Intergranular properties of (Y{sub 1{minus}x{minus}y}Zr{sub x}Ca{sub y})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} compounds
- Babes-Bolyai Univ., Cluj-Napoca (Romania). Faculty of Physics
- Inst. of Molecular and Isotopic Technologies, Cluj-Napoca (Romania)
the integranular properties of (Y{sub 1{minus}x{minus}y}Zr{sub x}Ca{sub y})Ba{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} ceramics were studies by using temperature-dependent ac susceptibility measurements at zero dc magnetic field. The intergranular critical current density was determined from ac susceptibility data by varying the field amplitude H{sub ac}. From the imaginary part of the complex susceptibility, {chi}{double_prime}(T), the authors have determined the temperature dependence of the critical current density by using the Bean`s model. The ac field dependencies of the intergrain {chi}{double_prime}-peak temperatures T{sub p} are linear and agree with Mueller critical state model. The results were analyzed in terms of superconductor-insulator-superconductor (SIS)-and superconductor-normal-superconductor (SNS)-type models for granular superconductors.
- OSTI ID:
- 687488
- Journal Information:
- International Journal of Modern Physics B, Journal Name: International Journal of Modern Physics B Journal Issue: 13 Vol. 13; ISSN IJPBEV; ISSN 0217-9792
- Country of Publication:
- United States
- Language:
- English
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