Ajay Kumar

activity

20232026

collaborators

3 papers

cond-mat.str-el2026

Raman spectroscopic signature of Kitaev magnetism and complex spin-lattice coupling in S = 1/2 antiferromagnet SrLaCoNbO $_{6}$ double perovskite

Ajay Kumar, Clemens Ulrich, Rajendra S. Dhaka

We report a detailed analysis of temperature-dependent Raman spectroscopy and Co $K$ -edge extended x-ray absorption fine structure (EXAFS) for a pseudospin- $S ~ = 1/2$ insulati…

cond-mat.str-el2024

Antiferromagnetic ordering and glassy nature in NASICON type NaFe $_{2}$ PO $_{4}$ (SO $_{4}$ ) $_{2}$

Manish Kr. Singh, A. K. Bera, Ajay Kumar +2

We investigate crystal structure and magnetic properties including spin relaxation and magnetocaloric effect in NASICON type NaFe $_{2}$ PO $_{4}$ (SO $_{4}$ ) $_{2}$ sample. The Rietveld refinem…

cond-mat.str-el2023

Correlation between the exchange bias effect and antisite disorders in Sr $_{2 - x}$ La $_{x}$ CoNbO $_{6}$

Ajay Kumar, B. Schwarz, R. S. Dhaka

We unravel the effect of La substitution and hence antisite disorders on the exchange bias (EB) mechanism in Sr $_{2 - x}$ La $_{x}$ CoNbO $_{6}$ ( $x =$ 0, 0.2) double perovskite samples using…

Raman spectroscopic signature of Kitaev magnetism and complex spin-lattice coupling in S = 1/2 antiferromagnet SrLaCoNbO6​ double perovskite

Antiferromagnetic ordering and glassy nature in NASICON type NaFe2​PO4​(SO4​)2​

Correlation between the exchange bias effect and antisite disorders in Sr2−x​Lax​CoNbO6​

Raman spectroscopic signature of Kitaev magnetism and complex spin-lattice coupling in S = 1/2 antiferromagnet SrLaCoNbO $_{6}$ double perovskite

Antiferromagnetic ordering and glassy nature in NASICON type NaFe $_{2}$ PO $_{4}$ (SO $_{4}$ ) $_{2}$

Correlation between the exchange bias effect and antisite disorders in Sr $_{2 - x}$ La $_{x}$ CoNbO $_{6}$