Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly

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We have measured the electrical resistivity ρ{variant}(T) of the chlorinated La2-xSrxCuO4-δ high-Tc superconductor, in a wide range of temperatures (40 ≤ T ≤ 800 K). The systematic effects in ρ{variant}(T) of Cl and Sr contents allowed us, within the Drude and VRH models, to determine the role playe...

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Autores principales: Acha, C., Bekeris, V., Urba, L., Polla, G., Levy, P., Leyva, G., de Benyacar, M.A.R., de la Cruz, F.
Formato: JOUR
Materias:
Ceramic materials
Charge carriers
Chlorination
Composition effects
Copper oxides
Crystal lattices
Doping (additives)
Electric conductivity measurement
Electron transport properties
Lanthanum compounds
Order disorder transitions
Strontium
Drude model
Lanthanum strontium copper oxide
Lattice parameters
VRH model
High temperature superconductors
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_09214534_v227_n3-4_p237_Acha
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_09214534_v227_n3-4_p237_Acha
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spelling todo:paper_09214534_v227_n3-4_p237_Acha2023-10-03T15:45:32Z Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly Acha, C. Bekeris, V. Urba, L. Polla, G. Levy, P. Leyva, G. de Benyacar, M.A.R. de la Cruz, F. Ceramic materials Charge carriers Chlorination Composition effects Copper oxides Crystal lattices Doping (additives) Electric conductivity measurement Electron transport properties Lanthanum compounds Order disorder transitions Strontium Drude model Lanthanum strontium copper oxide Lattice parameters VRH model High temperature superconductors We have measured the electrical resistivity ρ{variant}(T) of the chlorinated La2-xSrxCuO4-δ high-Tc superconductor, in a wide range of temperatures (40 ≤ T ≤ 800 K). The systematic effects in ρ{variant}(T) of Cl and Sr contents allowed us, within the Drude and VRH models, to determine the role played by Cl in electrical transport properties: carrier concentration decreases linearly with increasing Cl concentration, and Cl also modifies the electron localized low temperature conducting regime, increasing disorder for low Sr concentration (x = 0.065) while ordering the system for high Sr concentrations (0.08 ≤ x ≤ 0.2). Changes in lattice parameters indicate different structural site occupancies for Cl, depending on Sr doping: for low Sr concentrations an expansion in the c-crystallographic axis with increasing Cl content is observed, while a contraction results for higher Sr contents. © 1994. Fil:Acha, C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Bekeris, V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Urba, L. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Levy, P. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:de la Cruz, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_09214534_v227_n3-4_p237_Acha
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Ceramic materials
Charge carriers
Chlorination
Composition effects
Copper oxides
Crystal lattices
Doping (additives)
Electric conductivity measurement
Electron transport properties
Lanthanum compounds
Order disorder transitions
Strontium
Drude model
Lanthanum strontium copper oxide
Lattice parameters
VRH model
High temperature superconductors
spellingShingle Ceramic materials
Charge carriers
Chlorination
Composition effects
Copper oxides
Crystal lattices
Doping (additives)
Electric conductivity measurement
Electron transport properties
Lanthanum compounds
Order disorder transitions
Strontium
Drude model
Lanthanum strontium copper oxide
Lattice parameters
VRH model
High temperature superconductors
Acha, C.
Bekeris, V.
Urba, L.
Polla, G.
Levy, P.
Leyva, G.
de Benyacar, M.A.R.
de la Cruz, F.
Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly
topic_facet Ceramic materials
Charge carriers
Chlorination
Composition effects
Copper oxides
Crystal lattices
Doping (additives)
Electric conductivity measurement
Electron transport properties
Lanthanum compounds
Order disorder transitions
Strontium
Drude model
Lanthanum strontium copper oxide
Lattice parameters
VRH model
High temperature superconductors
description We have measured the electrical resistivity ρ{variant}(T) of the chlorinated La2-xSrxCuO4-δ high-Tc superconductor, in a wide range of temperatures (40 ≤ T ≤ 800 K). The systematic effects in ρ{variant}(T) of Cl and Sr contents allowed us, within the Drude and VRH models, to determine the role played by Cl in electrical transport properties: carrier concentration decreases linearly with increasing Cl concentration, and Cl also modifies the electron localized low temperature conducting regime, increasing disorder for low Sr concentration (x = 0.065) while ordering the system for high Sr concentrations (0.08 ≤ x ≤ 0.2). Changes in lattice parameters indicate different structural site occupancies for Cl, depending on Sr doping: for low Sr concentrations an expansion in the c-crystallographic axis with increasing Cl content is observed, while a contraction results for higher Sr contents. © 1994.
format JOUR
author Acha, C.
Bekeris, V.
Urba, L.
Polla, G.
Levy, P.
Leyva, G.
de Benyacar, M.A.R.
de la Cruz, F.
author_facet Acha, C.
Bekeris, V.
Urba, L.
Polla, G.
Levy, P.
Leyva, G.
de Benyacar, M.A.R.
de la Cruz, F.
author_sort Acha, C.
title Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly
title_short Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly
title_full Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly
title_fullStr Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly
title_full_unstemmed Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly
title_sort chlorination effects in electrical transport properties of ceramic la2-xsrxcuo4-δ-ycly
url http://hdl.handle.net/20.500.12110/paper_09214534_v227_n3-4_p237_Acha
work_keys_str_mv AT achac chlorinationeffectsinelectricaltransportpropertiesofceramicla2xsrxcuo4dycly
AT bekerisv chlorinationeffectsinelectricaltransportpropertiesofceramicla2xsrxcuo4dycly
AT urbal chlorinationeffectsinelectricaltransportpropertiesofceramicla2xsrxcuo4dycly
AT pollag chlorinationeffectsinelectricaltransportpropertiesofceramicla2xsrxcuo4dycly
AT levyp chlorinationeffectsinelectricaltransportpropertiesofceramicla2xsrxcuo4dycly
AT leyvag chlorinationeffectsinelectricaltransportpropertiesofceramicla2xsrxcuo4dycly
AT debenyacarmar chlorinationeffectsinelectricaltransportpropertiesofceramicla2xsrxcuo4dycly
AT delacruzf chlorinationeffectsinelectricaltransportpropertiesofceramicla2xsrxcuo4dycly
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