Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor
Autor(a) principal: | |
---|---|
Data de Publicação: | 2012 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/96274 |
Resumo: | We have synthesized highly oriented samples of the superconducting compound FeSe0.5Te0.5 and investigated its mechanical properties. These samples were characterized by scanning electron microscopy (SEM) with energy-dispersive analysis, x-ray diffraction, and electrical resistivity. The measured critical temperature is TC~14.5 K. Hardness and elastic modulus on the ab- and a(b)c-plane were obtained by instrumented indentation. The samples’ morphology consists of plate-like crystals with a lamellar structure. Two phases were observed with a typically eutectic microstructure composed by white and gray lamellas when observed with SEM using backscattered electrons. The white phase is richer in Te and poorer in Se than the gray phase. No significant differences in hardness and elastic modulus were observed between ab- and a(b)c-planes. Hardness profiles indicated values in the range 0.6–0.8 GPa at deep tip penetration depths, while the elastic modulus showed values in between 20–25 GPa. Cracking was occasionally observed in the ab-plane and at low loads. |
id |
UFRGS-2_708583d2363819eb0dc33874b41beb1d |
---|---|
oai_identifier_str |
oai:www.lume.ufrgs.br:10183/96274 |
network_acronym_str |
UFRGS-2 |
network_name_str |
Repositório Institucional da UFRGS |
repository_id_str |
|
spelling |
Pimentel Junior, Jorge LuizPureur Neto, PauloLopes, Cristiano SantosSerbena, Francisco CarlosFoerster, Carlos EugenioSilva, Simone Aparecida daJurelo, Alcione RobertoChinelatto, Adilson Luiz2014-06-10T02:05:11Z20120021-8979http://hdl.handle.net/10183/96274000837514We have synthesized highly oriented samples of the superconducting compound FeSe0.5Te0.5 and investigated its mechanical properties. These samples were characterized by scanning electron microscopy (SEM) with energy-dispersive analysis, x-ray diffraction, and electrical resistivity. The measured critical temperature is TC~14.5 K. Hardness and elastic modulus on the ab- and a(b)c-plane were obtained by instrumented indentation. The samples’ morphology consists of plate-like crystals with a lamellar structure. Two phases were observed with a typically eutectic microstructure composed by white and gray lamellas when observed with SEM using backscattered electrons. The white phase is richer in Te and poorer in Se than the gray phase. No significant differences in hardness and elastic modulus were observed between ab- and a(b)c-planes. Hardness profiles indicated values in the range 0.6–0.8 GPa at deep tip penetration depths, while the elastic modulus showed values in between 20–25 GPa. Cracking was occasionally observed in the ab-plane and at low loads.application/pdfengJournal of applied physics. New York. Vol. 111, no. 3 (Feb. 2012), 033908, 6 p.Materiais supercondutoresTemperatura de transição supercondutoraMódulos elásticosResistividade elétricaEstrutura eutéticaDurezaMicroscopia eletrônicaCompostos de ferroCompostos de selênioMechanical properties of highly oriented FeSe0.5Te0.5 superconductorEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000837514.pdf000837514.pdfTexto completo (inglês)application/pdf1271205http://www.lume.ufrgs.br/bitstream/10183/96274/1/000837514.pdf17d14650f6aab635eaf6c52325008366MD51TEXT000837514.pdf.txt000837514.pdf.txtExtracted Texttext/plain23756http://www.lume.ufrgs.br/bitstream/10183/96274/2/000837514.pdf.txta83dcae2b5b8a07c88f9258243a6140cMD52THUMBNAIL000837514.pdf.jpg000837514.pdf.jpgGenerated Thumbnailimage/jpeg2100http://www.lume.ufrgs.br/bitstream/10183/96274/3/000837514.pdf.jpg5a673a5ff4a6e33dac76dee793204d3dMD5310183/962742018-10-18 08:03:13.576oai:www.lume.ufrgs.br:10183/96274Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-10-18T11:03:13Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor |
title |
Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor |
spellingShingle |
Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor Pimentel Junior, Jorge Luiz Materiais supercondutores Temperatura de transição supercondutora Módulos elásticos Resistividade elétrica Estrutura eutética Dureza Microscopia eletrônica Compostos de ferro Compostos de selênio |
title_short |
Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor |
title_full |
Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor |
title_fullStr |
Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor |
title_full_unstemmed |
Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor |
title_sort |
Mechanical properties of highly oriented FeSe0.5Te0.5 superconductor |
author |
Pimentel Junior, Jorge Luiz |
author_facet |
Pimentel Junior, Jorge Luiz Pureur Neto, Paulo Lopes, Cristiano Santos Serbena, Francisco Carlos Foerster, Carlos Eugenio Silva, Simone Aparecida da Jurelo, Alcione Roberto Chinelatto, Adilson Luiz |
author_role |
author |
author2 |
Pureur Neto, Paulo Lopes, Cristiano Santos Serbena, Francisco Carlos Foerster, Carlos Eugenio Silva, Simone Aparecida da Jurelo, Alcione Roberto Chinelatto, Adilson Luiz |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Pimentel Junior, Jorge Luiz Pureur Neto, Paulo Lopes, Cristiano Santos Serbena, Francisco Carlos Foerster, Carlos Eugenio Silva, Simone Aparecida da Jurelo, Alcione Roberto Chinelatto, Adilson Luiz |
dc.subject.por.fl_str_mv |
Materiais supercondutores Temperatura de transição supercondutora Módulos elásticos Resistividade elétrica Estrutura eutética Dureza Microscopia eletrônica Compostos de ferro Compostos de selênio |
topic |
Materiais supercondutores Temperatura de transição supercondutora Módulos elásticos Resistividade elétrica Estrutura eutética Dureza Microscopia eletrônica Compostos de ferro Compostos de selênio |
description |
We have synthesized highly oriented samples of the superconducting compound FeSe0.5Te0.5 and investigated its mechanical properties. These samples were characterized by scanning electron microscopy (SEM) with energy-dispersive analysis, x-ray diffraction, and electrical resistivity. The measured critical temperature is TC~14.5 K. Hardness and elastic modulus on the ab- and a(b)c-plane were obtained by instrumented indentation. The samples’ morphology consists of plate-like crystals with a lamellar structure. Two phases were observed with a typically eutectic microstructure composed by white and gray lamellas when observed with SEM using backscattered electrons. The white phase is richer in Te and poorer in Se than the gray phase. No significant differences in hardness and elastic modulus were observed between ab- and a(b)c-planes. Hardness profiles indicated values in the range 0.6–0.8 GPa at deep tip penetration depths, while the elastic modulus showed values in between 20–25 GPa. Cracking was occasionally observed in the ab-plane and at low loads. |
publishDate |
2012 |
dc.date.issued.fl_str_mv |
2012 |
dc.date.accessioned.fl_str_mv |
2014-06-10T02:05:11Z |
dc.type.driver.fl_str_mv |
Estrangeiro info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10183/96274 |
dc.identifier.issn.pt_BR.fl_str_mv |
0021-8979 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000837514 |
identifier_str_mv |
0021-8979 000837514 |
url |
http://hdl.handle.net/10183/96274 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Journal of applied physics. New York. Vol. 111, no. 3 (Feb. 2012), 033908, 6 p. |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
instname_str |
Universidade Federal do Rio Grande do Sul (UFRGS) |
instacron_str |
UFRGS |
institution |
UFRGS |
reponame_str |
Repositório Institucional da UFRGS |
collection |
Repositório Institucional da UFRGS |
bitstream.url.fl_str_mv |
http://www.lume.ufrgs.br/bitstream/10183/96274/1/000837514.pdf http://www.lume.ufrgs.br/bitstream/10183/96274/2/000837514.pdf.txt http://www.lume.ufrgs.br/bitstream/10183/96274/3/000837514.pdf.jpg |
bitstream.checksum.fl_str_mv |
17d14650f6aab635eaf6c52325008366 a83dcae2b5b8a07c88f9258243a6140c 5a673a5ff4a6e33dac76dee793204d3d |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS) |
repository.mail.fl_str_mv |
|
_version_ |
1801224836235657216 |