{'fraction_non_alphanumeric': 0.05040871934604905, 'fraction_numerical': 0.025885558583106268, 'mean_word_length': 4.326086956521739, '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}}
Magnetocaloric Effect in the Double Perovskites Sr2RRuO6 (R = Dy and Tb)

We studied the magnetic entropy change (ΔSm) of the double perovskites Sr2RRuO6 (R = Dy and Tb). The magnetic entropy change shows a peak near the second-order phase transition temperature (~40 K). The values of maximum −ΔSm and relative cooling power for a magnetic-field change of 5 T are 2.41 J/(kg K) and 48 J/kg for the DyRu compound and 1.72 J/(kg K) and 36 J/kg for the TbRu compound, respectively. Strong interactions between the rare-earth and transition-metal magnetic moments shift −ΔSm of the rare-earth moments to high temperatures. We compared the results of Sr2RRuO6 (R = Dy and Tb) with those of oxides possessing a giant magnetocaloric effect.