TY - JOUR
T1 - A fluorescent magnetic nanoalloy-Lanthanon-doped FePt:RE
AU - Wen, Ming
AU - Zhao, Wengang
AU - Zhang, Tao
AU - Zhu, Yuan Zheng
AU - Wang, Ya Fen
AU - Wu, Qingsheng
PY - 2008/6/1
Y1 - 2008/6/1
N2 - Employing dibenzo-24-crown-8-ether (DB24C8) as a phase-transfer catalyst, monodispersed fluorescent lanthanon-doped magnetic FePt:RE (RE = Eu, Dy, and Ce) nanoparticles about 3 nm in size were synthesized through the reduction of H2PtCl6ṡ6H2O, Fe2(C2O4)3ṡ5H 2O, and RE(NO3)3 (RE = Eu, Dy, and Ce) by propylene glycol using oleic acid as the stabilizer in the solvent-thermal system. The conversion of the as-synthesized chemically disordered fcc FePt:RE nanoparticles to a chemically ordered L10 structure occurred after annealing treatment at 873 K, and was simultaneously accompanied by a coercivity increase. It is interesting that the amorphous formation trend is strengthened in an europium-doped FePt:Eu alloy accompanied by enhancement of the coercive force. Its thermal stability indicated that the addition of europium can inhibit the phase transformation. Moreover, the optical measurement results proved that FePt:Dy alloy nanoparticles have fluorescent properties.
AB - Employing dibenzo-24-crown-8-ether (DB24C8) as a phase-transfer catalyst, monodispersed fluorescent lanthanon-doped magnetic FePt:RE (RE = Eu, Dy, and Ce) nanoparticles about 3 nm in size were synthesized through the reduction of H2PtCl6ṡ6H2O, Fe2(C2O4)3ṡ5H 2O, and RE(NO3)3 (RE = Eu, Dy, and Ce) by propylene glycol using oleic acid as the stabilizer in the solvent-thermal system. The conversion of the as-synthesized chemically disordered fcc FePt:RE nanoparticles to a chemically ordered L10 structure occurred after annealing treatment at 873 K, and was simultaneously accompanied by a coercivity increase. It is interesting that the amorphous formation trend is strengthened in an europium-doped FePt:Eu alloy accompanied by enhancement of the coercive force. Its thermal stability indicated that the addition of europium can inhibit the phase transformation. Moreover, the optical measurement results proved that FePt:Dy alloy nanoparticles have fluorescent properties.
KW - FePt:RE nanoparticles
KW - Fluorescence
KW - Magnetic
KW - Monodispersed
KW - Phase-transfer catalysis
UR - https://www.scopus.com/pages/publications/43249094900
U2 - 10.1016/j.jcis.2008.02.003
DO - 10.1016/j.jcis.2008.02.003
M3 - 文章
AN - SCOPUS:43249094900
SN - 0021-9797
VL - 322
SP - 143
EP - 151
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
IS - 1
ER -