Oxygen content, microstructure and Tc variation of La1.84Sr0.16CuOy

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Thermodynamic measurements of equilibrium oxygen partial pressure (PO2) as a function of oxygen content at 1173K have been performed on La1.84Sr0.16CuOy. These measurements confirmed the presence of traces of an impurity phase of the type La8-xSrxCu8O20 (an oxygen-deficient, perovskite structure) wh...

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Autores principales: Caneiro, A., Serafini, D., Prado, F., Ferrari, H., Jimenez-Crespo, A., Abriata, J.P.
Formato: JOUR
Materias:
Copper oxides
Impurities
Lanthanum compounds
Microstructure
Oxygen
Phase equilibria
Pressure measurement
Superconducting transition temperature
Superconductivity
Thermal effects
Thermal variables measurement
Thermodynamic stability
Controlled oxygen content
Lanthanum strontium copper oxides
High temperature superconductors
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00381098_v88_n5_p355_Caneiro
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
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spelling todo:paper_00381098_v88_n5_p355_Caneiro2023-10-03T14:49:08Z Oxygen content, microstructure and Tc variation of La1.84Sr0.16CuOy Caneiro, A. Serafini, D. Prado, F. Ferrari, H. Jimenez-Crespo, A. Abriata, J.P. Copper oxides Impurities Lanthanum compounds Microstructure Oxygen Phase equilibria Pressure measurement Superconducting transition temperature Superconductivity Thermal effects Thermal variables measurement Thermodynamic stability Controlled oxygen content Lanthanum strontium copper oxides High temperature superconductors Thermodynamic measurements of equilibrium oxygen partial pressure (PO2) as a function of oxygen content at 1173K have been performed on La1.84Sr0.16CuOy. These measurements confirmed the presence of traces of an impurity phase of the type La8-xSrxCu8O20 (an oxygen-deficient, perovskite structure) which is always present in sintered La2-xSrxCuOy type oxides. Samples of La1.84Sr0.16CuOy with controlled oxygen content were prepared taking into account the amount of oxygen related to this impurity phase. The superconducting properties of these samples were studied through ac susceptibility and a correlation where Tc decreases as the oxygen content decreases was found. © 1993. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00381098_v88_n5_p355_Caneiro
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Copper oxides
Impurities
Lanthanum compounds
Microstructure
Oxygen
Phase equilibria
Pressure measurement
Superconducting transition temperature
Superconductivity
Thermal effects
Thermal variables measurement
Thermodynamic stability
Controlled oxygen content
Lanthanum strontium copper oxides
High temperature superconductors
spellingShingle Copper oxides
Impurities
Lanthanum compounds
Microstructure
Oxygen
Phase equilibria
Pressure measurement
Superconducting transition temperature
Superconductivity
Thermal effects
Thermal variables measurement
Thermodynamic stability
Controlled oxygen content
Lanthanum strontium copper oxides
High temperature superconductors
Caneiro, A.
Serafini, D.
Prado, F.
Ferrari, H.
Jimenez-Crespo, A.
Abriata, J.P.
Oxygen content, microstructure and Tc variation of La1.84Sr0.16CuOy
topic_facet Copper oxides
Impurities
Lanthanum compounds
Microstructure
Oxygen
Phase equilibria
Pressure measurement
Superconducting transition temperature
Superconductivity
Thermal effects
Thermal variables measurement
Thermodynamic stability
Controlled oxygen content
Lanthanum strontium copper oxides
High temperature superconductors
description Thermodynamic measurements of equilibrium oxygen partial pressure (PO2) as a function of oxygen content at 1173K have been performed on La1.84Sr0.16CuOy. These measurements confirmed the presence of traces of an impurity phase of the type La8-xSrxCu8O20 (an oxygen-deficient, perovskite structure) which is always present in sintered La2-xSrxCuOy type oxides. Samples of La1.84Sr0.16CuOy with controlled oxygen content were prepared taking into account the amount of oxygen related to this impurity phase. The superconducting properties of these samples were studied through ac susceptibility and a correlation where Tc decreases as the oxygen content decreases was found. © 1993.
format JOUR
author Caneiro, A.
Serafini, D.
Prado, F.
Ferrari, H.
Jimenez-Crespo, A.
Abriata, J.P.
author_facet Caneiro, A.
Serafini, D.
Prado, F.
Ferrari, H.
Jimenez-Crespo, A.
Abriata, J.P.
author_sort Caneiro, A.
title Oxygen content, microstructure and Tc variation of La1.84Sr0.16CuOy
title_short Oxygen content, microstructure and Tc variation of La1.84Sr0.16CuOy
title_full Oxygen content, microstructure and Tc variation of La1.84Sr0.16CuOy
title_fullStr Oxygen content, microstructure and Tc variation of La1.84Sr0.16CuOy
title_full_unstemmed Oxygen content, microstructure and Tc variation of La1.84Sr0.16CuOy
title_sort oxygen content, microstructure and tc variation of la1.84sr0.16cuoy
url http://hdl.handle.net/20.500.12110/paper_00381098_v88_n5_p355_Caneiro
work_keys_str_mv AT caneiroa oxygencontentmicrostructureandtcvariationofla184sr016cuoy
AT serafinid oxygencontentmicrostructureandtcvariationofla184sr016cuoy
AT pradof oxygencontentmicrostructureandtcvariationofla184sr016cuoy
AT ferrarih oxygencontentmicrostructureandtcvariationofla184sr016cuoy
AT jimenezcrespoa oxygencontentmicrostructureandtcvariationofla184sr016cuoy
AT abriatajp oxygencontentmicrostructureandtcvariationofla184sr016cuoy
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