34 citations · 187 across the 13 of their papers we have counts for
9 papers · 1 filter
Electrical and Thermal transport studies of Sr and Mn co-substituted NdCoO3
Ashutosh Kumar
Oxide thermoelectrics are exciting due to their chemical and thermal stability at high temperatures. However, the efficacy of these materials are limited by poor figure of merit (z…
Effective Thermal Conductivity of SrBiTiO-LaSrMnO Oxide composite: Role of Particle Size and Interface Thermal Resistance
Ashutosh Kumar, Artur Kosonowski, Piotr Wyzga1 +1
We present a novel approach to reduce the thermal conductivity () in thermoelectric composite materials using acoustic impedance mismatch and the Debye model. Also, the correlat…
Effect of interface resistance on thermoelectric properties in (1-x)LaSrCoMnO/(x)WC composite
Ashutosh Kumar, Krzysztof T. Wojciechowski
In this study, the synergistic effect of the particle size of the dispersed phase and the interface thermal resistance (R) between the phases on the phonon thermal conducti…
Thermal conductivity of PbTe-CoSb3 bulk polycrystalline composite: the role of microstructure and interface thermal resistance
Artur Kosonowski, Ashutosh Kumar, Taras Parashchuk +2
Systematic experimental and theoretical research on the role of microstructure and interface thermal resistance on the thermal conductivity of the PbTe-CoSb3 bulk polycrystalline c…
Improved Thermoelectric Properties in (1-x)LaCoO3/(x)La0.7Sr0.3CoO3 Composite
Ashutosh Kumar, D. Sivaprahasam, Ajay D. Thakur
A high Seebeck coefficient (S), large electrical conductivity (σ), and reduced thermal conductivity (κ) are required to achieve a high figure-of-merit (zT) in an ideal thermoelectr…
Colossal Seebeck coefficient in Aurivillius Phase-Perovskite Oxide Composite
Ashutosh Kumar, D. Sivaprahasam, Ajay D. Thakur
We propose an inexpensive scalable approach for achieving extremely high values of Seebeck coefficient () by exploiting the natural superlattice structure in Aurivillius phase o…
Thermoelectric Properties of (1-x)LaCoOLaSrMnO Composite
Ashutosh Kumar, Karuna Kumari, B. Jayachandran +2
We report the thermoelectric (TE) properties of (1-x)LaCoO3.xLa0.7Sr0.3MnO3 (0 < x < 0.10) composite in a temperature range 320-800 K. Addition of La0.7Sr0.3MnO3 to LaCoO3 in small…
Extreme Sensitivity of Magnetic Properties on the Synthesis Routes in LaSrMnO
Ashutosh Kumar, Himanshu Sharma, C. V. Tomy +1
LaSrMnO polycrystalline samples have been prepared using different synthesis routes. X-ray Diffraction (XRD) confirms that the samples are of single phase with…
Magnetism in LaSrMnCoO ()
Ashutosh Kumar, Himanshu Sharma, C. V. Tomy +1
We study the structural and magnetic properties of LaSrMnCoO (). Rietveld refinement of X-ray Diffraction (XRD) pattern suggests ph…