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Nanotubes and nanowires

Rao, C N R; Govindaraj, A; Gundiah, Gautam; Vivekchand, S R C (Pergamon-Elsevier Science Ltd, 2004-11)

Ever since the discovery of carbon nanotubes, several strategies have been developed for the synthesis of multi-walled carbon nanotubes (MWNTs) as well as single-walled carbon nanotubes (SWNTs). We examine novel methods ...

Relation between superconducting properties and structural features of cuprate superconductors

Rao, C N R; Ganguli, A K (Elsevier Science BV, 1994-12)

Interesting correlations between the superconducting transition temperatures of cuprates and various structural and electronic parameters are discussed. 123–124 transformation in oxygen-deficient 123 cuprates and some ...

Open-framework mixed dicarboxylates of lanthanum

Dan, Meenakshi; Cottereau, G; Rao, C N R (Elsevier BV, 2005-04)

A lanthanum mixed dicarboxylate of the formula [La-2(C2O4)(2)(C6H8O4)(H2O)(2)] containing metal oxalate layers connected by adipate and oxalate units has been synthesized hydrothermally. Hexagonal channels occur along the ...

Structure and Dielectric Properties of Recurrent Intergrowth Structures Formed by the Aurivillius Family of Bismuth Oxides of the Formula Bi2An−1BnO3n+3

Subbanna, G N; Row, T N G; Rao, C N R (Academic Press Inc, 1990-06)

Crystal structures and dielectric properties of three recurrent intergrowth structures Bi9Ti6CrO27, Bi9Ti6FeO27, and BaBi8Ti7O27 formed by the Aurivillius family of bismuth oxides of the formula Bi2An−1BnO3n+3 are reported. ...

Preface - Transition-Metal Compounds : Insulators, Metals, Superconductors

Rao, C N R (Academic Press Inc, 1990-09)

Thermally Induced Phase Transitions of CsHSO4 : A Reexamination

Rangavittal, N; Row, T N Guru; Rao, C N R (Academic Press Inc, 1995-07)

A reexamination of the thermally induced phase transitions of CsHSO4 shows that the room-temperature phase IV transforms to II around 373 K. Phase III is, however, not obtained by heating IV to 340 K. Phases IV and III can ...

Oxidation of methanol on the surfaces of model Cu/ZnO catalysts containing Cu1+ and Cu0 species

Harikumar, K R; Rao, C N R (Baltzer Science Publishers BV, 1997)

Interaction of CH3OH with Cu clusters deposited on ZnO films grown on a Zn foil as well as on a ZnO(0001)-Zn crystal, has been examined by X-ray photoelectron spectroscopy. On clean Cu clusters, reversible molecular ...

Special Issue - Molecular-Spectroscopy And Molecular-Structure - A Collection Of Invited Papers In Honor Of W J Orville-Thomas

Barnes, A J; Rao, C N R; Ratajczak, H (Elsevier Science BV, 1989)

Special Issue of the Journal of Molecular Structure to its founding editor, who has contributed so much to molecular spectroscopy and structure.

Iron, cobalt and nickel nanoparticles encapsulated in carbon obtained by the arc evaporation of graphite with the metals

Seshadri, Ram; Sen, Rahul; Subbanna, G N; Kannan, K R; Rao, C N R (Elsevier Science BV, 1994-12-23)

Are evaporation of graphite with Fe, Co and Ni yields two distinct types of metal nanoparticles, wrapped in graphitic layers and highly resistant to oxidation. Electron microscopy shows that the metal particles (10-40 nm) ...

Preparation Of Buckministerfullerene, C-60

Pradeep, T; Rao, C N R (Pergamon Elsevier Science Ltd, 1991-10)

In view of the great interest generated by the recent discovery of closed-cage molecules of carbon (fullerenes), we describe a procedure for preparing nearly pure buckminsterfullerene, C60, which has considerable potential ...

