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http://hdl.handle.net/2445/154901
Title: | 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 |
Author: | López-Ortega, Alberto Estrader i Bofarull, Marta Salazar-Alvarez, German Estradé Albiol, Sònia Golosovsky, Igor V. Dumas, R.K. Keavney, D.J. Vasilakaki, Marianna Trohidou, Kalliopi N. Sort, Jordi Peiró Martínez, Francisca Suriñach, Santiago (Suriñach Cornet) Baró, M. D. Nogués, Josep |
Keywords: | Ferrita Manganès Nanopartícules Propietats magnètiques Ferrite Manganese Nanoparticles Magnetic properties |
Issue Date: | 18-Jun-2012 |
Publisher: | Royal Society of Chemistry |
Abstract: | 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 |
Note: | Versió postprint del document publicat a: https://doi.org/10.1039/C2NR30986F |
It is part of: | Nanoscale, 2012, vol. 4, num. 16, p. 5138-5147 |
URI: | http://hdl.handle.net/2445/154901 |
Related resource: | https://doi.org/10.1039/C2NR30986F |
ISSN: | 2040-3364 |
Appears in Collections: | Articles publicats en revistes (Química Inorgànica i Orgànica) Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) Publicacions de projectes de recerca finançats per la UE |
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