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R Mukhopadhyay
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Volume 14 Issue 3 June 1991 pp 603-605 International Conference On Superconductivity—II
Inelastic neutron scattering from Tl2CaBa2Cu2O8
S L Chaplot B A Dasannacharya R Mukhopadhyay K R Rao P R Vijayaraghavan R M Iyer G M Phatak J V Yakhmi
Coherent inelastic neutron scattering measurements have been carried out on the high temperature superconductors Tl2CaBa2Cu2O8 (Tl-2122,
T c =107 K) and YBa2Cu3O7 (Y-123,T c =92 K), at the Dhruva reactor at Trombay. The density of phonon states in Tl-2122 is enhanced at 6–17 meV and reduced at 40–70meV compared to that in Y-123. -
Volume 20 Issue 4 July 1997 pp 441-449
Quantum molecular tunneling of NH4+ ions in mixed ammonium-alkali halide systems
The rotational excitations of NH4+ ions in dilute solution in metal alkali halide lattices have been studied at 4K by inelastic neutron scattering technique. It is found that the ions exist in matrix isolation at very low ammonium ion concentration,
c (c → 0), and it transforms to orientational glass phase on increase ofc . It is shown that the onset of the orientational glass phase is moderated through the strain field generated by the substituted impurity in the lattice. The variation of the intensity profiles with increase ofc have been successfully explained by a phenomenological model based on gaussian distributed heights.
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Bulletin of Materials Science
Volume 46, 2023
All articles
Continuous Article Publishing mode
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Bulletin of Materials Science | News
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
Physical Sciences 2020 -
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Posted on July 25, 2019Click here for Editorial Note on CAP Mode
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