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Title: Local environment of iron in heavy ion-irradiated amorphous magnetic oxides by Moessbauer and x-ray absorption spectroscopy

Abstract

Moessbauer and X-ray absorption spectroscopies of some crystallized iron oxides, Fe{sub 2}O{sub 3}, FePO{sub 4}, Fe{sub 3}PO{sub 7}, and SrMn{sub 1.85}Fe{sub 0.15}O{sub 2.5}, the garnet Y{sub 3}Fe{sub 5}O{sub 12}, and the barium hexaferrite BaFe{sub 12}O{sub 19} have been undertaken in order to look at the local order around iron in Y{sub 3}Fe{sub 5}O{sub 12} and BaFe{sub 12}O{sub 19} materials amorphized by irradiation with high energy (27 MeV/n) xenon ions accelerated by GANIL. Simulations of the Moessbauer spectra suggested the presence of fivefold coordinated iron in the amorphous irradiated compounds with a distribution of magnetic interactions due to the variations of the number of iron second neighbors. The XANES spectra at the Fe-K edge confirmed the fivefold coordination of iron in the amorphous ferrites, show that the local structure around iron appears to be similar although the original structures were different, and appear close to the one observed in the Fe{sub 3}PO{sub 7} compound in which iron stands in a trigonal bipyramidal environment.

Authors:
;  [1];  [2]
  1. Crismat, Caen (France)
  2. Ciril,Caen (France); Lure, Orsay, (France)
Publication Date:
OSTI Identifier:
5742622
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry; (USA)
Additional Journal Information:
Journal Volume: 91:2; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BARIUM OXIDES; ION COLLISIONS; IRON OXIDES; STRONTIUM OXIDES; YTTRIUM OXIDES; HEAVY IONS; LATTICE PARAMETERS; MEV RANGE 10-100; MOESSBAUER EFFECT; XENON IONS; ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; COLLISIONS; ENERGY RANGE; IONS; IRON COMPOUNDS; MEV RANGE; OXIDES; OXYGEN COMPOUNDS; STRONTIUM COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS; 360206* - Ceramics, Cermets, & Refractories- Radiation Effects; 656003 - Condensed Matter Physics- Interactions between Beams & Condensed Matter- (1987-)

Citation Formats

Studer, F, Houpert, Ch, and Toulemonde, M Dartyge E. Local environment of iron in heavy ion-irradiated amorphous magnetic oxides by Moessbauer and x-ray absorption spectroscopy. United States: N. p., 1991. Web. doi:10.1016/0022-4596(91)90078-V.
Studer, F, Houpert, Ch, & Toulemonde, M Dartyge E. Local environment of iron in heavy ion-irradiated amorphous magnetic oxides by Moessbauer and x-ray absorption spectroscopy. United States. https://doi.org/10.1016/0022-4596(91)90078-V
Studer, F, Houpert, Ch, and Toulemonde, M Dartyge E. 1991. "Local environment of iron in heavy ion-irradiated amorphous magnetic oxides by Moessbauer and x-ray absorption spectroscopy". United States. https://doi.org/10.1016/0022-4596(91)90078-V.
@article{osti_5742622,
title = {Local environment of iron in heavy ion-irradiated amorphous magnetic oxides by Moessbauer and x-ray absorption spectroscopy},
author = {Studer, F and Houpert, Ch and Toulemonde, M Dartyge E.},
abstractNote = {Moessbauer and X-ray absorption spectroscopies of some crystallized iron oxides, Fe{sub 2}O{sub 3}, FePO{sub 4}, Fe{sub 3}PO{sub 7}, and SrMn{sub 1.85}Fe{sub 0.15}O{sub 2.5}, the garnet Y{sub 3}Fe{sub 5}O{sub 12}, and the barium hexaferrite BaFe{sub 12}O{sub 19} have been undertaken in order to look at the local order around iron in Y{sub 3}Fe{sub 5}O{sub 12} and BaFe{sub 12}O{sub 19} materials amorphized by irradiation with high energy (27 MeV/n) xenon ions accelerated by GANIL. Simulations of the Moessbauer spectra suggested the presence of fivefold coordinated iron in the amorphous irradiated compounds with a distribution of magnetic interactions due to the variations of the number of iron second neighbors. The XANES spectra at the Fe-K edge confirmed the fivefold coordination of iron in the amorphous ferrites, show that the local structure around iron appears to be similar although the original structures were different, and appear close to the one observed in the Fe{sub 3}PO{sub 7} compound in which iron stands in a trigonal bipyramidal environment.},
doi = {10.1016/0022-4596(91)90078-V},
url = {https://www.osti.gov/biblio/5742622}, journal = {Journal of Solid State Chemistry; (USA)},
issn = {0022-4596},
number = ,
volume = 91:2,
place = {United States},
year = {Mon Apr 01 00:00:00 EST 1991},
month = {Mon Apr 01 00:00:00 EST 1991}
}