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| Reference : The nonlinear optical, magnetic, and Mossbauer spectral properties of some iron(III) dop... |
| Scientific journals : Article | |||
| Physical, chemical, mathematical & earth Sciences : Physics Physical, chemical, mathematical & earth Sciences : Chemistry 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  [Université de Liège - ULg > HEC-Ecole de gestion de l'ULg : UER > UER Opérations >] | |
| Renotte, Yvon [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 [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Chimie physique appliquée > >] | |
| Pirard, Jean-Paul [Université de Liège - ULg > Département de chimie appliquée > Génie chimique - Chimie physique appliquée > >] | |
| Delwiche, Jacques [Université de Liège - ULg > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences) >] | |
| Hubin-Franskin, Marie-Jeanne [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 |
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