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Titolo:
Local interactions of Fe-57 after electron capture of Co-57 implanted in alpha-Al2O3 and in alpha-Fe2O3
Autore:
Dezsi, I; Szucs, I; Fetzer, C; Pattyn, H; Langouche, G; Pfannes, HD; Magalhaes-Paniago, R;
Indirizzi:
MTA, KFKI Res Inst Particle & Nucl Phys, H-1525 Budapest 114, Hungary MTABudapest Hungary 114 ticle & Nucl Phys, H-1525 Budapest 114, Hungary Katholieke Univ Leuven, IKS, B-3001 Louvain, Belgium Katholieke Univ Leuven Louvain Belgium B-3001 S, B-3001 Louvain, Belgium Univ Fed Minas Gerais, Dept Fis, BR-30161 Belo Horizonte, MG, Brazil Univ Fed Minas Gerais Belo Horizonte MG Brazil BR-30161 zonte, MG, Brazil
Titolo Testata:
JOURNAL OF PHYSICS-CONDENSED MATTER
fascicolo: 10, volume: 12, anno: 2000,
pagine: 2291 - 2296
SICI:
0953-8984(20000313)12:10<2291:LIOFAE>2.0.ZU;2-Z
Fonte:
ISI
Lingua:
ENG
Soggetto:
MOSSBAUER RELAXATION SPECTRA; MOLECULAR-DYNAMICS; DISPLACEMENT CASCADES; IRON; DAMAGE; SOLIDS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
--discip_EC--
Citazioni:
23
Recensione:
Indirizzi per estratti:
Indirizzo: Dezsi, I MTA, KFKI Res Inst Particle & Nucl Phys, H-1525 Budapest 114, Hungary MTA Budapest Hungary 114 ucl Phys, H-1525 Budapest 114, Hungary
Citazione:
I. Dezsi et al., "Local interactions of Fe-57 after electron capture of Co-57 implanted in alpha-Al2O3 and in alpha-Fe2O3", J PHYS-COND, 12(10), 2000, pp. 2291-2296

Abstract

alpha-Al2O3 and alpha-Fe2O3 were implanted with Co-57 at room temperature,alpha-Al2O3 showed complex Mossbauer spectra indicating paramagnetic hyperfine splitting for high-spin Fe3+ and electric quadrupole-split spectra forFe2+ ions. In canted antiferromagnet alpha-Fe2O3, the implanted Co atoms were positioned substitutionally in Fe2O3 and at higher doses in Fe3O4 and in Fe1-xO. In the different phases, the ions were in Fe2+ and/or in Fe3+ stares after the electron capture of Co-57; no after-effects were observed. The results suggest that the phases are formed during fast cooling and crystallization of the oxide from the high-temperature state of the thermal spike.

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Documento generato il 06/04/20 alle ore 04:55:23