172 citations · 818 across the 34 of their papers we have counts for
34 papers
Phonons and Anomalous Lattice Behaviour in KMnAg3(CN)6 and KNiAu3(CN)6: Inelastic Neutron Scattering and First-Principles Calculations
Baltej Singh, Mayanak K. Gupta, Ranjan Mittal +4
Cyanide based framework compounds are known to show large negative thermal expansion behaviour. Here we report the phonon and anomalous lattice behavior of two metal cyanide framew…
Anomalous Thermal Expansion, Negative Linear Compressibility and High-Pressure Phase Transition in ZnAu2(CN)4: Neutron Inelastic Scattering and Lattice Dynamics Studies
Mayanak K. Gupta, Baltej Singh, Ranjan Mittal +5
We present temperature dependent inelastic neutron scattering measurments, accompanied byab-initio calculations of phonon spectra and elastic properties as a function of pressure t…
Role of Phonons in Li-Diffusion, Thermal Expansion and Phase Transitions in beta-eucryptite: Inelastic Neutron Scattering and Lattice Dynamics Studies
Baltej Singh, Mayanak Kumar Gupta, Ranjan Mittal +7
Beta eucryptite (LiAlSiO4) shows one-dimensional super-ionic conductivity as well as anisotropic thermal expansion behavior. We have performed inelastic neutron scattering measurem…
Non-adiabatic effects in the phonon dispersion of Mg 1--x Al x B 2
Matteo D'Astuto, Rolf Heid, Burkhard Renker +7
Superconducting MgB shows an E zone center phonon, as measured by Raman spectroscopy, that is very broad in energy and temperature dependent. The Raman shift and lifet…
Spin-Phonon Coupling and High-Temperature Phase Transition in Multiferroic Material YMnO3
Mayanak Kumar Gupta, Ranjan Mittal, Mohamed Zbiri +4
We have carried out temperature-dependent inelastic neutron scattering measurements of YMnO3 over the temperature range 50 - 1303 K, covering both the antiferromagnetic to paramagn…
New Insights into the Compressibility and High-Pressure Stability of Ni(CN)2 from Neutron Diffraction, Raman Spectroscopy and Inelastic Neutron Scattering
S. K. Mishra, R. Mittal, M. Zbiri +7
The layered structure of tetragonal Ni(CN)2, consisting of square-planar Ni(CN)4 units linked in the a-b plane, with no true periodicity along the c-axis, is expected to show aniso…