R. Dhaka

activity

20202024

most citedEvidence of discrete energy states and cluster-glass behavior in Sr

_{2 - x}

_{x}

CoNbO

_{6}

34 citations · 69 across the 9 of their papers we have counts for

collaborators

9 papers

cond-mat.str-el2024★ 1 cited

Observation of an unconventional giant negative exchange bias effect in La $_{0.5}$ Sr $_{0.5}$ Co $_{0.85}$ Nb $_{0.15}$ O $_{3}$

Rishabh Shukla, B. Schwarz, R. S. Dhaka

We find an unconventional giant negative exchange bias (EB) of $H_{EB}$ = --14.1~kOe at 2~K (cooling field of 50~kOe) in the cluster spin-glass (CSG) La $_{0.5}$ Sr $_{0.5}$ Co$_{0…

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…

cond-mat.str-el2023

Unveiling the magnetic structure and phase transition of Cr $_{2}$ CoAl using neutron diffraction

Guru Dutt Gupt, Yousef Kareri, James Hester +2

We report the detailed analysis of temperature dependent neutron diffraction pattern of the Cr $_{2}$ CoAl inverse Heusler alloy and unveil the magnetic structure up to the phase trans…

cond-mat.str-el2023★ 11 cited

Evolution of complex magnetic phases and metal-insulator transition through Nb substitution in La $_{0.5}$ Sr $_{0.5}$ Co $_{1 - x}$ Nb $_{x}$ O $_{3}$

Rishabh Shukla, R. S. Dhaka

We report the evolution of structural, magnetic, transport, and electronic properties of bulk polycrystalline La $_{0.5}$ Sr $_{0.5}$ Co $_{1 - x}$ Nb $_{x}$ O $_{3}$ ( $x =$ 0.025--0.25) samples.…

cond-mat.str-el2022

Observation of anisotropic thermal expansion and Jahn-Teller effect in double perovskites Sr $_{2 - x}$ La $_{x}$ CoNbO $_{6}$ using neutron diffraction

Ajay Kumar, Anil Jain, S. M. Yusuf +1

We use temperature dependent neutron powder diffraction (NPD) to investigate the structural changes and magnetic interactions in double perovskite Sr $_{2 - x}$ La $_{x}$ CoNbO $_{6}$ ( $x =$ 0…

cond-mat.str-el2020★ 34 cited

Evidence of discrete energy states and cluster-glass behavior in Sr $_{2 - x}$ La $_{x}$ CoNbO $_{6}$

Ajay Kumar, B. Schwarz, H. Ehrenberg +1

We report the detailed analysis of specific heat [C $_{P}$ (T)] and ac-susceptibility for magnetically frustrated Sr $_{2 - x}$ La $_{x}$ CoNbO $_{6}$ ( $x =$ 0--1) double perovskites to unde…

cond-mat.mtrl-sci2020★ 17 cited

Structural, transport, optical and electronic properties of Sr $_{2}$ CoNbO $_{6}$ thin films

Ajay Kumar, Rishabh Shukla, Akhilesh Pandey +5

We study the effect of substrate induced strain on the structural, transport, optical and electronic properties of Sr $_{2}$ CoNbO $_{6}$ double perovskite thin films. The reciprocal spac…

cond-mat.mtrl-sci2020★ 6 cited

Structural and transport properties of La $_{1 - x}$ Sr $_{x}$ Co $_{1 - y}$ Nb $_{y}$ O $_{3}$ thin films

Rishabh Shukla, Ajay Kumar, Sandeep Dalal +2

We present the structural and transport properties of La $_{1 - x}$ Sr $_{x}$ Co $_{1 - y}$ Nb $_{y}$ O $_{3}$ ( $y =$ 0.1 and $x =$ 0; $y =$ 0.15 and $x =$ 0.3) thin films grown on (001) orientated singl…

Observation of an unconventional giant negative exchange bias effect in La0.5​Sr0.5​Co0.85​Nb0.15​O3​

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​

Unveiling the magnetic structure and phase transition of Cr2​CoAl using neutron diffraction

Evolution of complex magnetic phases and metal-insulator transition through Nb substitution in La0.5​Sr0.5​Co1−x​Nbx​O3​

Observation of anisotropic thermal expansion and Jahn-Teller effect in double perovskites Sr2−x​Lax​CoNbO6​ using neutron diffraction

Evidence of discrete energy states and cluster-glass behavior in Sr2−x​Lax​CoNbO6​

Structural, transport, optical and electronic properties of Sr2​CoNbO6​ thin films

Structural and transport properties of La1−x​Srx​Co1−y​Nby​O3​ thin films