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Uniform Magnetic Chains of Hollow Cobalt Mesospheres from One‐Pot Synthesis and Their Assembly in Solution
Author(s) -
Guo L.,
Liang F.,
Wen X.,
Yang S.,
He L.,
Zheng W.,
Chen C.,
Zhong Q.
Publication year - 2007
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.200600415
Subject(s) - materials science , cobalt , coercivity , magnetization , magnetization reversal , saturation (graph theory) , chemical engineering , shell (structure) , nanotechnology , crystallography , condensed matter physics , composite material , magnetic anisotropy , metallurgy , magnetic field , chemistry , physics , mathematics , quantum mechanics , combinatorics , engineering
Magnetic chains up to 10 μm in length formed of hollow cobalt mesospheres (480–850 nm) with a 60 nm thick shell are synthesized by a new soft‐assembly protocol. The obtained chains show a saturation magnetization of 37.5 emu g –1 , a remnant magnetization of 1.55 emu g –1 , and a coercivity of ca. 66 Oe at 300 K. A possible mechanism for the formation of the chainlike hollow structures is proposed.