DSpace Home
→
Prof. C.N.R. Rao's Publications
→
Research Papers (Prof. C.N.R. Rao)
→
Browsing Research Papers (Prof. C.N.R. Rao) by Issue Date

Browsing Research Papers (Prof. C.N.R. Rao) by Issue Date

Now showing items 1-20 of 877

Investigation of novel cuprates of the TlCa1-xLnxSr2Cu2O7- δ (Ln=rare earth) series showing electron- or hole-superconductivity depending on the composition

Vijayaraghavan, R; Ganguli, A K; Vasanthacharya, N Y; Rajumon, M K; Kulkarni, G U; Sankar, G; Sarma, D D; Sood, A K; Narayana, Chandrabhas; Rao, C N R (IOP Publishing Ltd, 1989)

Superconductivity in cuprates of the general formula TlCa1-xLnxSr2Cu2O7+ delta has been investigated as a function of Ln and x. Compositions with 0.25<or=x<or=0.8 are superconducting for all Ln with Tc in the range 60-90 ...
Evolution Of Magnetic Order In The System Lani1-Xmnxo3 (x < 0.10)

Vasanthacharya, N Y; Raychaudhuri, A K; Ganguly, P; Rao, C N R (Elsevier Science BV, 1989)

Magnetic susceptibility measurements on dilute solid-solutions LaNi1-xMnxO3 (x < 0.1) have been carried out. With increasing x the magnetic susceptibility behaviour changes from Pauli paramagnetic to Curie-Weiss type. The ...
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.
A neutron diffraction study of the superconductor, Tl0.5Pb0.5CaSr2Cu2Oy

Ganguli, A K; Nanjundaswamy, K S; Rao, C N R; Sequeira, A; Rajagopal, H (Pergamon-Elsevier Science Ltd, 1989)

The structure of Tl0.5Pb0.5CaSr2Cu2Oy (Tc = 90K) has been investigated by neutron diffraction profile analysis and the results discussed in the light of the structures of TlCaBa2CuP2Cy and TlCa0.5Y0.5Ba2Cu2Oy. We find no ...
EXAFS of catalytic materials

Sankar, G; Kulkarni, G U; Rao, C N R (Pergamon-Elsevier Science Ltd, 1989)
A study of the electronic structures of n-v addition compounds of BH3 by a combined use of ups and eels

Pradeep, T; Sreekanth, C S; Hegde, M S; Rao, C N R (Elsevier Science BV, 1989)

Orbital energies and electronic transition energies of BH3·H2S and BH3·CO obtained from ultraviolet (HeI) photoelectron spectroscopy and electron energy loss spectroscopy are discussed in the light of quantum mechanical ...
Superconductivity in Bi-Ca-Y-Sr-Cu-O (2122) and Tl-Ca-Y-Ba-Cu-O (1122) systems: Effect of substitution of Ca by Y+

Ganguli, A K; Nagarajan, R; Nanjundaswamy, K S; Rao, C N R (Pergamon-Elsevier Science Ltd, 1989-01)

Effect of substitution of Ca by Y on the properties of TlCaBa2Cu2O7 (1122) and Bi2CaSr2Cu2O8+δ (2122) has been studied. Lattice parameters vary progressively with increase in Y concentration in both the systems. In ...
Novel features of rapidly quenched melts of Bi2(Ca,Sr)3Cu2O8+δ

Varma, K B R; Rao, K J; Rao, C N R (American Institute of Physics, 1989-01-02)

By roller quenching and water quenching melts of Bi2(Ca, Sr)3Cu2O8+δ, glasses have been obtained. These glasses exhibit two glass transitions as well as two crystallization transitions. Microwave absorption studies show ...
Superconductivity in layered nickel oxides

Rao, C N R; Ganguli, A K; Nagarajan, R (Indian Academy of Sciences, 1989-02)

Likely presence of superconductivity in layered nickelates of K2NiF 4 structure is pointed out.
A series of metallic oxides of the formula La3LnBaCu5O13+δ (Ln = rare earth or Y)

Vijayaraghavan, R; Ram, Ram; Rao, C N R (Academic Press Inc, 1989-02)

Oxides of the formula La3LnBaCu5O13+δ (Ln = Nd, Sm, Gd, Dy, or Y) exhibiting metallic resistivity have been prepared and characterized. In the case of yttrium, a composition close to La2Y2BaCu5O13+δ, which is also metallic, ...
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.
Structural Aspects of High-Temperature Cuprate Superconductor

