Unprecedented high irreversibility line in the nontoxic cuprate superconductor (Cu,C)Ba₂Ca₃Cu₄O_11+δ.

ABSTRACT: One of the key factors that limit the high-power applications for a type II superconductor is the irreversibility line H _irr(T), which reflects the very boundary of resistive dissipation in the phase diagram of magnetic field versus temperature. In cuprate family, the Y-, Bi-, Hg-, and Tl-based systems have superconducting transition temperatures exceeding the liquid nitrogen boiling temperature (~77 K). However, the toxic elements Hg and Tl in the latter two systems strongly constrain the applications. The best perspective so far is relying on the YBa₂Cu₃O_7-δ (T _c ≈ 90 K) system, which is nontoxic and has a relatively high irreversibility magnetic field. We report the study of a nontoxic superconductor (Cu,C)Ba

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC6162075 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature