| Records |
| Author |
Durán, C.; Esquinazi, P.; Luzuriaga, J.; Brandt, E.H. |
| Title |
Bc1 of high-Tc La1.8Sr0.2CuO4 and amorphous Zr70Cu30 superconductors measured by a vibrating reed |
Type |
Journal Article |
| Year |
1987 |
Publication |
Physics Letters A |
Abbreviated Journal |
Phys. Lett. A |
| Volume |
123 |
Issue |
9 |
Pages  |
485-488 |
| Keywords |
Zr70Cu30; ZIRCONIUM COPPER ALLOYS – Amorphous |
| Abstract |
The lower critical field Bc1 of the high-Tc superconductor La1.8Sr0.2CuO4 (Tc=40 K, Bcless-than-or-equals, slant7.7 mT) and of amorphous Zr70Cu30 (Tc=2.6K, Bc1less-than-or-equals, slant3.8 mT) is obtained from the resonance frequency ?/2? of a vibrating reed made of these materials. At applied magnetic fields Ba<Bc1, ?(Ba)=?i(Ba) as predicted for an ideally diamagnetic reed. Above Bc1 we observe a reversible linear law ?2??2inot, vert, similarB2a?B2c1. This allows a simple definition of Bc1 even in ceramic superconductors into which flux starts to penetrate at Bamuch less-thanBc1 due to their granular structure. |
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Edition |
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| ISSN |
0375-9601 |
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| Notes |
ISI:A1987K407100012 |
Approved |
no |
| Call Number |
BT @ hernan @ |
Serial |
269 |
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| Author |
Osquiguil, E.; Frank, V.L.P.; de la Cruz, F. |
| Title |
Two dimensional collective flux pinning in melt spun superconducting amorphous Zr70Cu30 |
Type |
Journal Article |
| Year |
1985 |
Publication |
Solid State Communications |
Abbreviated Journal |
Solid State Commun. |
| Volume |
55 |
Issue |
3 |
Pages |
227-230 |
| Keywords |
ZIRCONIUM COPPER ALLOYS – Amorphous; CRITICAL CURRENTS; PINNING FORCES; SUPERCONDUCTING MATERIALS |
| Abstract |
We have measured the critical currents in melt spun amorphous Zr70Cu30 and their evolution with heat treatment. We found that the pinning forces may be interpreted in terms of the Larkin-Ovchinnikov two dimensional collective pinning theory. |
| Address |
Centro Atómico Bariloche – Instituto Balseiro, Argentina |
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Edition |
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00381098 (ISSN) |
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| Notes |
Cited By (since 1996): 1; Export Date: 17 April 2009; Source: Scopus; CODEN: SSCOA; Language of Original Document: English; Correspondence Address: Osquiguil, E.J.; Centro At |
Approved |
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| Call Number |
BT @ osquigui @ |
Serial |
420 |
| Permanent link to this record |
