697 citations · 968 across the 16 of their papers we have counts for
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Compositionally Engineered Non-Equimolar LaCoO-Based High-Entropy Perovskites with Enhanced Thermoelectric Performance
Jitendra Kumar, David Bérardan, Diana Dragoe +2
The decoupling of phonon and electron transport remains a central challenge in the development of high-performance TE materials. Configurational-entropy maximization is widely invo…
Configurational Entropy-Driven Phase Stability and Thermal Transport in Rock-Salt High-Entropy Oxides
Ashutosh Kumar, Adrien Moll, Jitendra Kumar +3
High-entropy oxides (HEOs) offer a unique platform for exploring the thermodynamic interaction between configurational entropy and enthalpy in stabilizing complex solid solutions.…
Thermoelectric properties of high-entropy wolframite oxide: (CoCuNiFeZn)GaWO
Ashutosh Kumar, Adrien Moll, Mouhamad Navid Mouhamadsiradjoudine +3
In this report, the synthesis of high-entropy wolframite oxide (CoCuNiFeZn)GaWO through standard solid-state route followed by spark plasma sintering (SPS) and thei…
Novel entropy-stabilized fluorite oxides with multifunctional properties
Ashutosh Kumar, David Bérardan, Francois Brisset +2
Development of new high-entropy oxides having configurational entropy dominating the phase stability has become a hot topic since the discovery of rock salt structure entropy-stabi…
Effect of crystal field engineering and Fermi level optimization on thermoelectric properties of GeTe: Experimental investigation and theoretical insight
Ashutosh Kumar, Preeti Bhumla, D. Sivaprahasam +2
This study shows a method of enhancing the thermoelectric properties of GeTe-based materials by Ti and Bi co-doping on cation sites along with self-doping with Ge via simultaneous…
Thermoelectric properties of high-entropy rare-earth cobaltates
Ashutosh Kumar, Diana Dragoe, David Bérardan +1
High-entropy concept introduced with a promising paradigm to obtain exotic physical properties has motivated us to explore the thermoelectric properties of Sr-substituted high-entr…
Colossal dielectric constant in high entropy oxides
David Berardan, Sylvain Franger, Diana Dragoe +2
Entropic contributions to the stability of solids are very well understood and the mixing entropy has been used for forming various solids, for instance such as inverse spinels. A…
First 17O NMR study of a 17O enriched LaMnO3 stoichiometric crystal
L. Pinsard Loreynne-Gaudart, A. Trokiner, S. Verkhovskii +2
We present the synthesis and the NMR characterization of a 17O enriched LaMnO3 crystalline sample. We checked that it is single phase and, more important, stochiometric in oxygen.…
Strong 3p -T1u Hybridization in Ar@C60
M. Morscher, A. Seitsonen, S. Ito +3
Multilayers of fullerenes with and without endohedral Ar units, C60 and Ar@C60, were investigated by photoemission and density functional theory. The stoichiometry and the endohedr…
In Search of Microscopic Evidence for Molecular Level Negative Thermal Expansion in Fullerenes
S. Brown, J. Cao, J. L. Musfeldt +5
We report the high-resolution far infrared vibrational properties of C60 and endohedral Kr@C60 fullerene as a function of temperature. Anomalous softening of the F1u(1) mode (526 c…
Electronic self-doping of Mo-states in A2FeMoO6 (A=Ca, Sr and Ba) half-metallic ferromagnets - a Nuclear Magnetic Resonance study
M. Wojcik, E. Jedryka, S. Nadolski +6
A systematic study of (A,A')2FeMoO6 (A,A'=Ca, Sr, Ba) ferromagnetic oxides with double perovskite structure has been performed using 95,97Mo and 57Fe NMR spectroscopy. These oxides…