5 papers
Orbital fluctuations and spin-orbital-lattice coupling in Bi2Fe4O9
Aditya Prasad Roy, M. K. Chattopadhyay, Ranjan Mittal +4
Magnetic frustrations and degeneracies profoundly affect ground-state magnetic properties emerging from competing exchange interactions. Controlling such frustrations using orbital…
Wavelength-dependent anisotropic light-matter interaction in 2D ferroelectric In2Se3
Divya Jangra, Binoy Krishna De, Pragati Sharma +8
The anisotropic light-matter interactions in 2D materials have garnered significant attention for their potential to develop futuristic polarization-based optoelectronic devices, s…
Probing of Structural Phase Transitions in Barium Titanate Modified Sodium Niobate using Raman Scattering
Mrinal Jauhari, S. K. Mishra, R. Mittal +1
Raman Spectroscopic measurements are carried out to investigate the structural phase transitions as a function of composition in modified sodium niobate [(1-x) NaNbO3-xBaTiO3:NNBTx…
Negative Thermal Expansion Behaviour in MZrF6 (M=Ca, Mg, Sr): Ab-initio Lattice Dynamical Studies
M. K. Gupta, Baltej Singh, R. Mittal +1
The thermal expansion behavior of metal fluorides can be tuned by choosing appropriate metal cation. We present ab-initio lattice dynamical studies on the metal fluorides (CaZrF6,…
Phonons and Anomalous Thermal Expansion Behaviour of H2O and D2O ice Ih
M. K. Gupta, R. Mittal, Baltej Singh +4
In order to identify and quantitatively analyze the anharmonicity of phonons relevant to the anomalous thermal expansion in the Ih phase of ice, we performed neutron inelastic scat…