AC susceptibility and local intergranular magnetic field in high-Tc superconductors

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AC susceptibility of the granular high-Tc superconductor La1.8Sr0.2CuO4-σ has been measured at 4.5 K as a function of applied DC field HDC a for different AC amplitudes Hm a. Hysteresis related to thermal and magnetic history of the sample was studied and higher screening capabilities in the field-c...

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Detalles Bibliográficos
Autor principal: Levy, P.
Otros Autores: Ferrari, Hernán Javier, Bekeris, V., Acha, C.
Formato: Capítulo de libro
Lenguaje:Inglés
Publicado: 1993
Acceso en línea:Registro en Scopus
DOI
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Registro en la Biblioteca Digital
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central Dr. Luis F. Leloir (FCEN) de Universidad de Buenos Aires
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100 1 |a Levy, P. 
245 1 0 |a AC susceptibility and local intergranular magnetic field in high-Tc superconductors 
260 |c 1993 
270 1 0 |m Levy, P. 
504 |a Lopez, de la Cruz, Anisotropic energy dissipation in high-Tc ceramic superconductors: Local-field effects (1991) Physical Review B, 43, p. 11748 
504 |a McHenry, Maley, Willis, (1989) Phys. Rev. B, 40, p. 2666 
504 |a Evetts, Glowacki, (1988) Cryogenics, 28, p. 641 
504 |a Yang, Beduz, Ashworth, (1990) Cryogenics, 30, p. 618 
504 |a Watanabe, Noto, Morita, Fujimori, Mizuno, Anomine, Ni, Muto, (1989) Cryogenics, 19, p. 263 
504 |a Perez, Obradors, Fontcuberta, Vallet, Gonzales-Calbet, Magnetic irreversibility in granular superconductors: AC susceptibility study (1991) Physica C: Superconductivity, 185-189, p. 1843 
504 |a Yang, Beduz, Yi, Scurlock, (1992) Physica C, 201, p. 325 
504 |a Sen, Mitra, Ghatak, (1992) Supercond. Sci. Technol., 5, p. 467 
504 |a Roy, Kumar, Chaddah, Prasad, Soni, (1992) Physica C, 198, p. 383 
504 |a Müller, AC susceptibility of high temperature superconductors in a critical state model (1989) Physica C: Superconductivity, 159, p. 717 
504 |a Kim, (1962) Phys. Rev. Lett., 9, p. 306 
504 |a Polla, Acha, Duran, Raggio, de Benyacar, (1990) Solid State Commun., 74, p. 487 
504 |a Civale, (1989) Ph D Thesis, , Instituto Balseiro, San Carlos de Bariloche, Argentina 
504 |a Angurel, Lera, Rillo, Navarro, (1993) Cryogenics, 33, p. 416 
506 |2 openaire  |e Política editorial 
520 3 |a AC susceptibility of the granular high-Tc superconductor La1.8Sr0.2CuO4-σ has been measured at 4.5 K as a function of applied DC field HDC a for different AC amplitudes Hm a. Hysteresis related to thermal and magnetic history of the sample was studied and higher screening capabilities in the field-cooled virgin samples compared to the zero-field-cooled virgin samples were observed for all AC amplitudes. For both conditions the real and imaginary susceptibility qualitatively shows the DC and AC dependence predicted by Kim's critical state model. AC losses and enhanced diamagnetic response upon reducing HDC a in a field-cooled condition were studied as a function of Hm a. We have used Kim's intergranular critical state model to evaluate AC susceptibility as a function of HDC a for different Hm a. As the applied field differs from the local field in intergranular regions, we performed an appropriate scaling to describe measured values of AC susceptibility. Through this scaling process the local field at the junctions is determined for different magnetic conditions. © 1993.  |l eng 
536 |a Detalles de la financiación: PID 30332088 
536 |a Detalles de la financiación: We thankG . Polla and G. Leyva at the Labora-torio de Quimica, Divisi6n Fisica del S61ido,f or providings amplesa,n dF. de la Cruz for fruitfuld is-cussions.T his work was partially supportedb y CONICET PID 30332088. 
593 |a División Fisica del Sólido, Departamento de Fisica, Comisión Nacional de Energia Atómica, Libertador 8250 (1429) Cap. Fed., Argentina 
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, Argentina 
690 1 0 |a COOLING 
690 1 0 |a COPPER OXIDES 
690 1 0 |a CRYSTALS 
690 1 0 |a DIAMAGNETISM 
690 1 0 |a GRANULAR MATERIALS 
690 1 0 |a HYSTERESIS 
690 1 0 |a LANTHANUM COMPOUNDS 
690 1 0 |a MAGNETIC FIELD EFFECTS 
690 1 0 |a MAGNETIC PROPERTIES 
690 1 0 |a MATHEMATICAL MODELS 
690 1 0 |a SUPERCONDUCTIVITY 
690 1 0 |a THERMODYNAMIC PROPERTIES 
690 1 0 |a AC SUSCEPTIBILITY 
690 1 0 |a COOLED VIRGIN SAMPLE 
690 1 0 |a DIAMAGNETIC RESPONSE 
690 1 0 |a GRANULAR SUPERCONDUCTORS 
690 1 0 |a INTERGRANULAR MAGNETIC FIELDS 
690 1 0 |a KIM'S CRITICAL STATE MODEL 
690 1 0 |a LANTHANUM STRONTIUM COPPER OXIDES 
690 1 0 |a SCREENING CAPABILITIES 
690 1 0 |a HIGH TEMPERATURE SUPERCONDUCTORS 
700 1 |a Ferrari, Hernán Javier 
700 1 |a Bekeris, V. 
700 1 |a Acha, C. 
773 0 |d 1993  |g v. 214  |h pp. 111-118  |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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856 4 0 |u https://doi.org/10.1016/0921-4534(93)90115-7  |x doi  |y DOI 
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