Structural, vibrational and electronic properties in the glass-crystal transition of thin films Sb₇₀Te₃₀ doped with Sn

Autores
Bilovol, Vitaliy; Fontana, Marcelo Raúl; Rocca, Javier Alejandro; Medina Chanduví, Hugo Harold; Mudarra Navarro, Azucena Marisol; Gil Rebaza, Arles Víctor; Errico, Leonardo Antonio; Liang, Akun; Errandonea, Daniel; Ureña, María Andrea
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Antimony-telluride based phase-change materials doped with Sn have been proposed to be ideal materials for improving the performance of phase-change memories. It is well known that Sb₇₀Te₃₀ thin films show a sharp fall in the electrical resistance in a narrow temperature range when heating. Therefore, it is interesting to study the effect of adding Sn into this composition. In this work, undoped and Sn-doped SbeTe thin films of composition Snₓ[Sb₀.₇₀Te₀.₃₀]₁₀₀₋ₓ, with x = 0.0, 2.5, 5.0 and 7.5 at. %, have been obtained by pulsed laser deposition. Their electrical resistance has been measured while heating from room temperature to 650 K. A sharp fall in the electrical resistance, associated to the glass-crystal transition, has been detected in all the samples within a narrow temperature range. The onset temperature of this transformation increases with the Sn content. Both as-obtained and thermally-treated films have been structurally characterized by X-ray and by Raman spectroscopy. We have compared the results among these compositions in terms of the identified crystallization products, transformation onset temperatures, transformation temperature ranges and amorphous/crystallized electrical resistance ratio. We have found that the frequency of the Raman modes decreases with Sndoping. Finally, in order to study the electronic structure and to determine the band gap, the frequencies of the allowed Raman modes and the vibration directions of the Sb₇₀Te₃₀ compound, Density Functional Theory based ab initio calculations have been performed as a function of the Sn concentration.
Facultad de Ciencias Exactas
Instituto de Física La Plata
Materia
Ciencias Exactas
Física
chalcogenide glasses
non-volatile memories
Raman spectroscopy
DFT
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/162206

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repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Structural, vibrational and electronic properties in the glass-crystal transition of thin films Sb₇₀Te₃₀ doped with SnBilovol, VitaliyFontana, Marcelo RaúlRocca, Javier AlejandroMedina Chanduví, Hugo HaroldMudarra Navarro, Azucena MarisolGil Rebaza, Arles VíctorErrico, Leonardo AntonioLiang, AkunErrandonea, DanielUreña, María AndreaCiencias ExactasFísicachalcogenide glassesnon-volatile memoriesRaman spectroscopyDFTAntimony-telluride based phase-change materials doped with Sn have been proposed to be ideal materials for improving the performance of phase-change memories. It is well known that Sb₇₀Te₃₀ thin films show a sharp fall in the electrical resistance in a narrow temperature range when heating. Therefore, it is interesting to study the effect of adding Sn into this composition. In this work, undoped and Sn-doped SbeTe thin films of composition Snₓ[Sb₀.₇₀Te₀.₃₀]₁₀₀₋ₓ, with x = 0.0, 2.5, 5.0 and 7.5 at. %, have been obtained by pulsed laser deposition. Their electrical resistance has been measured while heating from room temperature to 650 K. A sharp fall in the electrical resistance, associated to the glass-crystal transition, has been detected in all the samples within a narrow temperature range. The onset temperature of this transformation increases with the Sn content. Both as-obtained and thermally-treated films have been structurally characterized by X-ray and by Raman spectroscopy. We have compared the results among these compositions in terms of the identified crystallization products, transformation onset temperatures, transformation temperature ranges and amorphous/crystallized electrical resistance ratio. We have found that the frequency of the Raman modes decreases with Sndoping. Finally, in order to study the electronic structure and to determine the band gap, the frequencies of the allowed Raman modes and the vibration directions of the Sb₇₀Te₃₀ compound, Density Functional Theory based ab initio calculations have been performed as a function of the Sn concentration.Facultad de Ciencias ExactasInstituto de Física La Plata2020info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/162206enginfo:eu-repo/semantics/altIdentifier/issn/0925-8388info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2020.156307info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:42:36Zoai:sedici.unlp.edu.ar:10915/162206Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:42:37.183SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Structural, vibrational and electronic properties in the glass-crystal transition of thin films Sb₇₀Te₃₀ doped with Sn
title Structural, vibrational and electronic properties in the glass-crystal transition of thin films Sb₇₀Te₃₀ doped with Sn
spellingShingle Structural, vibrational and electronic properties in the glass-crystal transition of thin films Sb₇₀Te₃₀ doped with Sn
Bilovol, Vitaliy
Ciencias Exactas
Física
chalcogenide glasses
non-volatile memories
Raman spectroscopy
DFT
title_short Structural, vibrational and electronic properties in the glass-crystal transition of thin films Sb₇₀Te₃₀ doped with Sn
