2026-04-17T05:20:16Zhttps://recercat.cat/oai/requestoai:recercat.cat:2445/1549012025-12-04T21:32:54Zcom_2072_1057col_2072_478812col_2072_478917col_2072_478933
RECERCAT
author
López-Ortega, Alberto
author
Estrader i Bofarull, Marta
author
Salazar-Alvarez, German
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Estradé Albiol, Sònia
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Golosovsky, Igor V.
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Dumas, R.K.
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Keavney, D.J.
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Vasilakaki, Marianna
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Trohidou, Kalliopi N.
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Sort, Jordi
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Peiró Martínez, Francisca
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Suriñach, Santiago (Suriñach Cornet)
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Baró, M. D.
author
Nogués, Josep
2020-04-03T07:51:32Z2020-04-03T07:51:32Z2012-06-182020-04-03T07:51:33Z
Inverted soft/hard, in contrast to conventional hard/soft, bi-magnetic core/shell nanoparticles of Mn xFe 3-xO 4/Fe xMn 3-xO 4 with two different core sizes (7.5 and 11.5 nm) and fixed shell thickness (∼0.6 nm) have been synthesized. The structural characterization suggests that the particles have an interface with a graded composition. The magnetic characterization confirms the inverted soft/hard structure and evidences a strong exchange coupling between the core and the shell. Moreover, larger soft core sizes exhibit smaller coercivities and loop shifts, but larger blocking temperatures, as expected from spring-magnet or graded anisotropy structures. The results indicate that, similar to thin film systems, the magnetic properties of soft/hard core/shell nanoparticles can be fine tuned to match specific applications
(c) López-Ortega, Alberto et al., 2012 info:eu-repo/semantics/openAccess
Ferrita
Manganès
Nanopartícules
Propietats magnètiques
Ferrite
Manganese
Nanoparticles
Magnetic properties
Strongly exchange coupled inverse ferrimagnetic soft/hard, Mn(x)Fe(3-x)O(4)/Fe(x)Mn(3-x)O(4), core/shell heterostructured nanoparticles
info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion