Kumar, B.Dhanasekhar, C.Anandhan, S.Kalpathy, S.K.2026-02-052021New Journal of Chemistry, 2021, 45, 37, pp. 17438-1744611440546https://doi.org/10.1039/d1nj01714dhttps://idr.nitk.ac.in/handle/123456789/23029Polymorph (spinel/ilmenite) composite nanofibers of nickel titanate (NTO) were prepared by a sol-gel assisted electrospinning process followed by pyrolysis using the styrene-acrylonitrile copolymer as a precursor at three different pyrolysis soaking temperatures (i.e. T= 773, 973, and 1173 K). The magnetic behavior of these composite NTO nanofibers was studied under isothermal and non-isothermal conditions in the temperature range of 20-300 K. The magnetic parameters such as coercivity (H<inf>c</inf>), remanence (M<inf>r</inf>), and saturation magnetisation (M<inf>s</inf>) were found to be strongly dependent onT. The highestH<inf>c</inf>andM<inf>r</inf>were observed for NTO nanofibers developed at 973 K, which have a mosaic structured morphology with spinel and ilmenite NTO crystallite sizes of ~39 nm and ~24 nm, respectively. On the other hand, the highestM<inf>s</inf>and switching field distribution were observed for mosaic structured NTO nanofibers having smaller crystallites (~13 nm and 24 nm for spinel and ilmenite NTO, respectively, with high inter-particle distance and high porosity) developed at 773 K, which are also rich in spinel NTO content. The correlation between the variation in magnetic behavior and structural/morphological features of NTO nanofibers is useful for NTO-based soft magnetic and multiferroic applications. © The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2021.IsothermsNanofibersNickel compoundsPyrolysisSol-gel processSol-gelsComposite nanofibersElectrospinning processMagnetic behaviorMagnetic parametersNickel titanatesNon-isothermal conditionSoaking temperatureStyrene-acrylonitrile copolymersTemperature rangeTitanate nanofiberStyreneacrylonitrilecopolymernanofibernickelstyreneArticlecontrolled studyelectrospinningmagnetismmorphologymosaicismnonhumanpyrolysistemperature