Low-field anisotropic properties of single crystals of superconducting YBa2Cu3O7−δ

✍ Scribed by J. Hammann; M. Ocio; E. Vincent; A. Bertinotti; D. Luzet; A. Revcolevschi; J. Jegoudez

• Publisher: Elsevier Science
• Year: 1987
• Weight: 281 KB
• Volume: 148
• Category: Article
• ISSN: 0378-4363
• DOI: 10.1016/0378-4363(87)90224-5

✦ Synopsis

Low-field (0.4 G ~< H ~< 3 G) magnetization measurements have been performed on small single crystals of superconducting YBa2Cu30 7 ~ (T c---95 K) using a SQUID magnetometer. They revealed anisotropic properties in the temperature dependences of the shielding and the Meissner effects. A sharp unique transition at 95 K is observed with the field parallel to c. In the perpendicular direction a second transition line seems to be crossed at T*= 84 K. This temperature, T*, decreases slightly as a function of the applied field in the range of fields investigated.