Publications
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2011 | Articles and Reviews
Magnetic Core−Shell Nanoparticles from Nanoscale-Induced Phase Segregation
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Nanoscaling of the nickel phosphides profoundly alters their domains of stability. An original mechanism of “nanoscale-induced phase segregation” was uncovered in the present study: the appearance of two crystallized phases inside each single nanoparticle (here, Ni2P and Ni fcc), where the single-phase product (Ni3P) would have been preferred at the bulk scale. Phosphorus insertion inside the Ni fcc nanoparticles triggers the crystallization of a Ni2P core surrounded by a Ni shell. This core−shell Ni−P system was tuned by adjusting the amount of P4 added, providing tunable magnetic shells supported on monodisperse nanoparticles. |
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S. Carenco, X. F. Le Goff, J. Shi, L. Roiban, O. Ersen, C. Boissière, C. Sanchez, N. Mézailles, Chem. Mater. 2011, 23, 2270. |
