Surface spin-glass-like behavior of monodispersed superparamagnetic Mn0.5Zn0.5Fe2O4 magnetic fluid

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dc.contributor.author Parekh, Kinnari
dc.contributor.author Almásy, László
dc.contributor.author Lee, Hyo Sook
dc.contributor.author Upadhyay, Ramesh V.
dc.date.accessioned 2014-03-16T13:32:36Z
dc.date.available 2014-03-16T13:32:36Z
dc.date.issued 2012-01
dc.identifier.citation Parekh, Kinnari et al., “Surface spin-glass-like behavior of monodispersed superparamagnetic Mn0.5Zn0.5Fe2O4 magnetic fluid”, Applied Physics A, DOI: 10.1007/s00339-011-6564-0, vol. 106, no. 1, pp. 223–228, Jan. 2012. en_US
dc.identifier.issn 0947-8396
dc.identifier.issn 1432-0630
dc.identifier.uri http://dx.doi.org/10.1007/s00339-011-6564-0
dc.identifier.uri https://repository.iitgn.ac.in/handle/123456789/797
dc.description.abstract Zero field cooled dc-magnetization measurements of monodispersed Mn0.5Zn0.5Fe2O4 nanoparticles dispersed in kerosene exhibit two transitions at low temperatures. These transitions correspond to (i) the superparamagnetic to blocked superparamagnetic and (ii) the blocked superparamagnetic to surface spin-glass like/quantum superparamagnetic state upon lowering the temperature. The existence of a disorder surface is confirmed by recording small-angle neutron scattering data below and above the Curie temperature. Magnetic relaxation analysis shows a plateau at low temperature (below 5 K) with a slight minimum at 3 K, which is a characteristic of the surface spin-glass-like state. This is analyzed considering the energy distribution n(E)∼1/E. The existence of surface disorder dominates at low temperature and mimics the transition from superparamagnetic to quantum superparamagnetic states. en_US
dc.description.statementofresponsibility by Kinnari Parekh et al.,
dc.format.extent vol. 106, no. 1, pp. 223–228
dc.language.iso en en_US
dc.publisher Springer Link en_US
dc.subject DC magnetization en_US
dc.subject Energy distributions en_US
dc.subject Low temperatures en_US
dc.subject Mono dispersed en_US
dc.subject Small angle neutron scattering en_US
dc.subject Spin glass like state en_US
dc.subject Superparamagnetic state en_US
dc.subject Superparamagnetics en_US
dc.subject Surface disorder en_US
dc.subject Zero field cooled en_US
dc.title Surface spin-glass-like behavior of monodispersed superparamagnetic Mn0.5Zn0.5Fe2O4 magnetic fluid en_US
dc.type Article en_US
dc.relation.journal Applied Physics A


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