Patnaik, S. ; Singh, Kanwaljeet ; Budhani, R. C. (1999) Apparatus for vortex dynamics studies in high Tc samples using close cycle refrigerator and rf oscillators Review of Scientific Instruments, 70 (2). pp. 1494-1500. ISSN 0034-6748
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Official URL: http://rsi.aip.org/rsinak/v70/i2/p1494_s1?isAuthor...
Related URL: http://dx.doi.org/10.1063/1.1149612
Abstract
The design, fabrication, and performance of an apparatus for measurements of rf penetration depth in superconducting samples are described. The instrument makes use of a close-cycle helium refrigerator and is capable of measuring vortex dynamics in superconducting sample of volume as small as 1× 10-3 cm3 with a signal-to-noise ratio of 1400. The system has been tested for a tunnel diode oscillator and an IC 74LS04 oscillator in the 3-5 MHz frequency range. Both magnetic field magnitude and angular variations to the resolution of 1 G and 0.05 °, respectively, are possible with the apparatus. The system performance is evaluated by measuring the dynamical behavior of vortices in platelet samples of Bi2Sr2CaCu2O8 and (Bi-Pb)2Sr2Ca2Cu3O10 superconductors.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Institute of Physics. |
| Keywords: | Penetration Depth (superconductivity); Mixed State; Meissner Effect; Low-temperature Techniques; Magnetic Variables Measurement; Refrigeration; Radiofrequency Oscillators; Tunnel Diode Oscillators; Bismuth Compounds; Strontium Compounds; Calcium Compounds; Lead Compounds; High-temperature Superconductors |
| ID Code: | 5620 |
| Deposited On: | 19 Oct 2010 11:44 |
| Last Modified: | 23 May 2011 07:25 |
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