Anisotropy of the magnetic properties in Bi2Sr2CaCu2Ox single crystal

✍ Scribed by Seiji Hayashi; Kazuyuki Shibutani; Ichiro Shigaki; Rikuo Ogawa; Yoshio Kawate; Vincent Maret; Katsuki Kitahama; Shichio Kawai

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 564 KB
• Volume: 174
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(91)91564-k

✦ Synopsis

Measurements of magnetization versus magnetic field hysteresis for Bi2Sr2CaCu2Ox single crystal were performed in the temperature range from 4.2 to 25 K. Very large critical current density in a-b planes (Jc,ab) of 1.8× 106 A/cm 2 was observed at 4.2 K. The falloff of Jc.ab with applied magnetic field was small at 4.2 K, while Jc.ab decreased rapidly with increasing temperature. As for the anisotropy of this single crystal, we measured M-H hysteresis as a function of the angle between magnetic field and a-b plane. The results support very well Kes' model that Bi-based high-T~ superconductors are composed of two-dimensional superconducting layers separated by normal conducting insertion layers.