Please use this identifier to cite or link to this item: http://hdl.handle.net/2080/3162
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dc.contributor.authorKarmakar, Subrata-
dc.contributor.authorBehera, Dhrubananda-
dc.date.accessioned2019-01-04T11:52:33Z-
dc.date.available2019-01-04T11:52:33Z-
dc.date.issued2018-
dc.identifier.citationInternational Conference on Magnetic Materials and Applications (ICMAGMA - 2018), NISER, Bhubaneswar, India, 9-13 December 2018.en_US
dc.identifier.urihttp://hdl.handle.net/2080/3162-
dc.descriptionCopyright of this document belongs to proceedings publisher.en_US
dc.description.abstractThe nickel ferrite micro and nano-particles have been prepared via solid state and sol-gel auto-combustion technique and its single phase formation, cubic spinal crystal structure (space group Fd-3m) and surface morphology was confirmed by XRD, FESEM and TEM techniques respectively. The optical band gap was estimated from reflectance spectra using Kubelka-Munk equation and the direct optical band gap enhances in nanoparticles (1.905 eV) than microparticles (1.805 eV) due to quantum confinement effect. The small value of remanence magnetization (Mr) and coercive field (Hc) of nanoparticles was observed from narrwow hysteresis M-H loop which reccomends its superparamagnetic states near room teperature (296K). The absence of blocking temperature for micro-particles from 0-300 K confirms the non-existance of single-domain region and superparamagnetic states.en_US
dc.subjectNFO micro and nanoparticlesen_US
dc.subjectPorosityen_US
dc.subjectOptical band gapen_US
dc.subjectM-H and M-T measurementen_US
dc.titleMagnetic and optical studies of NiFe2O4 micro and nanoparticlesen_US
dc.typeArticleen_US
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