NaNO_3 Effects on the Superconducting Properties of YBa_2Cu_3O_y

概要

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Y-based superconductors were prepared by sintering the mixtures of calcined YBa_2Cu_3O_y powder and NaNO_3. NaNO_3 has been found to have high oxygen potential in a YBa_2C_3O_y superconductor. With this potential, the critical temperature of YBa_2Cu_3O_y+4.5 wt.% NaNO_3 sintered in air was almost the same as that of a pure YBa_2Cu_3O_y sintered in oxygen. NaNO_3 or its decomposition products seemed to induce liquid phase sintering to result in larger grains and denser structure. With these structural changes, the critical current density was found to increase with NaNO_3.
社団法人応用物理学会の論文
1991-06-15