Publications (44)
Evidence for anomalous structural behavior in CaFe2As2
S. K. Mishra, R. Mittal, P. S. R. Krishna +5
Behavior of Lithium Oxide at Superionic Transition: First Principles and Molecular Dynamics Studies
M. K. Gupta, Prabhatasree Goel, R. Mittal +2
Synchrotron X-ray Diffraction Study of BaFe2As2 and CaFe2As2 at High Pressures up to 56 GPa: Ambient and Low-Temperatures Down to 33 K
R. Mittal, S. K. Mishra, S. L. Chaplot +9
Inelastic neutron scattering and lattice dynamical calculations in BaFe2As2
R. Mittal, Y. Su, S. Rols +6
Phase stability and structural temperature dependence in sodium niobate: A high resolution powder neutron diffraction study
S. K. Mishra, R. Mittal, V. Yu. Pomjakushin +1
Spin-Lattice Coupling in K0.8Fe1.6Se2 and KFe2Se2: Inelastic Neutron Scattering and ab-initio Phonon Calculations
R. Mittal, M. K. Gupta, S. L. Chaplot +6
Vibrational and thermodynamic properties of high-pressure phases in LiYF_4
A. Sen, S. L. Chaplot, R. Mittal
Phonon dynamics in SrFe2As2 and SrFeAsF parent pnictide compounds: How different/similar when compared to Ca- and Ba-compounds?
R. Mittal M. Zbiri, S. Rols, Y. Su +9
Neutron Diffraction Reveals the Existence of Confined Water in Triangular and Hexagonal Channels of Modified YPO4 at Elevated Temperatures
S. K. Mishra, R. S. Ningthoujam, R. Mittal +8
Spin-Phonon Coupling, High Pressure Phase Transitions and Thermal Expansion of Multiferroic GaFeO3: A Combined First Principles and Inelastic Neutron Scattering Study
M. K. Gupta, R. Mittal, M. Zbiri +4
Lattice vibrations in high-pressure phases of LiYF$_{4}$
A. Sen, S. L. Chaplot, R. Mittal
Phonons and Anomalous Thermal Expansion Behaviour in Crystalline Solids
R. Mittal, M. K. Gupta, S. L. Chaplot
High-Temperature Phonon Spectra of Multiferroic BiFeO3 from Inelastic Neutron Spectroscopy
M. Zbiri, H. Schober, N. Choudhury +5
Origin of Large Dielectric Constant with Large Remnant Polarization and Evidence of Magnetoelectric Coupling in Multiferroic La modified BiFeO3-PbTiO3 Solid Solution
Anupinder Singh, Ratnamala Chatterjee, S. K. Mishra +2
Fast ion diffusion, superionic conductivity and phase transitions of the nuclear materials UO2 and Li2O
Prabhatasree Goel, N. Choudhury, S. L. Chaplot
Phonon Softening and Pressure-Induced Phase Transitions in Quartz Structured Compound, FePO4
R. Mittal, R. P. Hermann, M. Angst +5
Phonons and Thermodynamics of LiMPO4 (M=Mn, Fe)
Prabhatasree Goel, M. K. Gupta, R. Mittal +5
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
Pressure dependence of the low- temperature crystal structure and phase transition behaviour of CaFeAsF and SrFeAsF: A synchrotron x-ray diffraction study
S. K. Mishra, R. Mittal, S. L. Chaplot +8
Ab initio studies of phonon softening and high pressure phase transitions of alpha-quartz SiO2
N. Choudhury, S. L. Chaplot
Lattice Dynamics and Thermal Expansion Behavior in Metal Cyanides, MCN (M=Cu, Ag, Au): Neutron Inelastic Scattering and First Principles Calculations
M. K. Gupta, Baltej Singh, R. Mittal +2
Effects of magnetic doping and temperature dependence on phonon dynamics in CaFe\_{1-x}Co\_{x}AsF compounds (x = 0, 0.06, 0.12)
