THE MELT PROCESS OF TL-BA(SR)-CA-CU-O TAPE-SHAPED WIRE

被引：8

作者：

OKADA, M ^{[1
]}

YUASA, T ^{[1
]}

MATSUMOTO, T ^{[1
]}

AIHARA, K ^{[1
]}

SEIDO, M ^{[1
]}

MATSUDA, S ^{[1
]}

机构：

[1] HITACHI CABLE LTD,MET RES LAB,TSUCHIURA,IBARAKI 300,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1990年 / 29卷 / 12期

关键词：

SUPERCONDUCTING WIRE; SUPERCONDUCTING TAPE; HIGH-TC SUPERCONDUCTOR; OXIDE SUPERCONDUCTOR;

D O I：

10.1143/JJAP.29.2732

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The melt process effectively improves crystal orientation, and introduces pinning centers in high-T(c) oxide superconductors. It is, however, very difficult to apply the melt process to compounds containing volatile elements such as thallium oxide. In this paper, an extremely high-speed zone-melting process (HIZM) of tape-shaped wire in the Tl-Ba(Sr)-Ca-Cu-O system is presented. The HIZM was successfully performed on the Tl-2223 tape with a little vaporization of thallium. After solidification, the Tl-2223 matrix transformed to the nonequilibrium phase of 2212 with fine CaO and Cu0 particles. A postannealing was undertaken to retransform the nonequilibrium phases to the equilibrium 2223-phase. It would be possible to control the nonequilibrium CaO phase a pinning center during HIZM and subsequent annealing process.

引用

页码：2732 / 2736

页数：5

共 16 条

[1] ORIENTATION DEPENDENCE OF GRAIN-BOUNDARY CRITICAL CURRENTS IN YBA2CU3O7-DELTA BICRYSTALS [J].

DIMOS, D ;

CHAUDHARI, P ;

MANNHART, J ;

LEGOUES, FK .

PHYSICAL REVIEW LETTERS, 1988, 61 (02) :219-222

[2] HIGH-TC SUPERCONDUCTORS - COMPOSITE WIRE FABRICATION [J].

JIN, S ;

SHERWOOD, RC ;

VANDOVER, RB ;

TIEFEL, TH ;

JOHNSON, DW .

APPLIED PHYSICS LETTERS, 1987, 51 (03) :203-204

[3] BROADENING OF THE FLUCTUATION REGION UNDER MAGNETIC-FIELD IN (LA, SR)2CUO4 SINGLE-CRYSTAL [J].

KAMBE, S ;

NAITO, M ;

KITAZAWA, K ;

TANAKA, I ;

KOJIMA, H .

PHYSICA C, 1989, 160 (3-4) :243-248

[4] CRYSTAL-GROWTH AND SUPERCONDUCTIVITY OF TL-CA-BA-CU-O SYSTEM [J].

KOTANI, T ;

KANEKO, T ;

TAKEI, H ;

TADA, K .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1989, 28 (08) :L1378-L1381

[5] A NEW HIGH-TC OXIDE SUPERCONDUCTOR WITHOUT A RARE-EARTH ELEMENT [J].

MAEDA, H ;

TANAKA, Y ;

FUKUTOMI, M ;

ASANO, T .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1988, 27 (02) :L209-L210

[6]

MATSUMOTO T, 1989, 1989 P ISTEC WORKSH, P111

[7]

MURAKAMI M, 1988, ADV SUPERCONDUCTIVIT, P247

[8] NEUTRON-DIFFRACTION STUDY ON PREFERRED ORIENTATION OF AG-SHEATHED Y-BA-CU-O SUPERCONDUCTOR TAPE WITH JC=1000-3000 A/CM2 [J].

OKADA, M ;

OKAYAMA, A ;

MATSUMOTO, T ;

AIHARA, K ;

MATSUDA, S ;

OZAWA, K ;

MORII, Y ;

FUNAHASHI, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1988, 27 (09) :L1715-L1717

[9] AG-SHEATHED TL-BA-CA-CU-O SUPERCONDUCTOR TAPE WITH TC=120-K [J].

OKADA, M ;

NISHIWAKI, R ;

KAMO, T ;

MATSUMOTO, T ;

AIHARA, K ;

MATSUDA, S ;

SEIDO, M .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS, 1988, 27 (12) :L2345-L2347

[10] FABRICATION OF AG-SHEATHED BA-Y-CU OXIDE SUPERCONDUCTOR TAPE [J].

OKADA, M ;

OKAYAMA, A ;

MORIMOTO, T ;

MATSUMOTO, T ;

AIHARA, K ;

MATSUDA, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1988, 27 (02) :L185-L187

← 1 2 →