Measurement of the irreversibility boundary of superconducting YBa2Cu3O7 single crystals
A. Schilling, H. R. Ott, Th. Wolf
DOI 10.1103/PhysRevB.46.14253 · Physical Review B
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Abstract
Results from dc-magnetization M(T) measurements on YBa2Cu3O7 single crystals (with the magnetic field H parallel to the c axis) near the irreversibility boundary in the H-T plane suggest a temperature dependence of the irreversibility boundary H*(T)≊H0*(1-T/Tc)3/2. It is shown that the measurement of M(T,H) at temperatures T below the irreversibility temperature T*(H) is seriously affected by a spatial inhomogeneity of the applied field H, if the sample has to be moved through a detection-coil system. An alternative procedure for the H*(T) detection by dc magnetometry without moving the sample is suggested.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 91.4 | Pressure not reported | unknown |
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