Crystalline Alignment of Tl2Ba2CaCu2O.DELTA. Thin Films Annealed in a Sealed Capsule.
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概要
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C-axis oriented Tl<SUB>2</SUB>Ba<SUB>2</SUB>CaCu<SUB>2</SUB>O<SUB>δ</SUB> thin films have been prepared on MgO with good reproducibility by annealing them in an alumina capsule sealed with a gold gasket. The crystalline alignment of the thin films depends on the annealing temperature, the Tl content of the pellets used for Tl compensation, and the film thickness. The electric properties of the thin films depend on their alignment. The critical temperature T<SUB> c</SUB> of c-axis oriented thin films is above 90 K, whereas that of randomly oriented thin films is below 85 K. The highest T<SUB> c</SUB> is 108 K and the highest critical current density J<SUB> c</SUB> is 4.5× 10<SUP>5</SUP> A/cm<SUP>2</SUP>.
- 公益社団法人 応用物理学会の論文
公益社団法人 応用物理学会 | 論文
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