with a flexible dicarboxylate building block 1,3-phenylenediacetate, along with 4,4′-bipyridine, or 4,4′-trimethylenedipyridine co-ligands, with the formula {[Co2(4,4′-bipy)2(1, ...
Charge-order-driven multiferroic properties of Y1-xCaxMnO3

Sahu, Jyoti Ranjan; Serrao, Claudy Rayan; Ghosh, Anirban; Sundaresan, A; Rao, C N R (Pergamon-Elsevier Science Ltd, 2009-01)

Dielectric measurements on the charge-ordered insulators, Y1-xCaxMnO3 (x = 0.4. 0.45 and 0.5), show maxima in the dielectric constant around the charge ordering transition temperature while magnetic measurements show the ...
Implications and consequences of ferromagnetism universally exhibited by inorganic nanoparticles

Sundaresan, A; Rao, C N R (Pergamon-Elsevier Science Ltd, 2009-08)

The occurrence of surface ferromagnetism in inorganic nanoparticles as a universal property not only explains many of the unusual magnetic features of oxidic thin films, but also suggests its possible use in creating new ...
Nanoparticles of superconducting γ-Mo2N and δ-MoN

Gomathi, A; Sundaresan, A; Rao, C N R (Academic Press Inc Elsevier Science, 2007-01)

We have been able to prepare nanoparticles (∼4 nm diameter) of cubic γ-Mo2N by a simple procedure involving the reaction of MoCl5 with urea at 873 K. The nanoparticles show a superconducting transition around 6.5 K. The ...
Synthesis and optical properties of In-doped GaN nanocrystals

Bhat, S V; Biswas, Kanishka; Rao, C N R (Pergamon-Elsevier Science Ltd, 2007-02)

Indium-doped GaN nanocrystals with 5% and 10% In have been prepared by a low temperature solvothermal method using hexamethyldisilazane as the nitriding reagent. The nanocrystals show Raman bands at lower frequencies ...
Three-dimensional open-framework Co-II and Zn-II phosphates synthesized via the amine phosphate route

Natarajan, Srinivasan; Neeraj, S; Rao, C N R (Editions Scientifiques Medicales Elsevier, 2000-01)

The reaction of amine phosphates with metal ions, under mild conditions, has been utilized for the synthesis of open-framework phosphates. Two new amine phosphates, DABCO-phosphate and imidazole-phosphate, synthesized for ...
A comparative study of the interaction of oxygen with clusters and single-crystal surfaces of nickel

Rao, C N R; Vijayakrishnan, V; Kulkarni, G U; Rajumon, M K (Elsevier Science BV, 1995-03)

The interaction of oxygen with Ni(100), (110) and (111) surfaces as well as with Ni clusters of varying sizes has been investigated by employing core-level spectroscopy. On single-crystal surfaces, the main oxygen species ...
Preparation of lamellar and hexagonal forms of mesoporous silica and zirconia by the neutral amine route: Lamellar-hexagonal transformation in the solid state

Ulagappan, N; Neeraj; Raju, B V N; Rao, C N R (Royal Society Chemistry, 1996-10-07)

The chain length of the surfactant and the solvent composition are two of the factors that determine whether the lamellar or the hexagonal form of mesoporous SiO2 (or ZrO2) is formed by the neutral amine route; a ...
Isolation of a Zinc Phosphate Primary Building Unit, [C6N2H18]2+[Zn(HPO4)(H2PO4)2]2−, and Its Transformation to an Open-Framework Phosphate, [C6N2H18]2+[Zn3(H2O)4(HPO4)4]2−

Neeraj, S; Natarajan, Srinivasan; Rao, C N R (Academic Press Inc, 2000-03)

A 4-membered ring zinc phosphate monomer, I, [C6N2H18](2+) [Zn(HPO4) (H2PO4)(2)](2-), has been isolated by the reaction of the Zn2+ with the amine, N,N,N',N'-tetramethylethylenediamine (TMED) and H3PO4 at room temperature ...
Solvothermal synthesis of nanorods of ZnO, N-doped ZnO and CdO

Varghese, Neenu; Panchakarla, L S; Hanapi, M; Govindaraj, A; Rao, C N R (Pergamon-Elsevier Science Ltd, 2007-12-04)

