Zobrazeno 1 - 10
of 1 021
pro vyhledávání: '"Dhaka R"'
We find an unconventional giant negative exchange bias (EB) of $H_{\rm EB}$ = --14.1~kOe at 2~K (cooling field of 50~kOe) in the cluster spin-glass (CSG) La$_{0.5}$Sr$_{0.5}$Co$_{0.85}$Nb$_{0.15}$O$_3$ perovsikte cobaltites. The magnetic memory effec
Externí odkaz:
http://arxiv.org/abs/2405.05053
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 refinement of x-ray and neutron diffraction patterns show a rhombohedral crys
Externí odkaz:
http://arxiv.org/abs/2403.08679
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 the detailed analysis of the field cooled magnetization isotherms (M-
Externí odkaz:
http://arxiv.org/abs/2310.04031
We investigate the magnetic behavior and critical exponents of quaternary CoFeV$_{0.8}$Mn$_{0.2}$Si Heusler alloy to understand the interactions across the Curie temperature ($T_{\rm C}$). The Rietveld refinement of the x-ray diffraction pattern with
Externí odkaz:
http://arxiv.org/abs/2310.01790
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 transition as well as its fully compensated ferrimagnetic nature. The Rietv
Externí odkaz:
http://arxiv.org/abs/2303.11869
Autor:
Shukla, Rishabh, Dhaka, R. S.
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. The Rietveld refinement of the x-ray diffraction patterns with R$\bar
Externí odkaz:
http://arxiv.org/abs/2303.01108
Publikováno v:
Physical Review B, 106, 125148 (2022)
We investigate the electronic and magnetic properties as well as lattice dynamics and spin-phonon coupling of $\beta$-Na$_{0.33}$V$_2$O$_5$ using temperature-dependent Raman scattering, dc-magnetization and dc-resistivity, x-ray photoemission, and ab
Externí odkaz:
http://arxiv.org/abs/2205.06019
Publikováno v:
Physical Review B, 105, 245155 (2022)
We report the electronic and local structural investigation of double pervoskites Sr$_{2-x}$La$_x$CoNbO$_6$ ($x=$ 0--1) using x-ray absorption near edge structure (XANES) and extended x-ray absorption fine structures (EXAFS) at the Nb, Co, and Sr $K$
Externí odkaz:
http://arxiv.org/abs/2203.12939
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$_6$ ($x=$ 0.4 and 0.6). A structural phase transition from tetragonal ($I4/m$) to
Externí odkaz:
http://arxiv.org/abs/2202.10409
Autor:
Pati, Jayashree, Raj, Hari, Sapra, Simranjot K., Dhaka, Anita, Bera, A. K., Yusuf, S. M., Dhaka, R. S.
In search of the potential cathode materials for sodium-ion batteries and to understand the diffusion kinetics, we report the detailed analysis of electrochemical investigation of honeycomb structured Na$_{2}$Ni$_{2}$TeO$_{6}$ material using cyclic v
Externí odkaz:
http://arxiv.org/abs/2112.00536