Anisotropic magnetic relaxation, hysteresis, and Meissner fraction in untwinned single-crystal YBa2Cu3O7−δ produced without applying stress
J. P. Rice, D. M. Ginsberg, M. W. Rabin, K. G. Vandervoort, G. W. Crabtree, H. Claus
DOI 10.1103/PhysRevB.41.6532 · Physical Review B
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Abstract
By quenching the tetragonal phase during crystal growth of YBa2Cu3O7−δ and then oxygenating the crystals without mechanical stress, we obtain some essentially untwinned crystals. Magnetic measurements on such crystals, with fields applied along the a or b axis, show anisotropy. A qualitative analysis of our relaxation and hysteresis data indicates that the critical current density is higher along a than along b (the chain direction). The anisotropic Meissner percent data show that pinning is higher for fields along b than along a.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 90 | Pressure not reported | onset |
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