Synthesis and reactivity of solids - Editorial overview

Rouxel, Jean; Rao, C N R (Current Science Ltd, 1997-04)

Special Issue - Spectroscopy, Theoretical Chemistry And Molecular-Structure - A Collection Of Invited Papers In Honor Of K S Pitzer

Rao, C N R; Thomas, W J Orville (Elsevier Science BV, 1989-03)

Special issue of the Journal of Molecular Structure to Professor Kenneth Pitzer on the occasion of his 75th birthday.

Zirconia nanotubes

Rao, C N R; Satishkumar, B C; Govindaraj, A (Royal Society Chemistry, 1997-08-21)

Hollow nanotubes of zirconia as well as of yttria-stabilized zirconia are successfully prepared by first coating the carbon nanotubes appropriately with the oxidic material and then burning off the carbon of the template.

Crystalline silica nanowires

Deepak, F L; Gundiah, Gautam; Seikh, Md Motin; Govindaraj, A; Rao, C N R (Materials Research Society, 2004-08)

α-Cristobalite nanowires of 50–100 nm diameter with lengths of several microns have been synthesized for the first time by the solid-state reaction of fumed silica and activated charcoal. The nanowires have been characterized ...

Effect of substituting Ru4+ and other tetravalent ions in the B-site of rare earth manganates on the magneto-transport properties and charge-ordering

Vanitha, P V; Arulraj, Anthony; Raju, A R; Rao, C N R (Editions Scientifiques Medicales Elsevier, 1999-11)

Substitution of Ti and Zr in the B-site of La0.7Ca0.3MnO3 lowers the TC and the temperature of insulator—metal transition. Substitution of Ru in the B-site of La0.7Ca0.3MnO3, however, does not alter the TC or TIM significantly. ...

Giant Magnetoresistance, Charge Ordering And Other Novel Properties Of Perovskite Manganates

Rao, C N R; Mahesh, R; Raychaudhuri, A K; Mahendiran, R (Pergamon Elsevier Science Ltd, 1998-04)

Giant magnetoresistance (GMR) and related properties of manganate perovskites of the general formula Lnl − xAxMnO3 (Ln = rare earth; A = divalent ion) are discussed in detail. There is a fine interplay of magnetic exchange, ...

A layered zinc oxalate possessing a 12-membered honeycomb aperture, stabilized by an amine and an alkali cation

Vaidhyanathan, R; Natarajan, Srinivasan; Rao, C N R (Editions Scientifiques Medicales Elsevier, 2002-05)

A new layered anionic zinc oxalate of the formula, K[C6N2H13][Zn-2(C2O4)(3)].4H(2)O containing 12-membered honeycomb apertures has been synthesized hydrothermally in the presence of DABCO and K+. A noteworthy feature of ...

Charge ordering in the rare-earth manganates: the origin of the extraordinary sensitivity to the average radius of the A-site cations, 〈rA〉

Arulraj, A; Santhosh, P N; Gopalan, R S; Guha, A; Raychaudhuri, A K; Kumar, N; Rao, C N R (IOP Publishing Ltd, 1998-09-28)

The charge ordering in Nd0.5Sr0.5MnO3 (〈rA〉 = 1.24 Å), which occurs on cooling the ferromagnetic metallic ground state, is readily destroyed on application of a magnetic field of 6 T. For Y0.5Ca0.5MnO3 (〈rA〉 = 1.13 Å), for ...

Effect of cation size and size-disorder on the magnetic and electron transport properties of La(0.7-x)Ln(x)Sr(0.3)MnO(3) (Ln = Gd and Dy)

Seikh, Md Motin; Sudheendra, L; Rao, C N R (Elsevier Science BV, 2004-06)

Magnetic and electron transport properties of La0.7−xLnxSr0.3MnO3 with Ln=Gd and Dy have been investigated over a wide range of compositions to explore the effects of the radius of the A-site cation, 〈rA〉, and the size-disorder ...

A Raman study of the temperature-induced low-to-intermediate-spin state transition in LaCoO3

Seikeh, Md Motin; Sudheendra, L; Narayana, Chandrabhas; Rao, C N R (Elsevier Science BV, 2004-11-12)

The effect of the thermally induced spin-state transition on the phonon mode behavior of LaCoO3 has been investigated by using Raman spectroscopy. The number of observed Raman modes is larger than the number predicted by ...

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