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- Title
Superconducting State Properties of CuBa 2 Ca 3 Cu 4 O 10+δ.
- Authors
Lynnyk, Artem; Puzniak, Roman; Shi, Luchuan; Zhao, Jianfa; Jin, Changqing
- Abstract
The superconducting state properties of the CuBa2Ca3Cu4O10+δ (Cu-1234) system, with a transition temperature as high as 117.5 K, were investigated. The ac magnetic susceptibility measurements confirmed a very sharp transition to the superconducting state. The upper critical field, Hc2, as high as 91 T, and the irreversibility field, Hirr, as high as 21 T at 77 K, were determined using dc SQUID magnetization measurements. The intragrain critical current density, jc, estimated from a magnetic hysteresis loop, is as high as 5 × 109 A/m2 in a self-generated magnetic field at 77 K. However, the intergrain critical current density in the studied material is smaller by four orders of magnitude due to very weak intergrain connections.
- Subjects
CUBA; COPPER; MAGNETIC hysteresis; SUPERCONDUCTING transition temperature; SUPERCONDUCTING transitions; MAGNETIC fields; CRITICAL currents; FLUX pinning; HYSTERESIS loop
- Publication
Materials (1996-1944), 2023, Vol 16, Issue 14, p5111
- ISSN
1996-1944
- Publication type
Article
- DOI
10.3390/ma16145111