Mössbauer spectral study of the RFe11.5Ta0.5 (R=Tb, Dy, Ho, Er, and Lu) compounds

18 pages, 15 figures, 10 tables.-- PACS number(s): 75.50.Bb, 75.50.Ww, 76.80.+y

Detalhes bibliográficos
Autores: Piquer, Cristina, Rubín, Javier, Bartolomé, Juan, Kuncser, Victor, Filoti, George
Formato: artículo
Fecha de publicación:2006
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/19815
Acesso em linha:http://hdl.handle.net/10261/19815
Access Level:acceso abierto
Palavra-chave:Terbium alloys
Dysprosium alloys
Holmium alloys
Erbium alloys
Lutetium alloys
Iron alloys
Tantalum alloys
Ferromagnetic materials
Mossbauer effect
Electric field gradient
Crystal symmetry
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spelling Mössbauer spectral study of the RFe11.5Ta0.5 (R=Tb, Dy, Ho, Er, and Lu) compoundsPiquer, CristinaRubín, JavierBartolomé, JuanKuncser, VictorFiloti, GeorgeTerbium alloysDysprosium alloysHolmium alloysErbium alloysLutetium alloysIron alloysTantalum alloysFerromagnetic materialsMossbauer effectElectric field gradientCrystal symmetry18 pages, 15 figures, 10 tables.-- PACS number(s): 75.50.Bb, 75.50.Ww, 76.80.+yThe paper presents an iron-57 Mössbauer spectral study of RFe11.5Ta0.5, with R=Tb, Dy, Ho, Er, Lu, and an evaluation of the different contributions to the hyperfine magnetic fields. The Mössbauer spectra have been analyzed with a model that considers both the distribution of the tantalum atoms in the near-neighbor environment of the iron atoms and the relative orientation of the hyperfine field and the principal axis of the electric field gradient. Their possible directions in the ThMn12 structure have been determined from a close examination of the point symmetry of each iron site. A local model for the hyperfine field which enables to determine their components from experimental data, has been developed and a calculation of the lattice dipolar hyperfine field in RFe11.5Ta0.5 has been performed. We have investigated in detail the origin and influence of the contributions to the hyperfine field coming from self 3d polarization, the iron and rare earth transferred fields and the orbital and dipolar hyperfine fields. The iron and rare earth transferred fields have been analyzed for RFe11.5Ta0.5 and other rare earth-iron intermetallic compounds. From this analysis it is shown that the iron transferred fields are different at each crystallographic site, and comparable to the self 3d polarization contributions, and that the rare earth transferred field is mainly originated by the indirect exchange between the rare earth 4f and iron 3d electrons.This work was financed by the MAT 02/166 and MAT 2000/0107/P4-02 MCYT projects (Spanish government). C.P. thanks MCYT for financial Grant No. PN73195091Y.Peer reviewedAmerican Physical Society200920092006info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501421471 bytesapplication/pdfhttp://hdl.handle.net/10261/19815reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1103/PhysRevB.73.174433info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/198152026-05-22T06:33:51Z
dc.title.none.fl_str_mv Mössbauer spectral study of the RFe11.5Ta0.5 (R=Tb, Dy, Ho, Er, and Lu) compounds
title Mössbauer spectral study of the RFe11.5Ta0.5 (R=Tb, Dy, Ho, Er, and Lu) compounds
spellingShingle Mössbauer spectral study of the RFe11.5Ta0.5 (R=Tb, Dy, Ho, Er, and Lu) compounds
Piquer, Cristina
Terbium alloys
Dysprosium alloys
Holmium alloys
Erbium alloys
Lutetium alloys
Iron alloys
Tantalum alloys
Ferromagnetic materials
Mossbauer effect
Electric field gradient
Crystal symmetry
title_short Mössbauer spectral study of the RFe11.5Ta0.5 (R=Tb, Dy, Ho, Er, and Lu) compounds
title_full Mössbauer spectral study of the RFe11.5Ta0.5 (R=Tb, Dy, Ho, Er, and Lu) compounds
title_fullStr Mössbauer spectral study of the RFe11.5Ta0.5 (R=Tb, Dy, Ho, Er, and Lu) compounds
title_full_unstemmed Mössbauer spectral study of the RFe11.5Ta0.5 (R=Tb, Dy, Ho, Er, and Lu) compounds
title_sort Mössbauer spectral study of the RFe11.5Ta0.5 (R=Tb, Dy, Ho, Er, and Lu) compounds
dc.creator.none.fl_str_mv Piquer, Cristina
Rubín, Javier
Bartolomé, Juan
Kuncser, Victor
Filoti, George
author Piquer, Cristina
author_facet Piquer, Cristina
Rubín, Javier
Bartolomé, Juan
Kuncser, Victor
Filoti, George
author_role author
author2 Rubín, Javier
Bartolomé, Juan
Kuncser, Victor
Filoti, George
author2_role author
author
author
author
dc.subject.none.fl_str_mv Terbium alloys
Dysprosium alloys
Holmium alloys
Erbium alloys
Lutetium alloys
Iron alloys
Tantalum alloys
Ferromagnetic materials
Mossbauer effect
Electric field gradient
Crystal symmetry
topic Terbium alloys
Dysprosium alloys
Holmium alloys
Erbium alloys
Lutetium alloys
Iron alloys
Tantalum alloys
Ferromagnetic materials
Mossbauer effect
Electric field gradient
Crystal symmetry
description 18 pages, 15 figures, 10 tables.-- PACS number(s): 75.50.Bb, 75.50.Ww, 76.80.+y
publishDate 2006
dc.date.none.fl_str_mv 2006
2009
2009
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/19815
url http://hdl.handle.net/10261/19815
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1103/PhysRevB.73.174433
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 421471 bytes
application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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