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Bekeris, V.; Ferrari, H.; Acha, C.; Levy, P.; Polla, G.; Leyva, G. "Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors" (1994) Physica C: Superconductivity and its applications. 234(1-2):49-56
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Abstract:

The AC susceptibility, χAC(T), with superimposed DC magnetic field, HDSa, has been measured as a function of temperature in bulk sintered LaSrCuO, for zero-field cooled (ZFC) and field-cooled (FC) samples. Results are analyzed within Kim's critical-state model extended to a granular superconductor, where the role of grains is to determine the temperature-dependent effective permeability, μeff(T), and the effective intergranular local field, Heffj(HDCa, T), which depends on the applied field, HDCa and the thermal and magnetic history, accounting for the observed hysteresis. A method to determine field-independent intergranular critical-state parameters (critical current at zero field and temperature-dependent density of pinning forces as well as μeff(T)) and the proper scaling of Heffj(HDCa, T) for ZFC and FC conditions is described. The calculated AC susceptibility for the whole temperature range for both magnetic conditions reproduces the main features of the experimental results. © 1994.

Registro:

Documento: Artículo
Título:Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors
Autor:Bekeris, V.; Ferrari, H.; Acha, C.; Levy, P.; Polla, G.; Leyva, G.
Filiación:Laboratorio de Bajas Temperaturas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Ciudad Universitaria, Pab. I, (1428) Cap. Fed., Argentina
División Fisica del Sólido, Departamento de Fisica, Comisión Nacional de Energia Atómica, Libertador 8250, (1429) Cap. Fed., Argentina
Palabras clave:Calculations; High temperature superconductors; Hysteresis; Magnetic fields; Magnetic permeability; Magnetic variables measurement; Sintering; Thermal effects; AC susceptibility; Effective intergranular local field; Field cooled material; Field independent integranular critical state parameter; Granular superconductor; Hysteretical temperature dependence; Kims critical state model; Temperature dependent effective permeability; Zero field cooled material; Oxide superconductors
Año:1994
Volumen:234
Número:1-2
Página de inicio:49
Página de fin:56
DOI: http://dx.doi.org/10.1016/0921-4534(94)90053-1
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_v234_n1-2_p49_Bekeris

Referencias:

  • Clem, Granular and superconducting-glass properties of the high-temperature superconductors (1988) Physica C: Superconductivity, 153-155, p. 50
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Citas:

---------- APA ----------
Bekeris, V., Ferrari, H., Acha, C., Levy, P., Polla, G. & Leyva, G. (1994) . Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors. Physica C: Superconductivity and its applications, 234(1-2), 49-56.
http://dx.doi.org/10.1016/0921-4534(94)90053-1
---------- CHICAGO ----------
Bekeris, V., Ferrari, H., Acha, C., Levy, P., Polla, G., Leyva, G. "Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors" . Physica C: Superconductivity and its applications 234, no. 1-2 (1994) : 49-56.
http://dx.doi.org/10.1016/0921-4534(94)90053-1
---------- MLA ----------
Bekeris, V., Ferrari, H., Acha, C., Levy, P., Polla, G., Leyva, G. "Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors" . Physica C: Superconductivity and its applications, vol. 234, no. 1-2, 1994, pp. 49-56.
http://dx.doi.org/10.1016/0921-4534(94)90053-1
---------- VANCOUVER ----------
Bekeris, V., Ferrari, H., Acha, C., Levy, P., Polla, G., Leyva, G. Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors. Phys C Supercond Appl. 1994;234(1-2):49-56.
http://dx.doi.org/10.1016/0921-4534(94)90053-1