ACTA

Critical Current Density and Microstructure of NdBa₂Cu₃O₇ Single Crystal

P. Diko^a, K. Zmorayová^a, M. Šefčiková^a, V. Antal^a, J. Kováč^a and X. Yao^b
^aInstitute of Experimental Physics, Slovak Academy of Science, Watsonova 47, 040 01 Košice, Slovakia
^bDepartment of Physics, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China

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The top-seeded solution growth method was used to grow NdBCOss single crystals in air. The microstructure of the samples has shown that the oxygenation crack structure developed in the single crystals. The intrinsic critical current density was estimated to be at least twice higher than the value of volume critical current density determined from the magnetization measurements.

DOI: 10.12693/APhysPolA.118.1028
PACS numbers: 74.25.Ha, 74.25.Sv, 74.62.Bf