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Amorphous Silica Nanoparticles Embedded in Epitaxial SrTiO 3 and CoFe 2 O 4 Matrices
Author(s) -
Luo Hongmei,
Lin Yuan,
Wang Haiyan,
Baily Scott A.,
Lee Joon Hwan,
Hawley Marilyn E.,
McCleskey T. Mark,
Burrell Anthony K.,
Bauer Eve,
Civale Leonardo,
Jia Quanxi X.
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200801064
Subject(s) - materials science , epitaxy , coercivity , amorphous solid , nanoparticle , annealing (glass) , nanocomposite , amorphous silica , magnetic nanoparticles , chemical engineering , magnetic anisotropy , thin film , nanotechnology , magnetization , crystallography , composite material , condensed matter physics , chemistry , magnetic field , physics , layer (electronics) , quantum mechanics , engineering
Film formation : Polymer‐assisted deposition allows the growth of nanocomposite thin films comprising amorphous silica nanoparticles embedded in epitaxial SrTiO 3 and CoFe 2 O 4 matrices (see picture). These silica nanoparticles can be as small as 10 nm and become larger with increasing post annealing temperature. The incorporation of silica into epitaxial CoFe 2 O 4 films greatly enhances its coercivity and magnetic anisotropy.