Open AccessMagnetic field-induced off-resonance third-order optical nonlinearity of iron oxide nanoparticles incorporated mesoporous silica thin films during heat treatment
Author(s) -
Fangming Cui,
Chude Feng,
RongJun Xie,
Zile Hua,
Hideyuki Ohtsuka,
Yoshio Sakka,
Jianlin Shi
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.002010
Subject(s) - materials science , nanoparticle , mesoporous silica , thin film , magnetic field , iron oxide , wavelength , mesoporous material , iron oxide nanoparticles , nonlinear optics , optics , magnetic nanoparticles , nuclear magnetic resonance , nanotechnology , analytical chemistry (journal) , optoelectronics , laser , chemistry , catalysis , biochemistry , physics , chromatography , quantum mechanics , metallurgy
Highly dispersed and uniform Fe(2)O(3) nanoparticles (NPs) have been incorporated into the pore channels of SBA-15 mesoporous silica thin films (MSTFs). And such Fe(2)O(3) NPs incorporated MSTFs did not show detectable nonlinear optical (NLO) signals at off-resonance wavelength 1064 nm by Z-scan technique. However after a vacuum heat treatment at 800 degrees C for 1 h under 6 T magnetic field, the Fe(2)O(3) NPs incorporated MSTFs with very low Fe content (0.8 approximately 1.5 at.%) presented distinctive NLO signals with chi(3) value in an order of 10(-10) esu. We proposed the physical reason for the NLO property generation to be the magnetic domain orientation of the iron oxide NPs incorporated within the pore channels of the MSTFs by the magnetic field heat treatment.