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

Now showing items 781-800 of 892

Effect of Electronic Coupling Between CdSe Nanocrystals on the Photoluminescence Spectra

Voggu, Rakesh; Pati, Swapan K; Rao, C N R (American Scientific Publishers, 2009)

Different types of aggregates of CdSe nanoparticles have been assembled by using bridging molecules such as thiolcarboxylic acids and alkanedithiols as by well as the click reaction involving cycloaddition between azido ...
Core–shell nanoparticles based on an oxide metal: ReO3@Au (Ag) and ReO3@SiO2 (TiO2)

Ghosh, Sandeep; Biswas, Kanishka; Rao, C N R (Royal Society Chemistry, 2007-06-21)

Core-shell nanoparticles based on metallic ReO3 nanoparticles have been prepared for the first time. The nanoparticles with the metallic shell viz. ReO3@Au and ReO3@Ag were prepared by the reduction of metal salts over ...
Organically-Templated Zinc and Thorium Sulfates with Chain and Layered Structures

Behera, J N; Rao, C N R (Wiley-VCH Verlag GmbH, 2005)

Amine-templated zinc sulfates of the formulae, [Zn(SO4)(H2O)(2)(C10N2H8)] (1) and [C3N2H12][Zn(SO4)] (11) both with linear structures have been prepared under hydro/solvothermal conditions. Of these, I has the chain structure ...
Hexadecyltriethoxysilane-induced Dispersions of Metal Oxide Nanoparticles in Nonpolar Solvents

Gomathi, A; Rao, C N R (Springer/Plenum Publishers, 2008-03)

Nanoparticles of CeO2, Fe3O4, TiO2 and ZnO get coated by hexadecyltriethoxysilane on refluxing the nanoparticles and the organosilane in a hydrocarbon solvent. The organosilane-coated metal oxide nanoparticles give stable ...
Rare earth chromites: a new family of multiferroics

Sahu, Jyoti Ranjan; Serrao, Claudy Rayan; Ray, Nirat; Waghmare, Umesh V; Rao, C N R (Royal Society of Chemistry, 2007)

Heavy rare earth chromites of the formula LnCrO(3) with Ln = Ho, Er, Yb, Lu and Y are shown to be multiferroic, exhibiting canted antiferromagnetism at low temperatures (T-N = 113-140 K) and a ferroelectric transition in ...
Glassy behaviour of the ferromagnetic and the non-magnetic insulating states of the rare earth manganates Ln0.7Ba0.3MnO3 (Ln = Nd or Gd)

Kundu, Asish K; Nordblad, P; Rao, C N R (IOP Publishing Ltd, 2006-05-24)

While La0.7Ba0.3MnO3 is a ferromagnetic metal (T-C = 340 K) with long-range ordering, Nd0.7Ba0.3MnO3 shows a transition around 150 K with a small increase in magnetization, but remains an insulator at all temperatures. ...
Enhancement of ferromagnetism by Co and Ni substitution in the perovskite LaBiMn2O6+d

Kundu, Asish K; Pralong, V; Caignaert, V; Rao, C N R; Raveau, B (Royal Society Chemistry, 2007)

The substitution of cobalt and nickel for manganese in the perovskite manganate LaBiMn2O6+delta. has been realized, leading to the perovskites LaBiMn2-MxO6+delta, with M = Co, Ni and 0 <= x <= 2/3. In contrast to the ...
Room temperature hydrogen and hydrocarbon sensors based on single nanowires of metal oxides

Rout, Chandra Sekhar; Kulkarni, G U; Rao, C N R (IOP Publishing Ltd, 2007-05-07)

Hydrogen sensing characteristics of single nanowires of ZnO, TiO2 and WO2.72 have been investigated by contact mode atomic force microscopy. All these nanostructures are able to sense hydrogen, but the WO2.72 nanowire ( ...
Magnetoelectric effect in rare earth ferrites, LnFe2O4

Serrao, Claudy Rayan; Sahu, Jyoti Ranjan; Ramesha, K; Rao, C N R (American Institute of Physics, 2008-07-01)

Dielectric and magnetic properties of selected rare earth ferrites, LnFe(2)O(4) (Ln=Y,Er,Yb), have been investigated. All these materials show ferroelectricity near the ferrimagnetic transition temperature around 250 K. ...
The Problem of Purifying Single-Walled Carbon Nanotubes

Vivekchand, S R C; Jayakanth, R; Govindaraj, A; Rao, C N R (Wiley-VCH Verlag GmbH, 2005-09)

