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Synthesis and characterization of ferromagnetic cobalt nanospheres, nanodiscs and nanocubes
D. Srikala, V. N. Singh, A. Banerjee +2
We report the synthesis of cobalt nanoparticles with different shapes and sizes by rapid pyrolysis of cobalt carbonyl in the presence of various surfactants. The size and shape of…
Effect of epitaxial strain on the magneto-electric coupling of YMnO3 thin films
A. K. Singh, M. Snure, A. Tiwari +1
We report synthesis of phase pure multiferroic YMnO3 thin films on sapphire (0001)with conducting ZnGaO buffer contact layer. Films were prepared by using pulsed laser deposition t…
Field dependent competing magnetic ordering in multiferroic Ni3V2O8
A. K. Singh, D. Jain, V. Ganesan +2
The geometrically frustrated magnet Ni3V2O8 undergoes a series of competing magnetic ordering at low temperatures. Most importantly, one of the incommensurate phases has been repor…
Strong electron-electron correlation and weak localization in CeO_{0.9}F_{0.1}Fe_{1-x}Co_xAs
S. J. Singh, J. Prakash, S. Patnaik +1
Electron-doping of the semimetal (CeOFeAs) by either fluorine (max Tc ~ 43 K)or cobalt (max Tc ~ 11 K) leads to superconductivity. Here we show the effect of transition metal (Co)…
Possible magnetoelectric coupling in the half doped charge ordered manganite, Pr_0.5Ca_0.5MnO_3-d
A. Karmakar, S. Majumdar, A. K. Singh +2
Magnetization, magnetoresistance, and magnetodielectric measurements have been carried out on the half doped charge ordered manganite, Pr_0.5Ca_0.5MnO_3. The low temperature state…
Upper critical field, superconducting energy gaps, and Seebeck coefficient in La0.8Th0.2OFeAs
J. Prakash, S. J. Singh, S. Patnaik +1
We report the synthesis and characterization of a new electron-doped La-oxypnictide superconductor by partial substitution of lanthanum by thorium. The superconducting transition t…