Ganesan, V. ; Srinivasan, R. ; Aswathy, S. ; Chandrasekaran, K. D. ; Subba Rao, G. V. ; Rajasekaran, T. (1993) Magnetic shielding studies using cylinders of YBa2Cu3O7-x prepared by isostatic compression Solid State Communications, 87 (11). pp. 1081-1085. ISSN 0038-1098
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Related URL: http://dx.doi.org/10.1016/0038-1098(93)90565-5
Abstract
The shielding properties of cylindrical pots of YBa2Cu3O7-x (YBCO) prepared by isostatic compression were measured at 77 K for d.c. magnetic fields as well as a.c. magnetic fields in the range of frequencies from 100 Hz to 5 KHz. The critical penetration field (H*), defined as the value of the applied magnetic field, at which a detectable field was observed inside the cylinder was 16 Gauss for isostatically compressed cylinders. The H* values decreased as a function of frequency of the applied field was increased. The waveform of the field inside the cylinder for a sinusoidal applied field was highly distorted and showed the presence of higher harmonics with appreciale amplitude. The addition of 10% Ag seems to improve shielding at higher fields. The results are compared with that of a shield prepared by uniaxial compression.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 52044 |
| Deposited On: | 02 Aug 2011 08:19 |
| Last Modified: | 02 Aug 2011 08:19 |
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