DataVXACS Applied Materials & InterfacesPaper
journal article·2017-01-11

Magnetic Gold Confined in Ordered Mesoporous Titania Thin Films: A Noble Approach for Magnetic Devices

Leticia P. Granja, Eduardo D. Martínez, Horacio Troiani, Clément Sanchez, Galo J. A. A. Soler Illia

ACS Applied Materials & Interfaces· Volume 9· Issue 1
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Source abstract

Abstract

In the past decade, the surprising magnetic behavior of gold nanoparticles has been reported. This unexpected property is mainly attributed both to size and surface effects. Mesoporous thin films are ideal matrices for metallic nanoparticles inclusion, because of their highly accessible and tailorable pore systems that lead to completely tunable chemical environments. Exploiting these features, we synthesized Au nanoparticles within mesoporous titania thin films (film thickness of ∼150 nm and pore diameter of ∼5 nm), and we studied their magnetic properties under confinement. Here, we present the results of the magnetization as a function of temperature and magnetic field for this system, which are consistent with the previously reported for free (unconfined) thiol-capped gold nanoparticles. The successful inclusion of stable magnetic Au nanoparticles within transparent mesoporous thin films opens the gates for the application of these nanocomposites in two-dimensional (2D) microdevices technology and magneto-optical devices.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Nanoporous metals and alloys · Gold and Silver Nanoparticles Synthesis and Applications · Characterization and Applications of Magnetic Nanoparticles

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Departamento de Física de la Materia Condensada, Gerencia de Investigación y Aplicaciones, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, CONICET, Av. Gral. Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina

Gerencia Química, Centro Atómico Constituyentes, Comisión Nacional de Energía Atómica, CONICET, Av. Gral. Paz 1499, B1650KNA, San Martín, Buenos Aires, Argentina

División Física de Metales, Gerencia Física, and Instituto Baseiro (UNCU), CONICET, Centro Atómico Bariloche, Comisión Nacional de Energía Atómica, Av. Bustillo 9500 (8400), S. C. de Bariloche, Río Negro, Argentina

UPMC Univ. Paris 06, CNRS, Collège de France, UMR 7574, Laboratoire Chimie de la Matière Condensée de Paris, Collège de France, 11 place Marcelin Berthelot, 75005, Paris, France

Instituto de Nanosistemas, Universidad Nacional de General San Martín, CONICET, Av. 25 de Mayo y Francia, 1650, San Martín, Buenos Aires, Argentina

Funding

Consejo Nacional de Investigaciones Científicas y Técnicas · Agencia Nacional de Promoción Científica y Tecnológica · Centre National de la Recherche Scientifique

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