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Autor:
Hong Tang, Y.Z. Wang, Zhong-Run Li, Zong-Quan Yang, G.W. Qiao, De-Chang Zeng, A. Ulyashin, Ling Hua, Cheng Zhang, Y.-U. A. Bumay
Publikováno v:
Physica Status Solidi (a). 156:187-192
The dc field dependencies of the ac susceptibility X'' have been studied in polycrystalline samples of YBa2+xCu3O7-y with x-values ranging from 0 to 0.2. Data on X'' versus T show the expected intergranular coupling peak at the temperature T-p. For a