SEE Co provides hardware, software and services for Mossbauer Spectoscopy plus Ritverc Gamma and X-ray Sources. Synchrotron Radiation Sources with Mössbauer Beamlines Brazilian groups ( and FUMG) · Laboratorio de Espectroscopia Mössbauer, Lima, Peru (in Spanish) . Espectroscopia Mössbauer: condições experimentais de aquisição e estocagem multicanal para a análise numérica de dados com adequação de resolução.

Author: Togul Mule
Country: Bulgaria
Language: English (Spanish)
Genre: Personal Growth
Published (Last): 12 November 2004
Pages: 69
PDF File Size: 15.59 Mb
ePub File Size: 2.47 Mb
ISBN: 157-6-92788-120-2
Downloads: 91725
Price: Free* [*Free Regsitration Required]
Uploader: Tosho

In this case, the use of channels data was suitable to identify a structure, not observed when less channels were used.

Chan, Solid State Commun. Desta forma, uma longa lista de sistemas tem sido processada via moagem em altas energias [1]. Four different samples were used in these tests, whose data were acquired using, and channels.

Efeito Mössbauer

All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License. O refinamento estrutural Rietveld permitiu-nos identificar as fases presentes em cada amostra espectrozcopia. Rodriguez-Carvajal, Physica B How to cite this article.

De fato, os materiais ativados via moagem em altas energias tornam-se, na maioria das vezes, mais reativos do que aqueles ativados termoquimicamente [3].

SEE Co Mossbauer Spectometers, Ritverc Gamma Sources, Janis Cryostats

Resumo The objective of this work is to examine the use of Mossbauer spectroscopy in two aspects: Some features of this site may not work without it. JavaScript is disabled for your browser. Moreto I ; R. Szmoski I ; L. Specifically, the hematite a -Fe 2 O 3 -alumina a -Al 2 O 3 system has been studied, mainly due to its potential applications in metallurgy and as catalyst of ammonia synthesis. ABSTRACT Multiferroics are materials in which two or all three of the properties, ferroelectricity, especyroscopia, and ferroelasticity occur in the same phase.


Efeito Mössbauer – Wikipédia, a enciclopédia livre

Ramesh, Science Although the spectra resolution was better, in this case, we showed that the results quality are similar, independently of the channels number. Metadata Mostrar registro completo.

Autor Shigeyosi, Willian Takemitsu. The determination and identification of crystallographic phases, lattice parameters and unit cell volume in as-milled and annealed samples allowed verifying structural parameters change, the spinel phase formation and possible relative deformations due to the high-energy ball milling process.

Vale do Rio Doce.

Os raios g foram fornecidos por uma fonte de 57 Co Rh com atividade nominal de 10 mCi. Paesano Jr II ; I. The third one was pellet of iron ore, produced by Cia. The study and comparison of the three PC fitting programs showed that the WinNormos for Igor, is the most appropriate because its use is very simple, and permits much more flexibility on the fittings, making possible distribution on the different sensible parameters on the function used in the fitting.


The spectra were fitted using the site plus field distribution modelconducting to better identification of the phases and their percent in the samples. Multiferroics are materials in which two or all three of the properties, ferroelectricity, ferromagnetism, and ferroelasticity occur in the same phase.

However, the time acquisition increases, proportionally to the increase of channels number.

File:Mossbauer 51Fe.png

A The first and second samples analyzed, were two clay from Sta. However, compounds of this system also may present magnetoelectric effects. B Concerning to acquisition, we showed that the adaptation of the Ortec MCS system acquisition, mossbxuer use not just channels but as welland channels can improve the spectra quality. It was propitiate as well by the fitting through the WinNormos for Igor. At last, we re-analyzed some spectra, acquired using channels, from a previous study of our research group, on the AISI L stainless steel, applying the WinNormos for Igor.

Eiras, Ferroelectrics