title_full Structural, vibrational and electronic properties in the glass-crystal transition of thin films Sb₇₀Te₃₀ doped with Sn
title_fullStr Structural, vibrational and electronic properties in the glass-crystal transition of thin films Sb₇₀Te₃₀ doped with Sn
title_full_unstemmed Structural, vibrational and electronic properties in the glass-crystal transition of thin films Sb₇₀Te₃₀ doped with Sn
title_sort Structural, vibrational and electronic properties in the glass-crystal transition of thin films Sb₇₀Te₃₀ doped with Sn
dc.creator.none.fl_str_mv Bilovol, Vitaliy
Fontana, Marcelo Raúl
Rocca, Javier Alejandro
Medina Chanduví, Hugo Harold
Mudarra Navarro, Azucena Marisol
Gil Rebaza, Arles Víctor
Errico, Leonardo Antonio
Liang, Akun
Errandonea, Daniel
Ureña, María Andrea
author Bilovol, Vitaliy
author_facet Bilovol, Vitaliy
Fontana, Marcelo Raúl
Rocca, Javier Alejandro
Medina Chanduví, Hugo Harold
Mudarra Navarro, Azucena Marisol
Gil Rebaza, Arles Víctor
Errico, Leonardo Antonio
Liang, Akun
Errandonea, Daniel
Ureña, María Andrea
author_role author
author2 Fontana, Marcelo Raúl
Rocca, Javier Alejandro
Medina Chanduví, Hugo Harold
Mudarra Navarro, Azucena Marisol
Gil Rebaza, Arles Víctor
Errico, Leonardo Antonio
Liang, Akun
Errandonea, Daniel
Ureña, María Andrea
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Física
chalcogenide glasses
non-volatile memories
Raman spectroscopy
DFT
topic Ciencias Exactas
Física
chalcogenide glasses
non-volatile memories
Raman spectroscopy
DFT
dc.description.none.fl_txt_mv Antimony-telluride based phase-change materials doped with Sn have been proposed to be ideal materials for improving the performance of phase-change memories. It is well known that Sb₇₀Te₃₀ thin films show a sharp fall in the electrical resistance in a narrow temperature range when heating. Therefore, it is interesting to study the effect of adding Sn into this composition. In this work, undoped and Sn-doped SbeTe thin films of composition Snₓ[Sb₀.₇₀Te₀.₃₀]₁₀₀₋ₓ, with x = 0.0, 2.5, 5.0 and 7.5 at. %, have been obtained by pulsed laser deposition. Their electrical resistance has been measured while heating from room temperature to 650 K. A sharp fall in the electrical resistance, associated to the glass-crystal transition, has been detected in all the samples within a narrow temperature range. The onset temperature of this transformation increases with the Sn content. Both as-obtained and thermally-treated films have been structurally characterized by X-ray and by Raman spectroscopy. We have compared the results among these compositions in terms of the identified crystallization products, transformation onset temperatures, transformation temperature ranges and amorphous/crystallized electrical resistance ratio. We have found that the frequency of the Raman modes decreases with Sndoping. Finally, in order to study the electronic structure and to determine the band gap, the frequencies of the allowed Raman modes and the vibration directions of the Sb₇₀Te₃₀ compound, Density Functional Theory based ab initio calculations have been performed as a function of the Sn concentration.
Facultad de Ciencias Exactas
Instituto de Física La Plata
description Antimony-telluride based phase-change materials doped with Sn have been proposed to be ideal materials for improving the performance of phase-change memories. It is well known that Sb₇₀Te₃₀ thin films show a sharp fall in the electrical resistance in a narrow temperature range when heating. Therefore, it is interesting to study the effect of adding Sn into this composition. In this work, undoped and Sn-doped SbeTe thin films of composition Snₓ[Sb₀.₇₀Te₀.₃₀]₁₀₀₋ₓ, with x = 0.0, 2.5, 5.0 and 7.5 at. %, have been obtained by pulsed laser deposition. Their electrical resistance has been measured while heating from room temperature to 650 K. A sharp fall in the electrical resistance, associated to the glass-crystal transition, has been detected in all the samples within a narrow temperature range. The onset temperature of this transformation increases with the Sn content. Both as-obtained and thermally-treated films have been structurally characterized by X-ray and by Raman spectroscopy. We have compared the results among these compositions in terms of the identified crystallization products, transformation onset temperatures, transformation temperature ranges and amorphous/crystallized electrical resistance ratio. We have found that the frequency of the Raman modes decreases with Sndoping. Finally, in order to study the electronic structure and to determine the band gap, the frequencies of the allowed Raman modes and the vibration directions of the Sb₇₀Te₃₀ compound, Density Functional Theory based ab initio calculations have been performed as a function of the Sn concentration.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/162206
url http://sedici.unlp.edu.ar/handle/10915/162206
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language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0925-8388
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jallcom.2020.156307
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
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repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
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