39 citations · 96 across the 4 of their papers we have counts for
5 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…
On the detection of surface spin freezing in iron oxide nanoparticles and its long-term evolution under ambient oxidation
M. Ghoshani, E. H. Sánchez, S. S. Lee +7
Exchange bias effects linked to surface spin freezing (SSF) are commonly found in iron oxide nanoparticles, while signatures of SSF in low-field temperature-dependent magnetization…
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…
High temperature magnetic stabilization of cobalt nanoparticles by an antiferromagnetic proximity effect
Jose A. De Toro, Daniel P. Marques, Pablo Muniz +4
Thermal activation tends to destroy the magnetic stability of small magnetic nanoparticles, with crucial implications in ultra-high density recording among other applications. Here…
Phase transition in a super superspin glass
R. Mathieu, J. A. De Toro, D. Salazar +3
We here confirm the occurrence of spin glass phase transition and extract estimates of associated critical exponents of a highly monodisperse and densely compacted system of bare m…