LACAME 2008

Proceedings of the Eleventh Latin American Conference on the Applications of the Mössbauer Effect, La Plata, Argentina, 9-14 November 2008.

The broad scope of the Applications of the Mössbauer Effect to interdisciplinary subjects makes this volume an outstanding source of information to researchers and graduate students, who will find the unique results of Mössbauer spectroscopy a valuable aid and complement to their research in conjunction with other techniques. In this volume, applications to mineralogy, catalysis, soil science, amorphous materials, nanoparticles, magnetic materials, nanotechnology, metallurgy, corrosion, and magnetism, have been put together in original works produced by invited speakers and different research teams across the continent.

Contenu
Eleventh Latin American conference on the applications of the Mössbauer effect, LACAME 2008, La Plata, Argentina, 914 November 2008.- Preface.- Fe/MCM-41 sylilated catalyst: structural changes determination during the FischerTropsch reaction.- Reduction of hematite with ethanol to produce magnetic nanoparticles of Fe3O4, Fe1???x O or Fe0 coated with carbon.- Magnetic nanoparticles based on iron coated carbon produced from the reaction of Fe2O3 with CH4: a Mössbauer study.- Niobian iron oxides as heterogeneous Fenton catalysts for environmental remediation.- Magnetic minerals from volcanic Ultisols as heterogeneous Fenton catalysts.- Hematite reaction with tar to produce carbon/iron composites for the reduction of Cr(VI) contaminant.- Supported iron based redox systems for hydrogen production and storage from ethanol.- Mineralogical characterization of Greda clays and monitoring of their phase transformations on thermal treatment.- Mössbauer spectroscopy study of a mineral sample from Oshno Hill, District of Chavín de Pariarca, Huanuco Region, Peru.- Hematite from a mining area in the east border of Quadrilátero Ferrífero, Minas Gerais, Brazil.- Mössbauer studies of one representative hydromorphic soil of the coastal area of the Rio de La Plata.- 57Fe Mössbauer spectroscopy of radiation damaged samarskites and gadolinites.- Synthesis of hematite nanowires using a mesoporous hard template.- Mössbauer characterization of surface-coated magnetic nanoparticles for applications in transformers.- Formation of nanostructured Al 64 Cu 23 Fe 13 icosahedral quasicrystal by the ball milling technique.- Mössbauer and EXAFS spectroscopy investigation of iron and arsenic adsorption to lettuce leaves.- Characterization of corrosion products of a carbon steelscrew-nut set exposed to mountain weather conditions.- The role of the spinel phases on the rust activity in corroded steels.- On the reaction of iron oxides and oxyhydroxides with tannic and phosphoric acid and their mixtures.- Design of a conversion electron Mössbauer spectrometer based on an electron multiplier. Evaluation of the mean-escape-depth of the detected signals.- Magnetic properties of ?-Fe2O3 nanoparticles encapsulated in surface-treated polymer spheres.- Low temperature magnetic ordering in Fe-doped TiO 2 samples.- A quasi-continuous observation of the ?-transition of Fe1?+?x S by Mössbauer line tracking.- Mössbauer study of FeCo alloys with Cr additions synthesized by mechanical alloying.- Structure and soft magnetic properties of FINEMET type alloys: Fe73.5Si13.5Nb3???x Mo x B9Cu1 (x?=?1.5, 2).- Influence of silicon and atomic order on the magnetic properties of (Fe80Al20)100 x Si x nanostructured system.- Fe-doped SnO 2 nanopowders obtained by solgel and mechanochemical alloying with and without thermal treatment.- Crystallographic and 119Sn and 155Gd Mössbauer analyses of Gd5Ge2(Si1???xSnx)2 (x = 0.23 and x = 0.40).- A Mössbauer effect study of the Fe2+x Mn1x Al Heusler alloys.- Mössbauer analysis of Nd-Co M-type strontium hexaferrite powders with different iron content.- Quasicrystalline phase formation in the mechanically alloyed Al70Cu20Fe10.- Structural and magnetic properties of FeNi mecanosynthesized alloys.- Mössbauer study on Zn1???x Fe x O semiconductors prepared by high energy ball milling.- Hyperfine, structural and electrical transport properties of the high-energy milled (1 ? X).ZnOX.FeO system.- Effect of Ni on the lattice parameter and the magnetic hyperfine field in(Fe70Al30)100???x Ni x alloys.- Characterization of scraps produced by the industrial laser cutting of steels.- Mössbauer spectroscopy analysis on a tempered martensitic 9% Cr steel.- Synthesis and characterization of silica-coated nanoparticles of magnetite.- Synthesis and characterization of superparamagnetic iron oxide nanoparticles for biomedical applications.