SQUID magnetometer noise measurements on YBa/sub 2/Cu/sub 3/O/sub 7/ thin films and input coils
| Autor: | M. S. DiIorio, K.-Y. Yang, S. Yoshizumi, M. Maung, Jian Zhang |
|---|---|
| Rok vydání: | 1991 |
| Předmět: |
Superconductivity
Squid High-temperature superconductivity Materials science biology Condensed matter physics Magnetometer Noise (electronics) Electronic Optical and Magnetic Materials law.invention Magnetic field law biology.animal Electrical and Electronic Engineering Electric current Current density |
| Zdroj: | IEEE Transactions on Magnetics. 27:2573-2577 |
| ISSN: | 1941-0069 0018-9464 |
| DOI: | 10.1109/20.133741 |
| Popis: | A SQUID magnetometer system incorporating a NB-based conventional SQUID operating at 4.8 K was used to measure the magnetic field noise from high-T/sub c/ input coils and unpatterned films at 77 K. The system allows for the rapid measurement of relatively large regions of high-T/sub c/ material. The results on numerous coils and films show the noise decreasing as a function of increasing film critical current density at 77 K. High-T/sub c/ films with J/sub c/(77 K)=3*10/sup 6/ A/cm/sup 2/ appear suitable for use as input coils in SQUID magnetometer applications requiring low noise at frequencies down to 1 Hz. |
| Databáze: | OpenAIRE |
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