87 citations · 218 across the 6 of their papers we have counts for
6 papers
Crossover From Individual to Collective Magnetism in Dense Nanoparticle Systems: Local Anisotropy Versus Dipolar Interactions
Elena H. Sánchez, Marianna Vasilakaki, Su Seong Lee +11
Dense systems of magnetic nanoparticles may exhibit dipolar collective behavior. However, two fundamental questions remain unsolved: i) whether the transition temperature may be af…
Tailoring defects and nanocrystal transformation for optimal heating power in bimagnetic particles
George Antonaropoulos, Marianna Vasilakaki, Kalliopi N. Trohidou +5
The effects of cobalt incorporation in spherical heterostructured iron oxide nanocrystals (NCs) of sub-critical size have been explored by colloidal chemistry methods. Synchrotron…
Vacancy-driven non-cubic local structure and magnetic anisotropy tailoring in FeO-FeO nanocrystals
Alexandros Lappas, George Antonaropoulos, Konstantinos Brintakis +8
In contrast to bulk materials, nanoscale crystal growth is critically influenced by size- and shape-dependent properties. However, it is challenging to decipher how stoichiometry,…
Simultaneous individual and dipolar collective properties in binary assemblies of magnetic nanoparticles
Elena H. Sánchez, Marianna Vasilakaki, Su Seong Lee +12
Applications based on aggregates of magnetic nanoparticles are becoming increasingly widespread, ranging from hyperthermia to magnetic recording. However, although some uses requir…
Assembly-mediated Interplay of Dipolar Interactions and Surface Spin Disorder in Colloidal Maghemite Nanoclusters
A. Kostopoulou, K. Brintakis, M. Vasilakaki +5
Controlled assembly of single-crystal, colloidal maghemite nanoparticles is facilitated via a high-temperature polyol-based pathway. Structural characterization shows that size-tun…
Magnetic properties of dense nanoparticle arrays with core/shell morphology
D. Kechrakos, K. N. Trohidou, M. Vasilakaki
We calculate the magnetization hysteresis for an ordered array of composite magnetic nanoparticles with a ferromagnetic (FM) core and an antiferromagnetic (AFM) shell, located on a…