Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations

Autores
Kurian, Sajith; Bhattacharyya, Sayan; Desimoni, Judith; Peltzer y Blanca, Eitel Leopoldo; Gil Rebaza, Arles Víctor; Gajbhiye, N. S.
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
A controlled, one-step ammonolysis method with three different Fe/Ga ratios (70:30, 50:50, and 30:70) was used to synthesize functional nanocomposite materials consisting of 30-40 nm particles of γ′-Fe4N Fe4-xGaxN phases in a GaN and Fe-doped GaN phase matrix. The γ′-Fe4N, Fe4-xGaxN, and GaN phases were confirmed by the Rietveld analysis of the X-ray diffraction patterns, and the Fe-doped GaN phase was confirmed from Mo¨ssbauer spectroscopy and magnetization measurements. The magnetization of the superparamagnetic nanoparticles was expectedly reduced with the Ga incorporation in the samples. The coexistence of antiferromagnetic Fe4-xGaxN and the ferromagnetic γ′-Fe4N phases resulted in an exchange bias effect (hysteresis loop shift of 28 Oe at 5 K) and a gradual magnetic phase transition from 250 to 55 K. Mo¨ssbauer spectroscopic analysis showed a hyperfine magnetic field distribution that the ab initio calculations duly supported. Ab initio calculations of the equilibrium lattice and Mo¨ssbauer hyperfine parameters were also performed.
Fil: Kurian, Sajith. No especifíca;
Fil: Bhattacharyya, Sayan. No especifíca;
Fil: Desimoni, Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Peltzer y Blanca, Eitel Leopoldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; Argentina
Fil: Gil Rebaza, Arles Víctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Gajbhiye, N. S.. No especifíca;
Materia
Á-Fe4N-GaN NANOCOMPOSITES
AB-INITIO CALCULATIONS
MÖSSBAUER SPECTROSCOPY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/241403
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/241403
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio CalculationsKurian, SajithBhattacharyya, SayanDesimoni, JudithPeltzer y Blanca, Eitel LeopoldoGil Rebaza, Arles VíctorGajbhiye, N. S.Á-Fe4N-GaN NANOCOMPOSITESAB-INITIO CALCULATIONSMÖSSBAUER SPECTROSCOPYhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1A controlled, one-step ammonolysis method with three different Fe/Ga ratios (70:30, 50:50, and 30:70) was used to synthesize functional nanocomposite materials consisting of 30-40 nm particles of γ′-Fe4N Fe4-xGaxN phases in a GaN and Fe-doped GaN phase matrix. The γ′-Fe4N, Fe4-xGaxN, and GaN phases were confirmed by the Rietveld analysis of the X-ray diffraction patterns, and the Fe-doped GaN phase was confirmed from Mo¨ssbauer spectroscopy and magnetization measurements. The magnetization of the superparamagnetic nanoparticles was expectedly reduced with the Ga incorporation in the samples. The coexistence of antiferromagnetic Fe4-xGaxN and the ferromagnetic γ′-Fe4N phases resulted in an exchange bias effect (hysteresis loop shift of 28 Oe at 5 K) and a gradual magnetic phase transition from 250 to 55 K. Mo¨ssbauer spectroscopic analysis showed a hyperfine magnetic field distribution that the ab initio calculations duly supported. Ab initio calculations of the equilibrium lattice and Mo¨ssbauer hyperfine parameters were also performed.Fil: Kurian, Sajith. No especifíca;Fil: Bhattacharyya, Sayan. No especifíca;Fil: Desimoni, Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Peltzer y Blanca, Eitel Leopoldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; ArgentinaFil: Gil Rebaza, Arles Víctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; ArgentinaFil: Gajbhiye, N. S.. No especifíca;American Chemical Society2010-09info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/241403Kurian, Sajith; Bhattacharyya, Sayan; Desimoni, Judith; Peltzer y Blanca, Eitel Leopoldo; Gil Rebaza, Arles Víctor; et al.; Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations; American Chemical Society; Journal of Physical Chemistry C; 114; 41; 9-2010; 17542-175491932-7447CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/jp106221winfo:eu-repo/semantics/altIdentifier/doi/10.1021/jp106221winfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:09:18Zoai:ri.conicet.gov.ar:11336/241403instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:09:18.925CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations
title Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations
spellingShingle Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations
Kurian, Sajith
Á-Fe4N-GaN NANOCOMPOSITES
AB-INITIO CALCULATIONS
MÖSSBAUER SPECTROSCOPY
title_short Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations
title_full Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations
title_fullStr Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations
title_full_unstemmed Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations
title_sort Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations
dc.creator.none.fl_str_mv Kurian, Sajith
Bhattacharyya, Sayan
Desimoni, Judith
Peltzer y Blanca, Eitel Leopoldo
Gil Rebaza, Arles Víctor
Gajbhiye, N. S.
author Kurian, Sajith
author_facet Kurian, Sajith
Bhattacharyya, Sayan
Desimoni, Judith
Peltzer y Blanca, Eitel Leopoldo
Gil Rebaza, Arles Víctor
Gajbhiye, N. S.
author_role author
author2 Bhattacharyya, Sayan
Desimoni, Judith
Peltzer y Blanca, Eitel Leopoldo
Gil Rebaza, Arles Víctor
Gajbhiye, N. S.
