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Chains of Superparamagnetic Nanoparticles
Author(s) -
Nakata Kazuya,
Hu Ying,
Uzun Oktay,
Bakr Osman,
Stellacci Francesco
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200800022
Subject(s) - superparamagnetism , nanoparticle , materials science , ferromagnetism , nanotechnology , magnetic nanoparticles , chemical engineering , magnetization , condensed matter physics , magnetic field , physics , quantum mechanics , engineering
Molecularly linked γ ‐Fe 2 O 3 nanoparticles chains are produced from superparamagnetic γ ‐Fe 2 O 3 nanoparticles under zero applied magnetic field. The chains exhibit ferromagnetic interaction between γ ‐Fe 2 O 3 nanoparticles that compose them as evidenced by an increase in blocking temperature from ∼80 K in the case of isolated nanoparticles to ∼120 K for chains.