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Observation of Cluster Glass and Griffiths‐like Phase in Fe3O4 Nanostructures

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dc.contributor.author Revathy, R
dc.contributor.author Varma, M R
dc.contributor.author Surendran, K P
dc.date.accessioned 2021-11-18T16:04:09Z
dc.date.available 2021-11-18T16:04:09Z
dc.date.issued 2021-02
dc.identifier.citation physica status solidi (b); 258(2): 2000341 en_US
dc.identifier.uri https://onlinelibrary.wiley.com/doi/full/10.1002/pssb.202000341
dc.identifier.uri http://hdl.handle.net/123456789/3912
dc.description.abstract In the present investigation, the rare occurrence of Griffiths-like phase (GP) in Fe3O4 (magnetite) nanostructures is observed for the first time. Initially, Fe3O4 monodispersed nanoparticles and an intercalated ensemble of nanoparticles and nanorods are successfully synthesized by a facile one-step synthesis. The magnetization, as a function of the applied field, confirms the absence of superparamagnetism in both samples. The thermomagnetic data at cryogenic temperatures show glassy nature, and the alternating current (AC) susceptibility measurements confirm the existence of cluster glass. The low-field direct current (DC) magnetization measurements of Fe3O4 nanostructures show an anomalous magnetic behavior, which indicates the presence of GP above its Curie temperature. This unusual behavior is attributed to the presence of short-range magnetic correlations and ferromagnetic clusters present in the system due to the size reduction. en_US
dc.language.iso en en_US
dc.publisher Wiley en_US
dc.subject griffiths-like phase en_US
dc.subject short-range magnetic correlation en_US
dc.subject ferromagnetic clusters en_US
dc.title Observation of Cluster Glass and Griffiths‐like Phase in Fe3O4 Nanostructures en_US
dc.type Article en_US

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    Research articles authored by NIIST researchers published in 2021

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