Browsing School of Chemical Sciences by Author "Verenkar, V.M.S."

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Anisotropy and domain state dependent enhancement of single domain ferrimagnetism in Cobalt substituted Ni-Zn ferrites

Gawas, S.G.; Meena, S.S.; Yusuf, S.M.; Verenkar, V.M.S. (New Journal of Chemistry. 40(11); 2016; 9275-9284.)

Nanocrystalline Co substituted Ni-Zn ferrites with the general formula Co sub(x)Ni sub(0.6-x)Zn sub(0.4)Fe sub(2)O sub(4) (x = 0.0 to 0.6) were prepared by a precursor combustion method. Average crystallite size, as estimated ...
Beneficiation of Goan Ore Rejects to Get Pure Iron Oxide and Utilisation of the Iron Oxide to Synthesize Ferrites, High-Tech Magnetic Materials

Verenkar, V.M.S.
CCDC 2014378: Experimental Crystal Structure Determination

Narvekar, K.U.; Gauns-Dessai, P.P.; Verenkar, V.M.S.; Srinivasan, B.R. (Cambridge Crystallographic Data Centre (CCDC); 2020.)
Combustion triggered route for synthesizing nanostructured Nickel substituted Cobalt Ferrites: Investigations on their structural, morphological, electrical, dielectric and magnetic properties

Sawal, M.U.; Verenkar, V.M.S. (Proc. of DAE-BRNS 8th Interdisciplinary Symposium on Materials Chemistry (ISMC- 2020), 17-19 Jun 2021. 2021; 99pp.)
Comments on the paper "Influence of ethylenediaminetetraacetic acid on the performance of ferrous sulphate heptahydrate nonlinear optical single crystal"

Srinivasan, B.R.; Verenkar, V.M.S. (Materials Letters. 309; 2022; ArticleID_131455.)

The authors of the title paper (Mater. Lett. 161 (2015) 224-226) claimed to have grown ethylenediaminetetraacetic acid doped ferrous sulfate heptahydrate (FeEDTA) crystal by slow evaporation method. In this letter, many ...
Dielectric and magnetic studies of nano-sized CoNiZn ferrite prepared from combustion synthesis

Asogekar, P.A.; Verenkar, V.M.S. (6. Interdisciplinary Symp. on Materials Chemistry (ISMC-2016), 6-10 Dec 2016, BARC, Mumbai, India. 2016; 574-575.)

Synthesis of CoNiZn ferrite by combustion method was carried out using Maleic acid as a novel fuel. Thermal decomposition temperature for combustion synthesis was fixed using TG-DTA studies. Characterization of synthesized ...
Dielectric behaviour of MgFe2O4 prepared from chemically beneficiated iron ore rejects

Rane, K.S.; Verenkar, V.M.S.; Sawant, P.Y. (Bulletin of Materials Science. 24(3); 2001; 323-330.)

Chemically beneficiated high silica/alumina iron ore rejects (27-76 percent Fe2O3) were used to synthesize iron oxides of purity 96-98 percent with SiO2/Al2O3 ratio reduced to 0(.)03. The major impurities on chemical ...
Effects of sintering temperature on microstructure, initial permeability and electric behaviour of Ni-Mn-Zn ferrites

Gawas, U.B.; Verenkar, V.M.S.; Vader, V.T.; Jain, A.; Meena, S.S. (Materials Chemistry and Physics. 275; 2022; ArticleID_125250.)

The effects of sintering temperature on microstructure, initial permeability, and electrical behaviour of Ni sub(0.5-x) Mn sub(x) Zn sub(0.5) Fe sub(2) O sub(4) (0.0 less than x less than 0.5) prepared using the precursor ...
Ferrite grade iron oxides from ore rejects

Rane, K.S.; Verenkar, V.M.S.; Sawant, P.Y. (Bulletin of Materials Science. 24(3); 2001; 331-338.)

Iron oxyhydroxides and hydroxides were synthesized from chemically beneficiated high SiO2/Al2O3 low-grade iron ore (57(.)49 percent Fe2O3) rejects and heated to get iron oxides of 96-99(.)73 percent purity. The infrared ...
Hydrazine method of synthesis of gamma-Fe2O3 useful in ferrites preparation. Part III - Study of hydrogen iron oxide phase in gamma-Fe2O3

Rane, K.S.; Verenkar, V.M.S.; Pednekar, R.M.; Sawant, P.Y. (Journal of Materials Science-Materials in Electronics. 10(2); 1999; 121-132.)

Direct current electrical conductivity (sigma) measurements as a function of temperature have been carried out on gamma-Fe2O3 prepared from precursors, iron (II) carboxylatohydrazinates, gamma-FeOOH and hydrazinated ...
Hydrazine method of synthesis of gamma-Fe2O3 useful in ferrites preparation. Part IV - preparation and characterization of magnesium ferrite, MgFe2O4 from gamma-Fe2O3 obtained from hydrazinated iron oxyhydroxides and iron (II) carboxylatohydrazinates

Rane, K.S.; Verenkar, V.M.S.; Sawant, P.Y. (Journal of Materials Science-Materials in Electronics. 10(2); 1999; 133-140.)