In search of purity: As technologies requiring the use of carbon nanotubes become more refined, the purity of the nanotubes becomes an ever-increasingly important factor. This Highlight not only takes a look at some attempts ...
Synthesis, structure and magnetic properties of an amine-templated Mn2+ (S = 5/2) sulfate with the Kagome structure

Behera, J N; Rao, C N R (Royal Society of Chemistry, 2007)

In pursuit of a compound with the Kagome structure, formed by a non-Fe3+ transitional metal ion with a spin of 5/2, we have synthesized an amine-templated Mn2+ sulfate under solvothermal conditions. This compound with a ...
Supramolecular Organization in Lead Bromide Salts of Imidazolium-Based Ionic Liquids

Thirumurugan, A; Rao, C N R (American Chemical Society, 2008-05)

By heating imidazolium bromide-based ionic liquids with lead(II) salts under ionothermal conditions, we have been able to obtain two imidazolium bromoplumbates, (EMIm)PbBr3, I, and (BMIm)(2)PbBr4, II, where EMIm and BMIm ...
Electrical and Hydrogen-Sensing Characteristics of Field Effect Transistors Based on Nanorods of ZnO and WO2.72

Rout, Chandra Sekhar; Kulkarni, G U; Rao, C N R (American Scientific Publishers, 2009-09-01)

Top-gated field effect transistors (FETs) using Au-gap (5 μm) electrodes on glass substrate and SiO2/Si as gate have been fabricated with undoped and doped nanorods of ZnO as well as with WO2.72 nanorods as active semiconductor ...
Use of Ionic Liquids in the Synthesis of Nanocrystals and Nanorods of Semiconducting Metal Chalcogenides

Biswas, Kanishka; Rao, C N R (Wiley Blackwell, 2007)

We have synthesized nanoparticles of hexagonal US in the diameter range 3-13 nm by the reaction of cadmium acetate dihydrate with thioacetamide in imidazolium [BMIM]-based ionic liquids. We have obtained three different ...
Changes in the electronic structure and properties of graphene induced by molecular charge-transfer

Das, Barun; Voggu, Rakesh; Rout, Chandra Sekhar; Rao, C N R (Royal Society Chemistry, 2008)

Interaction with electron-donor and -acceptor molecules such as aniline and nitrobenzene brings about marked changes in the D, G, G' and 2D bands of the Raman spectrum and the electronic structure of graphene, prepared by ...
Some Novel Attributes of Graphene

Rao, C N R; Sood, A K; Voggu, Rakesh; Subrahmanyam, K S (American chemical Society, 2010-01-21)

Graphene has generated, great sensation due to its amazing properties, and extensive research is being pursued on single as well as bi- and few-layer graphenes. In this Perspective, we highlight some aspects of graphene ...
A single molecule switch based on two Pd nanocrystals linked by a conjugated dithiol

Agrawal, Ved Varun; Thomas, Reji; Kulkarni, G U; Rao, C N R (Indian Academy of Sciences, 2005-11)

Tunneling spectroscopy measurements have been carried out on a single molecule device formed by two Pd nanocrystals (dia. similar to 5 nm) electronically coupled by a conducting molecule, dimercaptodiphenylacetylene. The ...
Maleate–fumarate conversion and other novel aspects of the reaction of a Co(II) maleate with pyridine and bipyridine

Padmanabhan, M; Josephx, James C; Thirumurugan, A; Rao, C N R (Royal Society of Chemistry, 2008)

Reaction of a molecular Co(II) maleate, [Co(Hmal)(2)(H2O)(4)], with pyridine yields a Co(II) fumarate, [Co(fum)(H2O)(4)], with a chain structure and a chiral pyridylsuccinic acid zwitter ion, -OOC-CH(N+C5H5)-CH2-COOH, in ...
Magnetic Properties of a Ni2+ Kagome System

Behera, J N; Sundaresan, A; Pati, Swapan K; Rao, C N R (Wiley-VCH Verlag GmbH, 2007-02-02)

Magnetic frustration: The diverse nature of interactions occurring within kagome structures arise due to the interplay between the frustrated kagome geometry and the integer spin moment of the magnetic ions (see figure ...
A Brillouin study of the temperature-dependence of the acoustic modes across the insulator–metal transitions in V2O3 and Cr-doped V2O3

Seikh, Md Motin; Narayana, Chandrabhas; Sood, A K; Murugavel, P; Kim, M W; Metcalf, P A; Honig, J M; Rao, C N R (Pergamon Elsevier Science Ltd, 2006-06)

Brillouin scattering studies have been carried out on high-quality single crystals of undoped and 0.9% Cr-doped V2O3. The observed modes in both the samples at not, vert, similar12 and not, vert, similar60 GHz are associated ...

Now showing items 781-800 of 892

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