114 citations · 896 across the 69 of their papers we have counts for
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Pbnm to R3-c phase transformation in (1-x)LaFeO3.xLaMnO3 solid solution due to modifications in structure, octahedral tilt and valence states of Fe-Mn
E. G. Rini, Mayanak. K. Gupta, R. Mittal +3
A theoretically supported experimental study of the (1-x)LaFeO3.xLaMnO3 (LFO-LMO) solid solution is being reported for the first time which reveals a phase transformation from the…
Revisiting 70 years of lattice dynamics of BaTiO3: Combined first principle and experimental investigation
Vivek Dwij, Binoy Krishna De, Gaurav Sharma +4
BaTiO3 is a classical ferroelectric studied for last one century for its ferroelectric properties. Lattice dynamics of BaTiO3 is crucial as the utility of devices is governed by ph…
Neutron-Irradiation Induced Magnetization and Persistent Defects at High Temperatures in Graphite
Ranjan Mittal, Mayanak K. Gupta, Sanjay K. Mishra +8
Structural as well as magnetization studies have been carried out on graphite samples irradiated by neutrons over 50 years in the CIRUS research reactor at Trombay. Neutron diffrac…
Phonons and Lithium diffusion in LiAlO
Mayanak K. Gupta, Ranjan Mittal, Baltej Singh +5
We report on investigations of phonons and lithium diffusion in LiAlO based on inelastic neutron scattering (INS) measurements of the phonon density of states (DOS) in γ-LiAlO$…
Anharmonic Phonons and Anomalous Thermal Expansion of Graphite
Ranjan Mittal, Mayanak K. Gupta, Baltej Singh +2
We have investigated the anisotropic thermal expansion of graphite using ab-initio calculation of lattice dynamics and anharmonicity of the phonons, which reveal that the negative…
Spin-Phonon Coupling and Thermodynamic Behaviour in YCrO3 and LaCrO3: Inelastic Neutron Scattering and Lattice Dynamics
Mayanak K. Gupta, Ranjan Mittal, Sanjay K. Mishra +4
We report detailed temperature-dependent inelastic neutron scattering and ab-initio lattice dynamics investigation of magnetic perovskites YCrO3 and LaCrO3. The magnetic neutron sc…