Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors

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 superconduc...

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Autor principal: Bekeris, V.
Otros Autores: Ferrari, Hernán Javier, Acha, C., Levy, P., Polla, G., Leyva, G.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1994
Acceso en línea:Registro en Scopus
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Registro en la Biblioteca Digital
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100 1 |a Bekeris, V. 
245 1 0 |a Hysteretical temperature dependence of AC susceptibility in granular high-Tc superconductors 
260 |c 1994 
270 1 0 |m Bekeris, V.; Laboratorio de Bajas Temperaturas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Ciudad Universitaria, Pab. I, (1428) Cap. Fed., Argentina 
504 |a Clem, Granular and superconducting-glass properties of the high-temperature superconductors (1988) Physica C: Superconductivity, 153-155, p. 50 
504 |a Muller, AC susceptibility of high temperature superconductors in a critical state model (1989) Physica C: Superconductivity, 159, p. 717 
504 |a Muller, Ricketts, Macfarlane, Driver, Intergranular flux pinning in high temperature superconductors (1989) Physica C: Superconductivity, 162-164, p. 1177 
504 |a Savvides, Katsaros, Andrikidis, Muller, Temperature, field and frequency dependence of intergranular AC loss in high-temperature superconductors (1992) Physica C: Superconductivity, 197, p. 267 
504 |a Muller, Pauza, Intergranular AC loss in high-temperature superconductors (1989) Physica C: Superconductivity, 161, p. 319 
504 |a Levy, Ferrari, Bekeris, Acha, AC susceptibility and local intergranular magnetic field in high-Tc superconductors (1993) Physica C: Superconductivity, 214, p. 111 
504 |a Kim, Critical Persistent Currents in Hard Superconductors (1962) Physical Review Letters, 9, p. 306 
504 |a Perez, Obradors, Fontcuberta, Vallet, Gonzales-Calvet, Magnetic irreversibility in granular superconductors: AC susceptibility study (1991) Physica C: Superconductivity, 185-189, p. 1843 
504 |a Yang, Beduz, Yi, Scurlock, AC susceptibility of high-Tc superconductors (1992) Physica C: Superconductivity, 201, p. 325 
504 |a Levy, Ferrari, Acha, Bekeris, Irreversibility effects in polycrystalline high-Tc superconductors studied by AC susceptibility (1994) Physica C: Superconductivity, 222, p. 212 
504 |a Evetts, Glowaki, Relation of critical current irreversibility to trapped flux and microstructure in polycrystalline YBa2Cu3O7 (1988) Cryogenics, 28, p. 641 
504 |a Lopez, de la Cruz, Statsny, Leyarovska, Matacotta, Magnetoresistance as a local magnetometer: Lower critical field of ceramic superconductors (1992) Physical Review B, 46, p. 11160 
504 |a Polla, Acha, Duran, Baggio, de Benyacar, Chemical incorporation of halogens in high Tc superconductors: I:Chlorine incorporation in La1.8Sr0.2CuO4 (1990) Solid State Communications, 74, p. 487 
504 |a Civale, (1989) PhD. Thesis, , Instituto Balseiro, San Carlos de Bariloche, Argentina 
504 |a Levy, Acha, Bekeris, Paracoherence in polycrystalline La1.8Sr0.2CuO4−δ (1991) Solid State Communications, 80, p. 849 
506 |2 openaire  |e Política editorial 
520 3 |a 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.  |l eng 
593 |a Laboratorio de Bajas Temperaturas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Ciudad Universitaria, Pab. I, (1428) Cap. Fed., Argentina 
593 |a División Fisica del Sólido, Departamento de Fisica, Comisión Nacional de Energia Atómica, Libertador 8250, (1429) Cap. Fed., Argentina 
690 1 0 |a CALCULATIONS 
690 1 0 |a HIGH TEMPERATURE SUPERCONDUCTORS 
690 1 0 |a HYSTERESIS 
690 1 0 |a MAGNETIC FIELDS 
690 1 0 |a MAGNETIC PERMEABILITY 
690 1 0 |a MAGNETIC VARIABLES MEASUREMENT 
690 1 0 |a SINTERING 
690 1 0 |a THERMAL EFFECTS 
690 1 0 |a AC SUSCEPTIBILITY 
690 1 0 |a EFFECTIVE INTERGRANULAR LOCAL FIELD 
690 1 0 |a FIELD COOLED MATERIAL 
690 1 0 |a FIELD INDEPENDENT INTEGRANULAR CRITICAL STATE PARAMETER 
690 1 0 |a GRANULAR SUPERCONDUCTOR 
690 1 0 |a HYSTERETICAL TEMPERATURE DEPENDENCE 
690 1 0 |a KIMS CRITICAL STATE MODEL 
690 1 0 |a TEMPERATURE DEPENDENT EFFECTIVE PERMEABILITY 
690 1 0 |a ZERO FIELD COOLED MATERIAL 
690 1 0 |a OXIDE SUPERCONDUCTORS 
700 1 |a Ferrari, Hernán Javier 
700 1 |a Acha, C. 
700 1 |a Levy, P. 
700 1 |a Polla, G. 
700 1 |a Leyva, G. 
773 0 |d 1994  |g v. 234  |h pp. 49-56  |k n. 1-2  |p Phys C Supercond Appl  |x 09214534  |w (AR-BaUEN)CENRE-278  |t Physica C: Superconductivity and its applications 
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