Hyperfine interactions at ¹⁸¹Hf(→¹⁸¹Ta) impurities implanted in Er₂O₃ and Gd₂O₃: structural and electronic dependence of the EFG in bixbyite sesquioxides

The time-differential-perturbed γ-γ angular-correlation technique (TDPAC) with ion-implanted ¹⁸¹Hf tracers has been applied to study the hyperfine interactions of ¹⁸¹Ta impurities in the cubic bixbyite structure of Er₂O₃ and Gd₂O₃. The TDPAC experiments were performed in air in the temperature range...

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Detalles Bibliográficos
Autores principales:	Errico, Leonardo Antonio, Rentería, Mario, Pasquevich, Alberto Felipe, Bibiloni, Aníbal Guillermo, Freitag, Kristian
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2001
Materias:	Ciencias Exactas Física Doping and impurity implantation in other materials Mössbauer effect; other gamma-ray spectroscopy Nuclear states and interactions
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/146300
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-146300
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Física Doping and impurity implantation in other materials Mössbauer effect; other gamma-ray spectroscopy Nuclear states and interactions
spellingShingle	Ciencias Exactas Física Doping and impurity implantation in other materials Mössbauer effect; other gamma-ray spectroscopy Nuclear states and interactions Errico, Leonardo Antonio Rentería, Mario Pasquevich, Alberto Felipe Bibiloni, Aníbal Guillermo Freitag, Kristian Hyperfine interactions at ¹⁸¹Hf(→¹⁸¹Ta) impurities implanted in Er₂O₃ and Gd₂O₃: structural and electronic dependence of the EFG in bixbyite sesquioxides
topic_facet	Ciencias Exactas Física Doping and impurity implantation in other materials Mössbauer effect; other gamma-ray spectroscopy Nuclear states and interactions
description	The time-differential-perturbed γ-γ angular-correlation technique (TDPAC) with ion-implanted ¹⁸¹Hf tracers has been applied to study the hyperfine interactions of ¹⁸¹Ta impurities in the cubic bixbyite structure of Er₂O₃ and Gd₂O₃. The TDPAC experiments were performed in air in the temperature range 300-1073 K (in the case of Er₂O₃) and 300-1173 K (in the case of Gd₂O₃). Three electrical-quadrupole interactions were found in each oxide in the whole studied temperature range. Two of them were attributed to the electric-field gradients (EFG) acting on ¹⁸¹Ta probes substitutionally located on the two nonequivalent free-of-defects cation sites of the bixbyite structure. The EFG results are compared with predictions of the point-charge model and discussed together with previous results obtained with the probes ¹¹¹Cd and ¹⁸¹Ta in other isomorphous sesquioxides. The temperature dependence of the hyperfine parameters for both oxides is also discussed in terms of dilatometric expansion data.
format	Articulo Articulo
author	Errico, Leonardo Antonio Rentería, Mario Pasquevich, Alberto Felipe Bibiloni, Aníbal Guillermo Freitag, Kristian
author_facet	Errico, Leonardo Antonio Rentería, Mario Pasquevich, Alberto Felipe Bibiloni, Aníbal Guillermo Freitag, Kristian
author_sort	Errico, Leonardo Antonio
title	Hyperfine interactions at ¹⁸¹Hf(→¹⁸¹Ta) impurities implanted in Er₂O₃ and Gd₂O₃: structural and electronic dependence of the EFG in bixbyite sesquioxides
title_short	Hyperfine interactions at ¹⁸¹Hf(→¹⁸¹Ta) impurities implanted in Er₂O₃ and Gd₂O₃: structural and electronic dependence of the EFG in bixbyite sesquioxides
title_full	Hyperfine interactions at ¹⁸¹Hf(→¹⁸¹Ta) impurities implanted in Er₂O₃ and Gd₂O₃: structural and electronic dependence of the EFG in bixbyite sesquioxides
title_fullStr	Hyperfine interactions at ¹⁸¹Hf(→¹⁸¹Ta) impurities implanted in Er₂O₃ and Gd₂O₃: structural and electronic dependence of the EFG in bixbyite sesquioxides
title_full_unstemmed	Hyperfine interactions at ¹⁸¹Hf(→¹⁸¹Ta) impurities implanted in Er₂O₃ and Gd₂O₃: structural and electronic dependence of the EFG in bixbyite sesquioxides
title_sort	hyperfine interactions at ¹⁸¹hf(→¹⁸¹ta) impurities implanted in er₂o₃ and gd₂o₃: structural and electronic dependence of the efg in bixbyite sesquioxides
publishDate	2001
url	http://sedici.unlp.edu.ar/handle/10915/146300
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Hyperfine interactions at ¹⁸¹Hf(→¹⁸¹Ta) impurities implanted in Er₂O₃ and Gd₂O₃: structural and electronic dependence of the EFG in bixbyite sesquioxides

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