Unusual static and dynamic magnetic properties of Cd1−yMnyS nanocrystals

Authors :: N. Feltin
D. Ingert
Marie-Paule Pileni
Laurent Levy
E. Vincent
Service de physique de l'état condensé (SPEC - UMR3680)
Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
Source :: Journal of Applied Physics, Journal of Applied Physics, American Institute of Physics, 2000, 87, pp.1415-1423. ⟨10.1063/1.372028⟩, Journal of Applied Physics, 2000, 87, pp.1415-1423. ⟨10.1063/1.372028⟩
Publication Year :: 2000
Publisher :: AIP Publishing, 2000.
Abstract: URL: http://www-spht.cea.fr/articles/s00/001 Effets de taille dans les propriétés magnétiques statiques et dynamiques de nanoparticules de Cd$_{1-y}$Mn$_y$S; Magnetic properties of Cd$_{1-y}$Mn$_y$S nanocrystals have been studied. They vary with the particle size and markedly differ from those observed in the bulk phase, in particular their interactions drastically increase compared to those observed in the latter case. A Mn$^{2+}$-Mn$^{2+}$ interaction enhancement with decreasing size involves changes in the magnetic phase diagram. For 4nm nanocrystals, a spin glass phase can be assumed.

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