Reference : The nonlinear optical, magnetic, and Mossbauer spectral properties of some iron(III) dop...
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Chemistry
Physical, chemical, mathematical & earth Sciences : Physics
Engineering, computing & technology : Materials science & engineering
http://hdl.handle.net/2268/20006
The nonlinear optical, magnetic, and Mossbauer spectral properties of some iron(III) doped silica xerogels
English
Rebbouh, L. [> > > >]
Rosso, Vanessa mailto [Université de Liège - ULg > HEC-Ecole de gestion de l'ULg : UER > UER Opérations >]
Renotte, Yvon mailto [Université de Liège - ULg > Département de physique > Département de physique >]
Lion, Y. [> > > >]
Grandjean, François-Xavier [Centre Hospitalier Universitaire de Liège - CHU > > Imagerie médicale >]
Heinrichs, Benoît mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Chimie physique appliquée > >]
Pirard, Jean-Paul mailto [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Chimie physique appliquée > >]
Delwiche, Jacques mailto [Université de Liège - ULg > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences) >]
Hubin-Franskin, Marie-Jeanne mailto [Université de Liège - ULg > Département de chimie (sciences) > GIGA-R : Laboratoire de spectrométrie de masse (L.S.M.) >]
Long, G. J. [> > > >]
2006
Journal of Materials Science
Springer Science & Business Media B.V.
41
10
2839-2849
Yes (verified by ORBi)
International
0022-2461
Dordrecht
The Netherlands
[en] SOL-GEL ; CATALYSTS ; NANOPARTICLES ; PARTICLES ; AEROGELS ; SYSTEMS
[en] Iron(III) species dispersed in silica have been synthesized with a sol-gel process. The iron(III) was introduced as the acetylacetonate complex into a solution of tetraethoxysilane to yield, after evaporative drying, pellets or monoliths. Two gels were dried very slowly over a period of five months in order to prepare a defect free monolith useful for nonlinear optical studies. Z-scan experimental studies on the resulting, transparent, monolithic, doped solid revealed an optical Kerr effect, a third order nonlinear optical phenomenon showing a linear dependence of the refractive index on the irradiance with a nonlinear refractive index, n(2), of -1.95 x 10(-11) cm(2)/W. Magnetic susceptibility studies between 4.2 and 295 K revealed paramagnetic behavior with a Curie constant of 4.433 (emu/mol)K and a Weiss temperature of -7.1 K. Magnetization studies at 5 K and at applied fields of up to 4 T and Mossbauer spectral studies between 4.2 and 295 K revealed a 50:50 mixture of paramagnetic species and nanoparticles with an average particle radius of 1.3 +/- 0.2 nm. A blocking temperature of 70 K and a magnetic anisotropy energy of 2.4 x 10(5) J/m(3) stop are derived from the Mossbauer spectra. (c) 2006 Springer Science + Business Media, Inc.
http://hdl.handle.net/2268/20006
10.1007/s10853-006-6336-3

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
Heinrichs 06-JoMSpdf.pdfPublisher postprint1.09 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.