Details

Autor(en) / Beteiligte

• LO CASCIO, D. M. R
• VAN WEES, M. T
• BAKKER, H

Titel

Influence of quenching speed on the superconducting transition temperature of YBa2Cu3O7-δ annealed in air at 650-1200 K

Ist Teil von

• Journal of applied physics, 1992-02, Vol.71 (4), p.1885-1887

Ort / Verlag

Woodbury, NY: American Institute of Physics

Erscheinungsjahr

1992

Quelle

美国小型学会期刊集（AIP Scitation平台）

Beschreibungen/Notizen

• Both single and polycrystalline samples of YBa2Cu3O7−δ were annealed in air at different temperatures between 650 and 1200 K and subsequently quenched at two different speeds: the conventional quench in liquid nitrogen and a high-speed quench (5×104 K/s) using a special device. Both x-ray and ac-susceptibility measurements were used to investigate the influence of quenching speed on the oxygen ordering and Tc. During quenching partial reordering takes place. In the rapidly quenched samples more disorder was frozen in, which corresponds to a lower Tc.