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Browsing by Author "Srinivasu, VV"

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Electron spin resonance study of a-Cr2O3 and Cr2O3·nH2O quasi-spherical nanoparticles

Author: Khamlich, S ; Srinivasu, VV ; Nemraoui, O ; McCrindle, R ; Cingo, N ; Maaza, M Date: Dec 2011 The quasi-spherical nanoparticles of hydrated Cr2O3 · nH2O, and crystalline -Cr2O3, have been synthesized by reduction of the first row (3d) transition metal complex of K2Cr2O7. The temperaturedependence of electron spin resonance (ESR) ... Read more
Emerging boom in nano magnetic particle incorporated high-Tc superconducting materials and technologies - A South African perspective

Author: Srinivasu, VV Date: Jan 2009 With a strategy to establish and embrace the emerging nano particle incorporated superconductivity technology (based on the HTS materials and nano magnetic particles) in South Africa, the author has initiated the following research activity ... Read more
Enhanced room temperature multiferroicity in Gd doped BFO

Author: Pradhan, SK ; Das, J ; Samantray, S ; Sahu, DR ; Pradhan, AK ; Zhang, K ; Konda, RB ; Mundle, R ; Srinivasu, VV ; Roul, BK Date: Jan 2009 A signature of enhanced multiferroic behavior at room temperature has been observed in Gd doped Bismuth Ferrite system. This paper reports the preliminary findings/observations of structural and magnetization measurement of bismuth rich iron ... Read more
Investigation of the electrical charge transport mechanism and magnetoresistance response in chloridedoped polyaniline–Fe composite nanofibers

Author: Bhaumik, M ; Mahule, TS ; Srinivasu, VV ; Maity, Arjun Date: Jun 2019 One-dimensional composite nanostructures of chloride-doped polyaniline (PANI-Cl) and Fe nanoparticles (NPs) were fabricated via deposition of Fe NPs onto the PANI nanofiber matrix at room temperature. Morphological and structural characterization ... Read more
Low field microwave absorption in iron nanoparticles embedded polyaniline nanofibers composite

Author: Bhaumik, M ; Maity, Arjun ; Mahule, TS ; Srinivasu, VV Date: Mar 2019 Low field microwave absorption (LFMA) in conducting polymers is completely different as compared to magnetic systems and is very intriguing. To understand LFMA phenomenon in the conducting polymers, we studied LFMA in the conducting polyaniline ... Read more
Magnetic characterization of radio frequency heat affected micron size Fe3O4 powders: a bio-application perspective

Author: Roul, BK ; Mishra, DK ; Ray, M ; Sahu, DR ; Mishra, PK ; Srinivasu, VV ; Pradhan, AK Date: May 2009 Micron size Fe3O4 powders were chemically prepared and processed by radio frequency (13.56 MHz) oxygen plasma irradiation technique at different elevated temperatures using low radio frequency (RF) power level. Low magnetic field RF superconducting ... Read more
Observation of Shapiro-steps in AFM-plought micron-size YBCO planar construction

Author: Elkaseh, AAO ; Srinivasu, VV ; Perold, WJ Date: 2009 Using an Atomic Force Microscope (AFM), micron size planar constriction type junctions was successfully ploughed on YBa2Cu3O7-x thin films. The 100 nanometer (nm) thin films are deposited on MgO substrates by an Inverted Cylindrical Magnetron ... Read more
PBCO/YBCO bilayer growth and optimization for the fabrication of buffered step-edge Josephson junctions

Author: Van Staden, WF ; Buttner, U ; Fourie, CJ ; Srinivasu, VV ; Hardie, GL ; Perold, WJ Date: Apr 2009 Bilayers of PBCO and YBCO are grown epitaxially on MgO substrates using PLD. In this paper, researchers discuss the entire optimization process in detail, giving quantitative parameter values. Film characterization included XRD, AFM and ... Read more
Preparation of nanometer sized Mn doped Zn based oxides powder for DMS applications

Author: Das, J ; Pradhan, SK ; Samantray, S ; Sahu, DR ; Mishra, DK ; Srinivasu, VV ; Roul, BK Date: Jan 2009 In order to study the size dependent DMS (Diluted Magnetic Semiconductor) behavior of Mn doped ZnO, the authors have systematically prepared a series of nanosized green powder based on Mn doped ZnO (Zn 1-x Mn x O, where x=0.02 - 0.1) materials ... Read more
Removal of hexavalent chromium from aqueous solution using polypyrrole-polyaniline nanofibers

Author: Bhaumik, M ; Maity, Arjun ; Srinivasu, VV ; Onyango, MS Date: Feb 2012 Polypyrrole-polyaniline (PPy-PANI) nanofibers as adsorbent of Cr(VI) were prepared without template via coupling of propagating PPy+ and PANI+ free radicals by simultaneous polymerization of Py and ANI monomers in presence of FeCl3 oxidant. ... Read more
RF electrodynamics in small particles of oxides - a review

Author: Srinivasu, VV Date: Jan 2008 RF electrodynamics, particularly, the low field rf absorption in small superconducting and manganite particles is reviewed and compared with their respective bulk counterparts. Experimental and theoretical aspects of the small particle ... Read more
Thermal conductivity and stability of nano size carbon black filled PDMS: Fuel cell perspective

Author: Chen, H ; Botef, I ; Zheng, Haitao ; Maaza, M ; Vasudeva Rao, V ; Srinivasu, VV Date: 2011 Carbon black filled Polydimethylsiloxane (PDMS) was considered as a prospective bipolar plate material candidate for a Fuel Cell. In this perspective, thermal conductivity and stability of the composites were investigated. Samples with filler ... Read more

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Browsing by Author "Srinivasu, VV"

Browsing by Author "Srinivasu, VV"

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