Crystalline Order Effects on the Magnetic Properties of Superlattices made of Cobalt Nanocrystals

Isabelle Lisiecki (1) , Sawako Nakamae (2)

1 MONARIS - De la Molécule aux Nanos-objets : Réactivité, Interactions et Spectroscopies
2 SPHYNX - Systèmes Physiques Hors-équilibre, hYdrodynamique, éNergie et compleXes

We present the magnetic property evolution in long-range ordered fcc supracrystals of Co nanocrystals (NCs) induced mainly by nanocrystallinity. By increasing the nanocrystalline order of individual NCs, ac susceptibility measurements indicate a significant increase in the 'interaction-to-anisotropy' energy ratio, a trend favourable for the formation of SFM state in these 3D supracrystals.

Domains: Physics [physics]

Isabelle Lisiecki, Sawako Nakamae. Crystalline Order Effects on the Magnetic Properties of Superlattices made of Cobalt Nanocrystals. Journal of Physics: Conference Series, 2014, 521, ⟨10.1088/1742-6596/521/1/012007⟩. ⟨cea-01384234⟩