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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" (1994) Physica C: Superconductivity and its applications. 227(3-4):237-244
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Abstract:

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.

Registro:

Documento: Artículo
Título:Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly
Autor:Acha, C.; Bekeris, V.; Urba, L.; Polla, G.; Levy, P.; Leyva, G.; de Benyacar, M.A.R.; de la Cruz, F.
Filiación:Laboratorio de Bajas Temperaturas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Ciudad Universitaria, Pab. I (1428) Cap. Fed., Argentina, Argentina
División Física del Sólido, Departamento de Física, Comisión Nacional de Energia Atómica, Libertador 8250 (1429) Cap. Fed., Argentina
Palabras clave: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
Año:1994
Volumen:227
Número:3-4
Página de inicio:237
Página de fin:244
DOI: http://dx.doi.org/10.1016/0921-4534(94)90077-9
Título revista:Physica C: Superconductivity and its applications
Título revista abreviado:Phys C Supercond Appl
ISSN:09214534
CODEN:PHYCE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09214534_v227_n3-4_p237_Acha

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Citas:

---------- APA ----------
Acha, C., Bekeris, V., Urba, L., Polla, G., Levy, P., Leyva, G., de Benyacar, M.A.R.,..., de la Cruz, F. (1994) . Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly. Physica C: Superconductivity and its applications, 227(3-4), 237-244.
http://dx.doi.org/10.1016/0921-4534(94)90077-9
---------- CHICAGO ----------
Acha, C., Bekeris, V., Urba, L., Polla, G., Levy, P., Leyva, G., et al. "Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly" . Physica C: Superconductivity and its applications 227, no. 3-4 (1994) : 237-244.
http://dx.doi.org/10.1016/0921-4534(94)90077-9
---------- MLA ----------
Acha, C., Bekeris, V., Urba, L., Polla, G., Levy, P., Leyva, G., et al. "Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly" . Physica C: Superconductivity and its applications, vol. 227, no. 3-4, 1994, pp. 237-244.
http://dx.doi.org/10.1016/0921-4534(94)90077-9
---------- VANCOUVER ----------
Acha, C., Bekeris, V., Urba, L., Polla, G., Levy, P., Leyva, G., et al. Chlorination effects in electrical transport properties of ceramic La2-xSrxCuO4-δ-yCly. Phys C Supercond Appl. 1994;227(3-4):237-244.
http://dx.doi.org/10.1016/0921-4534(94)90077-9