R. Mittal, M. Zbiri, S. Rols +9
Phonons, Phase Transitions and Thermal Expansion in LiAlO2: An ab-initio Density Functional Study
Baltej Singh, M. K. Gupta, R. Mittal +1
Investigation of phonon dynamics of perovskite multiferroic manganites: RMnO3 (R=Tb, Dy, Ho)
Renu Choithrani, Mala N. Rao, S. L. Chaplot +2
Phonons, Nature of Bonding and Their Relation to Anomalous Thermal Expansion Behavior of M2O (M=Au, Ag, Cu)
M. K. Gupta, R. Mittal, S. L. Chaplot +1
Investigating Anomalous Thermal Expansion of Copper Halides by Inelastic Neutron Scattering and Ab-inito Phonon Calculations
Abhijith M. Gopakumar, M. K. Gupta, R. Mittal +2
Phonon spectra in CaFe2As2 and Ca0.6Na0.4Fe2As2: Measurement of the pressure and temperature dependence and comparison with ab-initio and shell model calculations
R. Mittal, S. Rols, M. Zbiri +10
Lattice Dynamics and High Pressure Phase Stability of Zircon Structured Natural Silicates
Preyoshi P. Bose, R. Mittal, S. L. Chaplot
Phonon dynamics in Sr0.6K0.4Fe2As2 and Ca0.6Na0.4Fe2As2
R. Mittal, Y. Su, S. Rols +6
Anomalous Phonons in CaFe2As2
R. Mittal, L. Pintschovius, D. Lamago +9
Spin-Phonon Coupling and High Pressure Phase Transitions of RMnO3 (R= Ca and Pr): An Inelastic Neutron Scattering and First Principle Studies
S. K. Mishra, M. K. Gupta, R. Mittal +2
Lattice dynamical calculations of infinite layer iron oxides SrFeO2 and CaFeO2
R. Mittal, S. L. Chaplot, Y. Su
Collective dynamics in crystalline polymorphs of ZnCl$_{2}$: potential modelling and inelastic neutron scattering study
A. Sen, Mala N. Rao, R Mittal +1
Evidence for existence of Functional Monoclinic Phase in Sodium Niobate based Solid Solution by Powder Neutron Diffraction
S. K. Mishra, Mrinal Jauhari, R. Mittal +3
Phonons and Stability of Infinite-Layer Iron Oxides SrFeO2 and CaFeO2
M. K. Gupta, R. Mittal, S. L. Chaplot +2
Inelastic Neutron Scattering Studies of Phonon Spectra and Simulations in Tungstates, AWO4 (A = Ba, Sr, Ca and Pb)
Prabhatasree Goel, M. K. Gupta, R. Mittal +4
Negative Thermal Expansion in cubic ZrW2O8: Role of Phonons in Entire Brillouin Zone From ab-inito Calculations
M. K. Gupta, R. Mittal, S. L. Chaplot
Pressure dependence of phonon modes across the tetragonal to collapsed tetragonal phase transition in CaFe2As2
R. Mittal, R. Heid, A. Bosak +14
Competing antiferroelectric and ferroelectric interactions in NaNbO3 : Neutron diffraction and theoretical studies
S. K. Mishra, N. Choudhury, S. L. Chaplot +2
High Temperature Phase Stability in Li0.12Na0.88NbO3: A Combined powder X-Ray and Neutron Diffraction Study
S. K. Mishra, P. S. R. Krishna, A. B. Shinde +4
Suppression of Antiferroelectric State in NaNbO3 at High Pressure from In Situ Neutron Diffraction
S. K. Mishra, M. K. Gupta, R. Mittal +2
Phonons and Colossal Thermal Expansion Behavior of Ag3Co(CN)6 and Ag3Fe(CN)6
R Mittal, M. Zbiri, H. Schober +3
Phonon Dynamics and Inelastic Neutron Scattering of Sodium Niobate
S. K. Mishra, M. K. Gupta, R. Mittal +4
Dynamic Disorder in Negative Thermal Expansion Compound Zn(CN)2
R. Mittal, S. Mitra, H. Schober +2