Field and oxygen dependence of the magnetic irreversibility line in yba(2)cu(3)o(7-g)
Autor(a) principal: | |
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Data de Publicação: | 1994 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/104231 |
Resumo: | We report on de magnetic susceptibility measurements in polycrystalline YBa2Cu30 7- δ as a function of the oxygen content in the limit of small δ. We focus mainly on the detailed behavior of the zero-fie1dcooled- field-cooled irreversibility line at fields below 7 kOe. We find that this line shows a crossover from a H 2 dependence at higher fields to the more commonly observed H 2/3 behavior at lower fields. This feature is analogous to the anisotropy induced crossover from the high-field Gabay-Toulouse line to the low-field de Almeida-Thouless behavior, characteristic of the spin-glass transition. Our results are discussed in the light of a dirty-limit vortex-glass model where the grain charging energy plays a major role. Data conceming the behavior of the resistive transition as a function of the distribution of the oxygen vacancies are also presented. |
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Rodrigues Junior, PedroSchaf, JacobPureur Neto, Paulo2014-10-07T02:11:29Z19940163-1829http://hdl.handle.net/10183/104231000254336We report on de magnetic susceptibility measurements in polycrystalline YBa2Cu30 7- δ as a function of the oxygen content in the limit of small δ. We focus mainly on the detailed behavior of the zero-fie1dcooled- field-cooled irreversibility line at fields below 7 kOe. We find that this line shows a crossover from a H 2 dependence at higher fields to the more commonly observed H 2/3 behavior at lower fields. This feature is analogous to the anisotropy induced crossover from the high-field Gabay-Toulouse line to the low-field de Almeida-Thouless behavior, characteristic of the spin-glass transition. Our results are discussed in the light of a dirty-limit vortex-glass model where the grain charging energy plays a major role. Data conceming the behavior of the resistive transition as a function of the distribution of the oxygen vacancies are also presented.application/pdfengPhysical review. B, Condensed matter. New York. Vol. 49, no. 21 (June 1994), p. 15292-15298Física da matéria condensadaSuscetibilidade magnéticaMedidas fisicasSupercondutividadeAltas temperaturasCondutividade elétricaVidros de spinField and oxygen dependence of the magnetic irreversibility line in yba(2)cu(3)o(7-g)Estrangeiroinfo: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:UFRGSORIGINAL000254336.pdf000254336.pdfTexto completo (inglês)application/pdf1073678http://www.lume.ufrgs.br/bitstream/10183/104231/1/000254336.pdf28afa228564a614fb638dff0988790b3MD51TEXT000254336.pdf.txt000254336.pdf.txtExtracted Texttext/plain35385http://www.lume.ufrgs.br/bitstream/10183/104231/2/000254336.pdf.txtbc3e7b4b5296fa555c3ea9490974aed4MD5210183/1042312018-06-07 02:32:17.689029oai:www.lume.ufrgs.br:10183/104231Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2018-06-07T05:32:17Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Field and oxygen dependence of the magnetic irreversibility line in yba(2)cu(3)o(7-g) |
title |
Field and oxygen dependence of the magnetic irreversibility line in yba(2)cu(3)o(7-g) |
spellingShingle |
Field and oxygen dependence of the magnetic irreversibility line in yba(2)cu(3)o(7-g) Rodrigues Junior, Pedro Física da matéria condensada Suscetibilidade magnética Medidas fisicas Supercondutividade Altas temperaturas Condutividade elétrica Vidros de spin |
title_short |
Field and oxygen dependence of the magnetic irreversibility line in yba(2)cu(3)o(7-g) |
title_full |
Field and oxygen dependence of the magnetic irreversibility line in yba(2)cu(3)o(7-g) |
title_fullStr |
Field and oxygen dependence of the magnetic irreversibility line in yba(2)cu(3)o(7-g) |
title_full_unstemmed |
Field and oxygen dependence of the magnetic irreversibility line in yba(2)cu(3)o(7-g) |
title_sort |
Field and oxygen dependence of the magnetic irreversibility line in yba(2)cu(3)o(7-g) |
author |
Rodrigues Junior, Pedro |
author_facet |
Rodrigues Junior, Pedro Schaf, Jacob Pureur Neto, Paulo |
author_role |
author |
author2 |
Schaf, Jacob Pureur Neto, Paulo |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Rodrigues Junior, Pedro Schaf, Jacob Pureur Neto, Paulo |
dc.subject.por.fl_str_mv |
Física da matéria condensada Suscetibilidade magnética Medidas fisicas Supercondutividade Altas temperaturas Condutividade elétrica Vidros de spin |
topic |
Física da matéria condensada Suscetibilidade magnética Medidas fisicas Supercondutividade Altas temperaturas Condutividade elétrica Vidros de spin |
description |
We report on de magnetic susceptibility measurements in polycrystalline YBa2Cu30 7- δ as a function of the oxygen content in the limit of small δ. We focus mainly on the detailed behavior of the zero-fie1dcooled- field-cooled irreversibility line at fields below 7 kOe. We find that this line shows a crossover from a H 2 dependence at higher fields to the more commonly observed H 2/3 behavior at lower fields. This feature is analogous to the anisotropy induced crossover from the high-field Gabay-Toulouse line to the low-field de Almeida-Thouless behavior, characteristic of the spin-glass transition. Our results are discussed in the light of a dirty-limit vortex-glass model where the grain charging energy plays a major role. Data conceming the behavior of the resistive transition as a function of the distribution of the oxygen vacancies are also presented. |
publishDate |
1994 |
dc.date.issued.fl_str_mv |
1994 |
dc.date.accessioned.fl_str_mv |
2014-10-07T02:11:29Z |
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/10183/104231 |
dc.identifier.issn.pt_BR.fl_str_mv |
0163-1829 |
dc.identifier.nrb.pt_BR.fl_str_mv |
000254336 |
identifier_str_mv |
0163-1829 000254336 |
url |
http://hdl.handle.net/10183/104231 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.pt_BR.fl_str_mv |
Physical review. B, Condensed matter. New York. Vol. 49, no. 21 (June 1994), p. 15292-15298 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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application/pdf |
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reponame:Repositório Institucional da UFRGS instname:Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS |
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UFRGS |
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