FABRICATION OF CERAMIC Y1-XCAXBA2CU4O8+DELTA AND YBA2CU3O7 SUPERCONDUCTORS FROM OXALATE PRECURSORS AT AMBIENT PRESSURE

被引：23

作者：

KELLNER, K ^{[1
]}

WANG, XZ ^{[1
]}

GRITZNER, G ^{[1
]}

BAUERLE, D ^{[1
]}

机构：

[1] JOHANNES KEPLER UNIV,INST ANGEW PHYS,A-4040 LINZ,AUSTRIA

来源：

PHYSICA C | 1991年 / 173卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(91)90370-E

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Ceramic Y1-(x)Ca(x)Ba2Cu4O8+delta and YBa2Cu3O7 superconductors were prepared from coprecipitated oxalate precursor material. Calcination and firing at 820-degrees-C under atmospheric oxygen pressure yielded pure phase Ca2+ doped and undoped YBa2Cu4O8+delta superconducting material. The T(co) values increased from 80 to 85 K with an increase in the Ca2+ content from x = 0 to 0.1. YBa2Cu3O7 was obtained after calcination of the oxalates at 860-degrees-C and sintering at 920-degrees-C under ambient oxygen pressure. This superconductor had a T(co) of 92 K with a transition width of 1 K.

引用

页码：208 / 212

页数：5

共 17 条

[11] HIGH-PRESSURE STUDIES ON THE 90 K SUPERCONDUCTORS Y2BA4CU7O15 AND (Y/CA)BA2CU4O8
TALLON, JL
LUSK, J
[J]. PHYSICA C, 1990, 167 (1-2): : 236 - 242
[12] Van de Pauw L.J., 1958, PHILIPS RES REP, V13, P1
[13] SUPERCONDUCTIVITY AT 108-K IN YBA2CU4O8 AT PRESSURES UP TO 12 GPA
VANEENIGE, EN
GRIESSEN, R
WIJNGAARDEN, RJ
KARPINSKI, J
KALDIS, E
RUSIECKI, S
JILEK, E
[J]. PHYSICA C, 1990, 168 (5-6): : 482 - 488
[14] THE OXALATE ROUTE TO SUPERCONDUCTING YBA2CU3O7-X
WANG, XZ
HENRY, M
LIVAGE, J
ROSENMAN, I
[J]. SOLID STATE COMMUNICATIONS, 1987, 64 (06) : 881 - 883
[15] WANG XZ, P ICMC 90 TOPICAL C
[16] PRESSURE EFFECTS ON TC OF SUPERCONDUCTOR YBA2CU4O8
YAMADA, Y
MATSUMOTO, T
KAIEDA, Y
MORI, N
[J]. JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS, 1990, 29 (02): : L250 - L253
[17] STRUCTURE OF (CUO)2 DOUBLE-LAYERS IN SUPERCONDUCTING YBA2CU3O7
ZANDBERGEN, HW
GRONSKY, R
WANG, K
THOMAS, G
[J]. NATURE, 1988, 331 (6157) : 596 - 599

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