Sophie Carenco | Publications

Publications

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2011 | Articles and Reviews

Magnetic Core−Shell Nanoparticles from Nanoscale-Induced Phase Segregation

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.

ChemMater2011

S. Carenco, X. F. Le Goff, J. Shi, L. Roiban, O. Ersen, C. Boissière, C. Sanchez, N. Mézailles, Chem. Mater. 2011, 23, 2270.

 

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