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Direct Synthesis of Isolated L1 0 FePt Nanoparticles in a Robust TiO 2 Matrix via a Combined Sol–Gel/Pyrolysis Route
Author(s) -
Sort J.,
Suriñach S.,
Baró M. D.,
Muraviev D.,
Dzhardimalieva G. I.,
Golubeva N. D.,
Pomogailo S. I.,
Pomogailo A. D.,
Macedo W. A. A.,
Weller D.,
Skumryev V.,
Nogués J.
Publication year - 2006
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.200501265
Subject(s) - materials science , tetragonal crystal system , nanoparticle , rutile , metal , sol gel , pyrolysis , phase (matter) , chemical engineering , matrix (chemical analysis) , nanotechnology , decomposition , composite material , metallurgy , organic chemistry , engineering , chemistry
Tetragonal L1 0 FePt nanoparticles embedded in a robust TiO 2 (rutile) matrix (see Figure) are obtained using a modified sol–gel synthesis method followed by metal reduction in a self‐generated atmosphere during pyrolysis. The formation of metal nanoparticles is believed to proceed through the clustering of metal atoms inside the rigid and thermoresistant TiO 2 network, which both prevents their aggregation and permits them to convert into the desired L1 0 face‐centered tetragonal phase.