Directional solidification of bulk (Y, Sm, Nd)(1)Ba2Cu3O7-x

被引：7

作者：

Boffa, M

DiTrolio, A

Pace, S

Saggese, A

Vecchione, A

Camarota, B

Sparvieri, N

机构：

[1] UNIV SALERNO,DIPARTIMENTO FIS,I-84081 BARONISSI,SA,ITALY

[2] CINS ALENIA DIREZ RIC,I-00131 ROME,ITALY

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1997年 / 7卷 / 02期

关键词：

D O I：

10.1109/77.620931

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 [电气工程]; 0809 [电子科学与技术];

摘要：

Rare Earth (Nd, Sm) elements, having relatively large ionic radius, have been substituted for Yttrium in Y123 superconducting melt textured bulk samples. In (Nd, Sm)123 a wider solidification range and higher recrystallization rate than Y123 significantly increase the solidification rate, making the whole process much faster. A preliminary comparison among directionally solidified (Y, Sm, Nd)(1)Ba2Cu3O7-x bulk bars fabricated by the Horizontal Bridgman method has been done. The different microstructural and superconducting features are studied by X-ray, SEM analysis, and ac and de magnetic measurements. The (Nd, Sm)123 samples, appear comparable to Y123 grown with a pulling rate almost two orders of magnitude lower.

引用

页码：1797 / 1800

页数：4

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