Visualization and quantification of four steps in magnetic field induced two-dimensional ordering of superparamagnetic submicron particles

Gnana Prakash Gajula, Teresa Neves Petersen, Steffen B. Petersen

Publikation: Bidrag til tidsskriftLetterForskningpeer review

16 Citationer (Scopus)


We hereby report a methodology that permits a quantitative investigation of the temporal self-organization of superparamagnetic nanoparticles in the presence of an external magnetic field. The kinetics of field-induced self-organization into linear chains, time-dependent chain-size distribution, resolved growth steps (condensation, polarization, co-linearity and concatenation), the average chain growth rate, and inter-particle interaction length were calculated in the presence of a 120 G external magnetic field using optical microscopy and ‘in-house' developed image analysis software. The measurements are in good agreement with theoretical assumptions.
TidsskriftApplied Physics Letters
Udgave nummer10
Antal sider3
StatusUdgivet - 2010

Bibliografisk note

Artikel nr. 103103