Controlled 3D-coating of the pores of highly ordered mesoporous antiferromagnetic Co<inf>3</inf>O<inf>4</inf> replicas with ferrimagnetic Fe<inf>x</inf>Co<inf>3-x</inf>O<inf>4</inf> nanolayers

Eva Pellicer, Moisés Cabo, Alberto López-Ortega, Marta Estrader, Lluís Yedra, Sònia Estradé, Francesca Peiró, Zineb Saghi, Paul Midgley, Emma Rossinyol, Igor V. Golosovsky, Alvaro Mayoral, Joan D. Prades, Santiago Suriñach, Maria Dolors Baró, Jordi Sort, Josep Nogués

Research output: Contribution to journalArticleResearchpeer-review

14 Citations (Scopus)

Abstract

The controlled filling of the pores of highly ordered mesoporous antiferromagnetic Co3O4 replicas with ferrimagnetic FexCo3-xO4 nanolayers is presented as a proof-of-concept toward the integration of nanosized units in highly ordered, heterostructured 3D architectures. Antiferromagnetic (AFM) Co3O 4 mesostructures are obtained as negative replicas of KIT-6 silica templates, which are subsequently coated with ferrimagnetic (FiM) Fe xCo3-xO4 nanolayers. The tuneable magnetic properties, with a large exchange bias and coercivity, arising from the FiM/AFM interface coupling, confirm the microstructure of this novel two-phase core-shell mesoporous material. The present work demonstrates that ordered functional mesoporous 3D-materials can be successfully infiltrated with other compounds exhibiting additional functionalities yielding highly tuneable, versatile, non-siliceous based nanocomposites. © 2013 The Royal Society of Chemistry.
Original languageEnglish
Pages (from-to)5561-5567
JournalNanoscale
Volume5
DOIs
Publication statusPublished - 21 Jun 2013

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