{'fraction_non_alphanumeric': 0.022727272727272728, 'fraction_numerical': 0.04971590909090909, 'mean_word_length': 4.3007518796992485, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
High Tc Superconductor Prepared by Oxidization of a Liquid-Quenched Yb1Ba2Cu3 Alloy Foil in Air

An Yb1Ba2Cu3 alloy foil with a nonequilibrium structure including an amorphous phase was prepared by splat-quenching. Heating of the alloy foil in air resulted in the structural change to a crystalline metallic phase at about 490 K, followed by the oxide formation of Yb1Ba2Cu3O6.8 at temperatures above about 540 K. The Yb1Ba2Cu3O6.8 prepared by oxidization of the liquid-quenched alloy foil was found to exhibit high Tc superconductivity with onset at 91 K and zero resistance at 85 K, even though the Jc value at 4.2 K was as low as about 1.9 A/cm2 in the absence of applied field and 0.4 A/cm2 at H=7 T.