Rao, C N R; Raveau, B (American Chemical Society, 1989-03)

High-temperature superconductivity constitutes the most sensational discovery of recent times. Since these new superconductors are complex metal oxides, chemistry has had a big role to play in the investigations. For the ...
Evidence for holes on oxygen in some nickel oxides

Rao, G Ranga; Hegde, M S; Sarma, D D; Rao, C N R (IOP Publishing Ltd, 1989-03-20)

Core-level spectroscopic studies show the presence of holes on oxygen in LaNiO, and LiNi02. Nickel in these oxides seems to be essentially in the 2+ state instead of the 3+ state-where it would formally be expected to ...
An ultraviolet photoelectron spectroscopic study of BF3–donor complexes

Pradeep, T; Sreekanth, C S; Rao, C N R (American Institute of Physics, 1989-04-01)

He i spectra of strong n–v type adducts of BF3 with H2O, CH3OH, (C2H5)2O, and CH3CN as well as of weak complexes of BF3 with NO and H2S are reported along with assignments based on MO calculations. The energy of the fluorine ...
Evidence for two distinct orthorhombic structures associated with different Tc regimes in LnBa2Cu3O7 − δ (Ln = Nd, Eu, Gd and Dy): A study of the dependence of superconductivity on oxygen stoichiometry

Nagarajan, R; Vijayaraghavan, R; Ganapathi, L; Ram, Ram; Rao, C N R (Elsevier Science BV, 1989-05-01)

Superconductivity in LnBa2Cu3O7 − δ with Ln = Nd, Eu, Gdand Dy has been investigated as a function of δ, closely following the accompanying changes in crystal structure. Orthorhombic GdBa2Cu3O7 − δ and DyBa2Cu3O7 − δ show ...
Nature of copper in the new cuprate superconductors Pb2Sr2Ca1-xLxCu3O8+δ

Rao, C N R; Bhat, V; Nagarajan, R; Rao, G Ranga; Sankar, G (American Physical Society, 1989-05-01)

Based on Cu K-edge absorption spectroscopy as well as Cu(2p3/2) and Cu(LVV) Auger spectroscopies it is shown that the recently discovered Pb2Sr2Ca1-xLxCu3O8+δ (L=Y or Lu) superconductors contain well-defined Cu1+ species ...
A core-level photoemission spectroscopic study of the electron-doped superconductor, Nd2-xCexCuO4-δ

Rajumon, M K; Sarma, D D; Vijayaraghavan, R; Rao, C N R (Pergamon-Elsevier Science Ltd, 1989-06)

A photoemission study of superconducting Nd1.85Ce0.15CuO4-δ shows that Ce in the cuprate is essentially in the 4+ state. While the electron donated by Ce does not appear to affect the Cu 3d band, we still find evidence for ...
Neutron diffraction evidence for oxygen dimers in Bi-Ca-Sr-Cu-O superconductors

Sequeira, A; Rajagopal, H; Nagarajan, R; Rao, C N R (Elsevier Science BV, 1989-06-01)

A comparative neutron diffraction study of Bi2CaSr2Cu2O8+δ, Bi2Ca2SrCu2O8+δ and Bi2Ca1.5Y0.5SrCu2O8+δ has not only shown the presence of considerable oxygen excess in the Bi layers, but also evidence for oxygen pairing ...
Physical chemistry of high-temperature oxide superconductors

Ramakrishnan, T V; Rao, C N R (American Chemical Society, 1989-06-01)
Raman and infrared spectroscopic studies of the low- and high-temperature forms of octahalo cyclic phosphazene tetramers, P4N4Cl8 and P4N4F8

Varma, Vijay; Fernandes, J R; Rao, C N R (Elsevier Science BV, 1989-07)

Based on a study of the Raman and infrared spectra, normal vibrations of the low-temperature skew-tub (S4) and high-temperature Ci or C2h (skew-chair) forms of P4N4Cl8 have been assigned. A temperature variation study of ...

Now showing items 1-20 of 877

Search DSpace

Advanced Search

Browse

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

Browsing Research Papers (Prof. C.N.R. Rao) by Issue Date

Browsing Research Papers (Prof. C.N.R. Rao) by Issue Date

Search DSpace

Browse

All of DSpace

This Collection

My Account