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Low temperature properties of the YBa2Cu4O8±δ superconducting phase

✍ Scribed by G. Triscone; T. Graf; A. Junod; D. Sanchez; J. Muller

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
380 KB
Volume
165-166
Category
Article
ISSN
0921-4526

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✦ Synopsis

We have carried out extensive magnetic measurements on a high purity YIBa2Cu408±S (124) sample. The large Meissner effect, comparable to that of our best YlBa2Cu307 (1237) samples confirms the bulk nature of the superconductivity. The normal-state susceptibility is clearly lower than in the case of 1237 and increases with T. The specific heat difference C(O,T)-C(H,T) has been deduced from magnetization measurements in the vicinity of T c for ~oH=8T and compared to the direct calorimetric measurement. Both methods indicate that the specific heat jump amounts to approximately 15 mJ/K 2 mole.

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