ZnO nanorods with diameters in the 80-800 nm range are readily synthesized by the reaction of zinc acetate, ethanol and ethylenediamine under solvothermal conditions. The best products are obtained at 330 degrees C with a ...
Growth of Nanometric Gold Particles in Solution Phase

Seshadri, Ram; Subbanna, G N; Vijayakrishnan, V; Kulkarni, G U; Ananthakrishna, G; Rao, C N R (American Chemical Society, 1995)

The time evolution of colloidal gold particles in the nanometric regime has been investigated by employing electron microscopy and electronic absorption spectroscopy. The particle size distributions are essentially Gaussian ...
Preface - Festschrift in Honor of John Meurig Thomas

Rao, C N R (Academic Press Inc, 1993-09)
Thin films of Ln(1-x)Sr(x)CoO(3) (Ln = La, Nd and Gd) and SrRuO3 by nebulized spray pyrolysis

Ebenso, E E; Sardar, Kripasindhu; Chandrasekhar, M; Raju, A R; Rao, C N R (Editions Scientifiques Medicales Elsevier, 2000-12)

Thin films of La1-xSrxCoO3, Nd0.5Sr0.5CoO3, Gd0.5Sr0.5CoO3 and SrRuO3 have been deposited on Si(100), LaAlO3(100) and SrTiO3(100) single crystal substrates by nebulized spray pyrolysis. The films deposited on Si are generally ...
Composition dependence of giant magnetoresistance in La1-xCaxMnO3 (0.1 ≤ x ≤ 0.9)

Mahendiran, R; Mahesh, R; Raychaudhuri, A K; Rao, C N R (Elsevier Science, 1995-05)

We have studied the resistivity (ρ) and the magnetoresistance (MR) in sintered samples of La1−xCaxMnO3 for 0.1≤x≤0.9 in the temperature range 4.2K≤T≤400K in magnetic fields H≤6T. We have observed giant negative magnetoresistance ...
Dynamics of charge transfer in the excited amine complexes of the fullerenes C60 and C70.: A picosecond laser flash photolysis study

Palit, D K; Ghosh, H N; Pal, H; Sapre, A V; Mittal, J P; Seshadri, Ram; Rao, C N R (Elsevier Science BV, 1992-10-02)

In benzene solution, C60 and C70 interact weakly in the ground state with amines having favourable oxidation potentials. Picosecond time-resolved absorption measurements show that on photoexcitation, the weak complexes ...
Scanning tunneling microscopy and spectroscopy of C70 thin films

Aiyer, Hemanthkumar N; Govindaraj, A; Rao, C N R (Indian Academy Of Sciences, 1994-11)

Scanning tunneling microscopy of C-70 films deposited on HOPG and gold substrates has been carried but to investigate the 2D packing, defects and disorder. Besides providing direct evidence for orientational disorder, high ...
An investigation of transition metal clusters deposited on graphite and metal oxide substrates by a combined use of XPS, UPS and Auger spectroscopy

Vijayakrishnan, V; Rao, C N R (Elsevier Science BV, 1991-09)

Cu and Ni clusters deposited on graphite and metal oxide (TiO2, Al2O3) supports have been investigated by X-ray and UV photoelectron spectroscopy as well as Auger electron spectroscopy. The 2p core-level binding energy of ...
Tunneling studies on single crystals of superconducting Bi2Ca1−xYxSr2Cu2O8+δ

Srikanth, H; Raychaudhuri, A K; Rao, C R Venkateswara; Ramasamy, P; Aiyer, Hemantkumar N; Rao, C N R (Elsevier Science BV, 1992-10-01)

Tunneling studies have been carried out on single crystals of Bi2Ca1−xSrxCu2O8+δ over a wide range of compositions wherein the hole concentration varies by a factor of 2.5. The 2Δ value varies between 25 meV and 75 meV ...

Now showing items 141-160 of 892

Search DSpace

Advanced Search

Browse

All of DSpace
This Community
- By Issue Date
- Authors
- Titles
- Subjects

Recently added

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

Search DSpace

Browse

All of DSpace

This Community

My Account