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Á-Fe4N-GaN NANOCOMPOSITES
AB-INITIO CALCULATIONS
MÖSSBAUER SPECTROSCOPY
topic Á-Fe4N-GaN NANOCOMPOSITES
AB-INITIO CALCULATIONS
MÖSSBAUER SPECTROSCOPY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv A controlled, one-step ammonolysis method with three different Fe/Ga ratios (70:30, 50:50, and 30:70) was used to synthesize functional nanocomposite materials consisting of 30-40 nm particles of γ′-Fe4N Fe4-xGaxN phases in a GaN and Fe-doped GaN phase matrix. The γ′-Fe4N, Fe4-xGaxN, and GaN phases were confirmed by the Rietveld analysis of the X-ray diffraction patterns, and the Fe-doped GaN phase was confirmed from Mo¨ssbauer spectroscopy and magnetization measurements. The magnetization of the superparamagnetic nanoparticles was expectedly reduced with the Ga incorporation in the samples. The coexistence of antiferromagnetic Fe4-xGaxN and the ferromagnetic γ′-Fe4N phases resulted in an exchange bias effect (hysteresis loop shift of 28 Oe at 5 K) and a gradual magnetic phase transition from 250 to 55 K. Mo¨ssbauer spectroscopic analysis showed a hyperfine magnetic field distribution that the ab initio calculations duly supported. Ab initio calculations of the equilibrium lattice and Mo¨ssbauer hyperfine parameters were also performed.
Fil: Kurian, Sajith. No especifíca;
Fil: Bhattacharyya, Sayan. No especifíca;
Fil: Desimoni, Judith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Peltzer y Blanca, Eitel Leopoldo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física de Líquidos y Sistemas Biológicos. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física de Líquidos y Sistemas Biológicos; Argentina
Fil: Gil Rebaza, Arles Víctor. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Física La Plata. Universidad Nacional de La Plata. Facultad de Ciencias Exactas. Instituto de Física La Plata; Argentina
Fil: Gajbhiye, N. S.. No especifíca;
description A controlled, one-step ammonolysis method with three different Fe/Ga ratios (70:30, 50:50, and 30:70) was used to synthesize functional nanocomposite materials consisting of 30-40 nm particles of γ′-Fe4N Fe4-xGaxN phases in a GaN and Fe-doped GaN phase matrix. The γ′-Fe4N, Fe4-xGaxN, and GaN phases were confirmed by the Rietveld analysis of the X-ray diffraction patterns, and the Fe-doped GaN phase was confirmed from Mo¨ssbauer spectroscopy and magnetization measurements. The magnetization of the superparamagnetic nanoparticles was expectedly reduced with the Ga incorporation in the samples. The coexistence of antiferromagnetic Fe4-xGaxN and the ferromagnetic γ′-Fe4N phases resulted in an exchange bias effect (hysteresis loop shift of 28 Oe at 5 K) and a gradual magnetic phase transition from 250 to 55 K. Mo¨ssbauer spectroscopic analysis showed a hyperfine magnetic field distribution that the ab initio calculations duly supported. Ab initio calculations of the equilibrium lattice and Mo¨ssbauer hyperfine parameters were also performed.
publishDate 2010
dc.date.none.fl_str_mv 2010-09
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/241403
Kurian, Sajith; Bhattacharyya, Sayan; Desimoni, Judith; Peltzer y Blanca, Eitel Leopoldo; Gil Rebaza, Arles Víctor; et al.; Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations; American Chemical Society; Journal of Physical Chemistry C; 114; 41; 9-2010; 17542-17549
1932-7447
CONICET Digital
CONICET
url http://hdl.handle.net/11336/241403
identifier_str_mv Kurian, Sajith; Bhattacharyya, Sayan; Desimoni, Judith; Peltzer y Blanca, Eitel Leopoldo; Gil Rebaza, Arles Víctor; et al.; Investigation of γ′-Fe 4 N−GaN Nanocomposites: Structural and Magnetic Characterization, Mössbauer Spectroscopy and Ab Initio Calculations; American Chemical Society; Journal of Physical Chemistry C; 114; 41; 9-2010; 17542-17549
1932-7447
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/abs/10.1021/jp106221w
info:eu-repo/semantics/altIdentifier/doi/10.1021/jp106221w
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.21921

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