DIA, Nada; LISNARD, Laurent; PRADO, Yoann; GLOTER, Alexandre; STÉPHAN, Odile; BRISSET, François; HAFEZ, Hala; SAAD, Zeinab; MATHONIÈRE, Corine; CATALA, Laure; MALLAH, Talal

doi:10.1021/ic400303x

Métadonnées

Licence d’utilisation du document

DIA, Nada
Ecole Doctorale des Sciences et de Technologie
Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]

LISNARD, Laurent
Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]
Institut Parisien de Chimie Moléculaire [IPCM]

PRADO, Yoann
Institut de Chimie Moléculaire et des Matériaux d'Orsay [ICMMO]

Langue

Article de revue

Ce document a été publié dans

Inorganic Chemistry. 2013-09-16, vol. 52, n° 18, p. 10264-10274

American Chemical Society

Résumé en anglais

Based on nickel hexacyanidochromate and cobalt hexacyanidoferrate Prussian blue analogues, two series of photomagnetic/ferromagnetic sub-50 nm core multishell coordination nanoparticles have been synthesized in a surfactant-free one-pot multistep procedure with good control over the dispersity (10% standard deviation) and good agreement with the targeted size at each step. The composition and the valence state of each shell have been probed by different techniques that have revealed the predominance of Co(II)-NC-Fe(III) pairs in a series synthesized without alkali while Co(III)-NC-Fe(II) photoswitchable pairs have been successfully obtained in the photoactive coordination nanoparticles by control of Cs(+) insertion. When compared, the photoinduced behavior of the latter compound is in good agreement with that of the model one. Exchange coupling favors a uniform reversal of the magnetization of the heterostructured nanoparticles, with a large magnetization brought by a soft ferromagnetic shell and a large coercivity due to a harder photomagnetic shell. Moreover, a persistent increase of the photoinduced magnetization is observed for the first time up to the ordering temperature (60 K) of the ferromagnetic component because of a unique synergy.< Réduire

Mots clés en italien

Cre-multishell nanoparticles

Cobalt

Nickel

Ferromagnetism

Photomagnetism

Métadonnées

Licence d’utilisation du document

Synergy in photomagnetic/ferromagnetic sub-50 nm core-multishell nanoparticles

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en italien

DOI

Origine

Unités de recherche