Electro-magnetic properties and microstructural characterization of MgFe2O4 synthesized by a ceramic technique at similar to 1000 degrees C from iron oxides, consisting of mainly gamma-Fe2O3 and traces of alpha-Fe2O3, ...
Influence of addition of Al sub(3+) on the structural and solid state properties of nanosized Ni-Zn ferrites synthesized using malic acid as a novel fuel

Gauns-Dessai, P.P.; Meena, S.S.; Verenkar, V.M.S. (Journal of Alloys and Compounds. 842; 2020; ArticleID_155855.)

In this work, the synthesis of Ni sub(0.7) Zn sub(0.3) Fe sub(2-x) Al sub(x) O sub(4) (x=0.0-0.6) nanoferrites by combustion method using malic acid as a novel fuel is being reported for the first time. The structural ...
Influence of Co over magnetically benign Zn ferrite system and study of its structural, dielectric, superparamagnetic and antibacterial efficacy

Asogekar, P.A.; Gaonkar, S.K.; ArunKumar; Verenkar, V.M.S. (Materials Research Bulletin. 141; 2021; ArticleID_111330.)

A series of nano-sized Co-Zn ferrite, Co sub(x)Zn sub(1-x)Fe sub(2)O sub(4) (x = 0.0, 0.1, 0.2, 0.3, 0.4, 0.5) was synthesized by precursor combustion method. The phase purity, composition, surface area, and oxidation ...
Influence of Mn substitution on Mössbauer and magnetic properties of Ni-Zn Ferrite nanoparticles

Gawas, U.B.; Verenkar, V.M.S.; Meena, S.S.; Bhatt, P. (Journal of Superconductivity and Novel Magnetism. 30(11); 2017; 3241-3246.)

Series of Mn-substituted Ni-Zn ferrite compositions were synthesized and characterized using XRD, IR, TEM, and Mössbauer studies. The lattice parameter was found to increase with an increase in Mn substitution. The FTIR ...
Influence of zinc doping on structural, electrical, magnetic and electrochemical properties of nickel ferrite system synthesized from succinato-hydrazinate precursors

Costa, S.O.; Verenkar, V.M.S. (Journal of Materials Science: Materials in Electronics. 33(34); 2022; 25717-25742.)

Pure Ni-Zn ferrites were prepared by the precursor-combustion method using Ni sub(1-x)Zn sub(x)Fe sub(2)(C sub(4)H sub(4)O sub(4)) sub(3).6N sub(2)H sub(4) (x=0.1, 0.3, 0.5, 0.7, 0.9) precursors. The fascinating property ...
Initial susceptibility studies on Cu-Mg-Zn ferrites

Bhosale, D.N.; Verenkar, V.M.S.; Rane, K.S.; Bakare, P.P.; Sawant, S.R. (Materials Chemistry and Physics. 59(1); 1999; 57-62.)

Cu(0.5-x)MxZn0.5Fe2O4 ferrites were synthesised by thermal decomposition of oxalate complexes by co-precipitation technique using oxalate precursors. X-ray diffraction studies revealed a single spinel phase with un-detectable ...
An insight into the nanosize and bulk Ni sub(0.5)Co sub(0.5)Fe sub(2)O sub(4) ferrites through their comparative study: Structural and magnetic investigations

Sawal, M.U.; Verenkar, V.M.S. (Journal of Materials Science: Materials in Electronics. 32(16); 2021; 21350-21367.)

The proposed research work manifests the comparison of nanosized 'as prepared' Ni sub(0.5)Co sub(0.5)Fe sub(2)O sub(4) ferrite with their 'sintered' counterpart concerning their effect on the structural and magnetic ...
An introduction to thermodynamic modeling, thermal analysis and calorimetry

Mojumdar, S.C.; Prasad, R.; Sun, L.; Venart, J.E.S.; Eichhorn, S.H.; Iqbal, M.; Elkamel, A.; Madhurambal, G.; Meenakshisundaram, S.; Varshney, K.G.; Verenkar, V.M.S.; Jona, E.; Janotka, I.; Ray, A.; Chowdhury, B. (Research Journal of Chemistry and Environment. 13(4); 2009; 86-103.)

Thermodynamic modelling is a powerful tool for predicting and understanding the behaviour of various systems. There are many thermoanalytical techniques such as thermogravimetric analysis (TGA), high resolution thermogravimetric ...
Isolation of Marine Natural Products and Synthesis of Bioactive Molecules Using Chiron Approach

Rodrigues, Lima
Magnetic and Dielectric properties of nanocrystalline nickel cobalt ferrite synthesized by precursor combustion technique

Coutinho, D.M.; Verenkar, V.M.S. (5. Interdisciplinary Symposium on Materials Chemistry (ISMC-2014) DAE-BRNS, BARC, Mumbai 9-13 Dec 2014. 2014; 367-368.)

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