54 citations · 80 across the 14 of their papers we have counts for
14 papers
Size-induced Exchange Bias in Single-phase CoO Nanoparticles
Vikash Sharma, Sudip Pal, Divya Sharma +3
We report exchange bias (EB) in single-phase CoO nanoparticles, where two magnetic phases naturally emerge as the crystallite size decreases from 34.6 to 10.8 nm. The Néel temperat…
Experimental observation of spin glass state in highly disordered quaternary Heusler alloy FeRuMnGa
Shuvankar Gupta, Sudip Chakraborty, Santanu Pakhira +8
The realization of spin-glass (S-G) state in Heusler alloys is very rare despite the presence of inherent structural and elemental disorder in those compounds. Although a few half…
Two-band conduction as a pathway to non-linear Hall effect and unsaturated negative magnetoresistance in the martensitic compound GdPd2Bi
Snehashish Chatterjee, Saurav Giri, Subham Majumdar +9
The present work aims to address the electronic and magnetic properties of the intermetallic compound GdPdBi through a comprehensive study of the structural, magnetic, electric…
Enhanced Thermoelectric Performance of Nanostructured Nickel Doped Ag2Te
Vikash Sharma, Divya Sharma, Ranu Bhatt +2
We report on the thermoelectric properties of nickel doped Ag2-xNixTe (x = 0, 0.015, 0.025 & 0.055, 0.115, 0.155) nanostructures in the temperature (T) range of 5 K to 575 K. The e…
Metal to Insulator Transition, Colossal Seebeck Coefficient and Large Violation of Wiedemann Franz law in Nanoscale Granular Nickel
Vikash Sharma, Gunadhor Singh Okram, Yung-Kang Kuo
We report on the electrical and thermal transport properties of nickel nanoparticles with crystallite size from 23.1 to 1.3 nm. These nanoparticles show a systematic metal to insul…
Ultralow Thermal Conductivity and Large Figure of Merit in Low-Cost and Nontoxic Core-Shell Cu@Cu2O Nanocomposites
Vikash Sharma, Gunadhor Singh Okram, Divya Verma +2
Identification of novel materials with enhanced thermoelectric (TE) performance is critical for advancing TE research. In this direction, this is the first report on TE properties…
Metal to insulator transition, colossal Seebeck coefficient and ultralow thermal conductivity in solution-processed monodispersed nickel nanoparticles
Vikash Sharma, Gunadhor Singh Okram, Yung-Kang Kuo
We report here metal to insulator transition, colossal Seebeck coefficient and ultralow thermal conductivity (0.0057th of its bulk value, significantly smaller than many well-known…
Electrical transport and thermoelectric properties of silver nanoparticles
Vikash Sharma, Gunadhor Singh Okram
Debye temperature decrease, residual resistivity increase and electron-phonon coupling constant increase as crystallite size decreases have been found from electrical resistivity i…
Influence of surfactant, particle size and dispersion medium on surface plasmon resonance of silver nanoparticles
Vikash Sharma, Divya Verma, Gunadhor Singh Okram
Clear influence of particle size, surfactants and dispersion medium on surface plasmon resonance (SPR) features of Ag nanoparticles (NPs), synthesized in thermal decomposition meth…
Strategy for enhanced thermoelectric performance of Bi2S3 nanorods by Bi nanoinclusions
Tarachand, Gunadhor Singh Okram, Binoy Krishna De +5
This is the first report on the enhanced thermoelectric (TE) properties of novel Bi2S3-Bi nanocomposites synthesized using a one-step polyol method at different reaction temperatur…
Size-induced structural phase transition at ~6.0 nm from mixed fcc-hcp to purely fcc structure in monodispersed nickel nanoparticles
Tarachand, Vikash Sharma, Jaiveer Singh +5
We have investigated the core issue of atomic lattices in monodispersed Ni nanoparticles (NPs) of sizes 3.8 nm to 10.1 nm using detailed analysis of X-ray diffraction, synchrotron…
Quantum Size Effect Exponential Heat Capacity in 4 nm Natural Nickel Nanolattice
Tarachand Patel, Jaiveer Singh, Satya Sanmukharao Samatham +4
Quantum size effect-induced heat capacity of metal nanoparticles at low temperatures was predicted 79 years ago to be exponential. This, however, has not been reported until date.…
Influence of surfactants on the electrical resistivity and thermopower of Ni nanoparticles
Netram Kaurav, Gunadhor S. Okram, V. Ganesan
Compacted pellets of nanocrystalline nickel (NC-Ni) of average particle size ranging from 18 to 33 nm were prepared using a variety of surfactants. They were characterized well and…
Naturally self-assembled nickel nanolattice
Jaiveer Singh, Netram Kaurav, Niranjan Prasad Lalla +1
This is the first report on the critical nature of nanolattice formability of different particle size (~4-10nm) of monodispersed nickel nanoparticles. They exhibit strikingly hexag…