Clean bulk YBaCuO superconductors doped by paramagnetic ions of Sm and Yb

0476240 - FZÚ 2018 RIV PL eng J - Článek v odborném periodiku
Jirsa, Miloš - Volochová, D. - Kováč, J. - Diko, P.
Clean bulk YBaCuO superconductors doped by paramagnetic ions of Sm and Yb.
Acta Physica Polonica A. Roč. 131, č. 4 (2017), s. 1027-1029. ISSN 0587-4246. E-ISSN 1898-794X
Institucionální podpora: RVO:68378271
Klíčová slova: YBaCuO * bulk superconductors * paramagnetic ions * microstructure * vortex pinning
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 0.857, rok: 2017

The recently developed clean cuprate technology was employed to study the effect of tiny amounts of paramagnetic Yb and Sm ions on electromagnetic properties of bulk YBaCuO. Small samples of about 1.5×1.5×0.5 mm3 were measured by vibrating sample magnetometer in the field range ±9 T and temperatures 30 K to 10 K in the non-superconducting tetragonal state and 300 K to 70 K in the orthorhombic, superconducting state. In the latter case, we observed the reversible paramagnetic moment above TC, similar as in the tetragonal state. Below TC an irreversible magnetic moment was observed from which critical current density, Jc, was evaluated using the extended Bean model.

Trvalý link: http://hdl.handle.net/11104/0272789