Critical state of YBa2Cu3Oy disc in perpendicular fields

✍ Scribed by Y. Mawatari; A. Sawa; H. Obara

• Publisher: Elsevier Science
• Year: 1996
• Tongue: English
• Weight: 638 KB
• Volume: 258
• Category: Article
• ISSN: 0921-4534
• DOI: 10.1016/0921-4534(95)00764-4

✦ Synopsis

We have studied the critical state of a disc shaped YBa2Cu30y film in perpendicular magnetic fields through precise measurements and analyses of magnetization curves. At low temperatures 20 K :s: T:s: 40 K and in low magnetic fields Ba:S: 0.3 T, the magnetization curves of the YBa 2 Cu 3 0 y disc were well described by recent calculations performed by Mikheenko et aI., Zhu et aI. and Clem et al. assuming Bean's critical state model in perpendicular fields. Furthermore, we demonstrated the direct observation of magnetic hysteretic behavior described by the critical state model.