Navegar

Colección

Datos Estadísticas

Artículo

La versión final de este artículo es de uso interno. El editor solo permite incluir en el repositorio el artículo en su versión post-print. Por favor, si usted la posee enviela a
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

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.

Registro:

Documento: Artículo
Título:AC susceptibility and local intergranular magnetic field in high-Tc superconductors
Autor:Levy, P.; Ferrari, H.; Bekeris, V.; Acha, C.
Filiación:División Fisica del Sólido, Departamento de Fisica, Comisión Nacional de Energia Atómica, Libertador 8250 (1429) Cap. Fed., Argentina
Laboratorio de Bajas Temperaturas, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Buenos Aires, Ciudad Universitaria, Pab. I (1428) Cap. Fed., Argentina, Argentina
Palabras clave:Cooling; Copper oxides; Crystals; Diamagnetism; Granular materials; Hysteresis; Lanthanum compounds; Magnetic field effects; Magnetic properties; Mathematical models; Superconductivity; Thermodynamic properties; AC susceptibility; Cooled virgin sample; Diamagnetic response; Granular superconductors; Intergranular magnetic fields; Kim's critical state model; Lanthanum strontium copper oxides; Screening capabilities; High temperature superconductors
Año:1993
Volumen:214
Número:1-2
Página de inicio:111
Página de fin:118
DOI: http://dx.doi.org/10.1016/0921-4534(93)90115-7
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_v214_n1-2_p111_Levy

Referencias:

  • Lopez, de la Cruz, Anisotropic energy dissipation in high-Tc ceramic superconductors: Local-field effects (1991) Physical Review B, 43, p. 11748
  • McHenry, Maley, Willis, (1989) Phys. Rev. B, 40, p. 2666
  • Evetts, Glowacki, (1988) Cryogenics, 28, p. 641
  • Yang, Beduz, Ashworth, (1990) Cryogenics, 30, p. 618
  • Watanabe, Noto, Morita, Fujimori, Mizuno, Anomine, Ni, Muto, (1989) Cryogenics, 19, p. 263
  • Perez, Obradors, Fontcuberta, Vallet, Gonzales-Calbet, Magnetic irreversibility in granular superconductors: AC susceptibility study (1991) Physica C: Superconductivity, 185-189, p. 1843
  • Yang, Beduz, Yi, Scurlock, (1992) Physica C, 201, p. 325
  • Sen, Mitra, Ghatak, (1992) Supercond. Sci. Technol., 5, p. 467
  • Roy, Kumar, Chaddah, Prasad, Soni, (1992) Physica C, 198, p. 383
  • Müller, AC susceptibility of high temperature superconductors in a critical state model (1989) Physica C: Superconductivity, 159, p. 717
  • Kim, (1962) Phys. Rev. Lett., 9, p. 306
  • Polla, Acha, Duran, Raggio, de Benyacar, (1990) Solid State Commun., 74, p. 487
  • Civale, (1989) Ph D Thesis, , Instituto Balseiro, San Carlos de Bariloche, Argentina
  • Angurel, Lera, Rillo, Navarro, (1993) Cryogenics, 33, p. 416

Citas:

---------- APA ----------
Levy, P., Ferrari, H., Bekeris, V. & Acha, C. (1993) . AC susceptibility and local intergranular magnetic field in high-Tc superconductors. Physica C: Superconductivity and its applications, 214(1-2), 111-118.
http://dx.doi.org/10.1016/0921-4534(93)90115-7
---------- CHICAGO ----------
Levy, P., Ferrari, H., Bekeris, V., Acha, C. "AC susceptibility and local intergranular magnetic field in high-Tc superconductors" . Physica C: Superconductivity and its applications 214, no. 1-2 (1993) : 111-118.
http://dx.doi.org/10.1016/0921-4534(93)90115-7
---------- MLA ----------
Levy, P., Ferrari, H., Bekeris, V., Acha, C. "AC susceptibility and local intergranular magnetic field in high-Tc superconductors" . Physica C: Superconductivity and its applications, vol. 214, no. 1-2, 1993, pp. 111-118.
http://dx.doi.org/10.1016/0921-4534(93)90115-7
---------- VANCOUVER ----------
Levy, P., Ferrari, H., Bekeris, V., Acha, C. AC susceptibility and local intergranular magnetic field in high-Tc superconductors. Phys C Supercond Appl. 1993;214(1-2):111-118.
http://dx.doi.org/10.1016/0921-4534(93)90115-7